Dr. Gwen Zhang DMD Orthodontist

540 VFW Pkwy #2, Boston, MA 02132
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Monday7:00am - 6:00pm
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Dr. Zhang is a Summa Cum Laude graduate of Tufts University School of Dental Medicine where she received both her D.M.D. degree and her Certificate in Orthodontics. She ranked number one in her graduating class.

American Board of Orthodontics is the first speciality board in dentistry, only orthodontic specality board recognized by the American Dental Association and sponsored by the American Association of Orthodontists

  • What is orthodontics?Orthodontics is the branch of dentistry that specializes in the diagnosis, prevention and treatment of dental and facial irregularities. The technical term for these problems is 'malocclusion,' which means 'bad bite.' The practice of orthodontics requires professional skill in the design, application and control of corrective appliances, such as braces, to bring teeth, lips and jaws into proper alignment and to achieve facial balance.
  • What is an orthodontist?All orthodontists are dentists, but only about 6 percent of dentists are orthodontists. An orthodontist is a specialist in the diagnosis, prevention and treatment of dental and facial irregularities. Orthodontists must first attend college, and then complete a four-year dental graduate program at a university dental school or other institution accredited by the Commission on Dental Accreditation of the American Dental Association (ADA). They must then successfully complete an additional two- to three-year residency program of advanced education in orthodontics. This residency program must also be accredited by the ADA. Through this training, the orthodontist learns the skills required to manage tooth movement (orthodontics) and guide facial development (dentofacial orthopedics).Only dentists who have successfully completed this advanced specialty education may call themselves orthodontists.
  • What is the American Association of Orthodontists?The American Association of Orthodontists is the national organization of dental specialists who limit their practice to orthodontics and dentofacial orthopedics. Founded in 1900, the AAO is the oldest and largest dental specialty organization in the United States and Canada. To date, the AAO has more than 14,600 members, including more than 2,000 international members from outside North America. This membership consists of approximately 94 percent of all orthodontists who currently practice in the United States.The AAO is dedicated to advancing the art and science of orthodontics and dentofacial orthopedics, improving the health of the public by promoting quality orthodontic care, and supporting the successful practice of orthodontics. All members must meet the specialty educational requirements as defined by the Commission on Dental Education of the American Dental Association.The American Dental Association has recognized that 'specialists are necessary to protect the public, nurture the art and science of dentistry, and improve the quality of care.'
  • The AAO is dedicated to advancing the art and science of orthodontics and dentofacial orthopedics, improving the health of the public by promoting quality orthodontic care, and supporting the successful practice of orthodontics. All members must meet the specialty educational requirements as defined by the Commission on Dental Education of the American Dental Association.

  • At what age can people have orthodontic treatment?Children and adults can both benefit from orthodontics, because healthy teeth can be moved at almost any age. Because monitoring growth and development is crucial to managing some orthodontic problems well, the American Association of Orthodontists recommends that all children have an orthodontic screening no later than age 7. Some orthodontic problems may be easier to correct if treated early. Waiting until all the permanent teeth have come in, or until facial growth is nearly complete, may make correction of some problems more difficult.An orthodontic evaluation at any age is advisable if a parent, family dentist or the patient?s physician has noted a problem.
  • What causes orthodontic problems (malocclusions)Most malocclusions are inherited, but some are acquired. Inherited problems include crowding of teeth, too much space between teeth, extra or missing teeth, and a wide variety of other irregularities of the jaws, teeth and face.Acquired malocclusions can be caused by trauma (accidents), thumb, finger or dummy (pacifier) sucking, airway obstruction by tonsils and adenoids, dental disease or premature loss of primary (baby) or permanent teeth. Whether inherited or acquired, many of these problems affect not only alignment of the teeth but also facial development and appearance as well.
  • Acquired malocclusions can be caused by trauma (accidents), thumb, finger or dummy (pacifier) sucking, airway obstruction by tonsils and adenoids, dental disease or premature loss of primary (baby) or permanent teeth. Whether inherited or acquired, many of these problems affect not only alignment of the teeth but also facial development and appearance as well.

  • What are the most commonly treated orthodontic problems?Crowding: Teeth may be aligned poorly because the dental arch is small and/or the teeth are large. The bone and gums over the roots of extremely crowded teeth may become thin and recede as a result of severe crowding. Impacted teeth (teeth that should have come in, but have not), poor biting relationships and undesirable appearance may all result from crowding.Overjet or protruding upper teeth: Upper front teeth that protrude beyond normal contact with the lower front teeth are prone to injury, often indicate a poor bite of the back teeth (molars), and may indicate an unevenness in jaw growth. Commonly, protruded upper teeth are associated with a lower jaw that is short in proportion to the upper jaw. Thumb and finger sucking habits can also cause a protrusion of the upper incisor teeth.Deep overbite: A deep overbite or deep bite occurs when the lower incisor (front) teeth bite too close or into the gum tissue behind the upper teeth. When the lower front teeth bite into the palate or gum tissue behind the upper front teeth, significant bone damage and discomfort can occur. A deep bite can also contribute to excessive wear of the incisor teeth.Open bite: An open bite results when the upper and lower incisor teeth do not touch when biting down. This open space between the upper and lower front teeth causes all the chewing pressure to be placed on the back teeth. This excessive biting pressure and rubbing together of the back teeth makes chewing less efficient and may contribute to significant tooth wear.Spacing: If teeth are missing or small, or the dental arch is very wide, space between the teeth can occur. The most common complaint from those with excessive space is poor appearance.Crossbite: The most common type of a crossbite is when the upper teeth bite inside the lower teeth (toward the tongue). Crossbites of both back teeth and front teeth are commonly corrected early due to biting and chewing difficulties.Underbite or lower jaw protrusion: About 3 to 5 percent of the population has a lower jaw that is to some degree longer than the upper jaw. This can cause the lower front teeth to protrude ahead of the upper front teeth creating a crossbite. Careful monitoring of jaw growth and tooth development is indicated for these patients.
  • Overjet or protruding upper teeth: Upper front teeth that protrude beyond normal contact with the lower front teeth are prone to injury, often indicate a poor bite of the back teeth (molars), and may indicate an unevenness in jaw growth. Commonly, protruded upper teeth are associated with a lower jaw that is short in proportion to the upper jaw. Thumb and finger sucking habits can also cause a protrusion of the upper incisor teeth.

    Deep overbite: A deep overbite or deep bite occurs when the lower incisor (front) teeth bite too close or into the gum tissue behind the upper teeth. When the lower front teeth bite into the palate or gum tissue behind the upper front teeth, significant bone damage and discomfort can occur. A deep bite can also contribute to excessive wear of the incisor teeth.

    Open bite: An open bite results when the upper and lower incisor teeth do not touch when biting down. This open space between the upper and lower front teeth causes all the chewing pressure to be placed on the back teeth. This excessive biting pressure and rubbing together of the back teeth makes chewing less efficient and may contribute to significant tooth wear.

    Crossbite: The most common type of a crossbite is when the upper teeth bite inside the lower teeth (toward the tongue). Crossbites of both back teeth and front teeth are commonly corrected early due to biting and chewing difficulties.

    Underbite or lower jaw protrusion: About 3 to 5 percent of the population has a lower jaw that is to some degree longer than the upper jaw. This can cause the lower front teeth to protrude ahead of the upper front teeth creating a crossbite. Careful monitoring of jaw growth and tooth development is indicated for these patients.

  • Why is orthodontic treatment important?Crooked and crowded teeth are hard to clean and maintain. This may contribute to conditions that cause not only tooth decay but also eventual gum disease and tooth loss. Other orthodontic problems can contribute to abnormal wear of tooth surfaces, inefficient chewing function, excessive stress on gum tissue and the bone that supports the teeth, or misalignment of the jaw joints, which can result in chronic headaches or pain in the face or neck.When left untreated, many orthodontic problems become worse. Treatment by a specialist to correct the original problem is often less costly than the additional dental care required to treat more serious problems that can develop in later years.The value of an attractive smile should not be underestimated. A pleasing appearance is a vital asset to one?s self-confidence. A person's self-esteem often improves as treatment brings teeth, lips and face into proportion. In this way, orthodontic treatment can benefit social and career success, as well as improve one?s general attitude toward life.
  • When left untreated, many orthodontic problems become worse. Treatment by a specialist to correct the original problem is often less costly than the additional dental care required to treat more serious problems that can develop in later years.

    The value of an attractive smile should not be underestimated. A pleasing appearance is a vital asset to one?s self-confidence. A person's self-esteem often improves as treatment brings teeth, lips and face into proportion. In this way, orthodontic treatment can benefit social and career success, as well as improve one?s general attitude toward life.

  • I recently took my child to an orthodontist for an orthodontic screening. The orthodontist recommended treatment. Should I seek a second opinion?Review the recommended treatment with your family dentist. If you would still like to compare your comfort level with another orthodontic office or simply hear another orthodontist's assessment of your child's problem, arrange for a second opinion. You may have already had more than one orthodontist recommended to you by family, friends, your dentist or the AAO?s referral service. Seeking out a member of the AAO assures that your second opinion is from an educationally qualified orthodontic specialist. You should feel confident in the orthodontist and his or her staff, and trust their ability to provide you the care and lifetime orthodontic value you seek.
  • What does orthodontic treatment cost?The actual cost of treatment depends on several factors, including the severity of the patient?s problem and the treatment approach selected. You will be able to thoroughly discuss fees and payment options before any treatment begins. Most orthodontists offer convenient payment plans to patients. Generally, treatment fees may be paid over the course of active treatment. Arrangements commonly offered in orthodontic offices may include an initial down payment with monthly installments, credit card payment, finance company agreements, and other innovative ways to make treatment affordable. Insurance plans or other employer-sponsored payment programs, such as direct reimbursement plans, may be helpful.Dental schools with graduate orthodontic programs usually offer treatment to a limited number of patients at a reduced cost. The Dental School Listing includes telephone numbers and Web site addresses for dental schools with orthodontic graduate programs.
  • Dental schools with graduate orthodontic programs usually offer treatment to a limited number of patients at a reduced cost. The Dental School Listing includes telephone numbers and Web site addresses for dental schools with orthodontic graduate programs.

  • How long will orthodontic treatment take?In general, active treatment time with orthodontic appliances (braces) ranges from one to three years. Interceptive, or early treatment procedures, may take only a few months. The actual time depends on the growth of the patient?s mouth and face, the cooperation of the patient and the severity of the problem. Mild problems usually require less time, and some individuals respond faster to treatment than others. Use of rubber bands and/or headgear, if prescribed by the orthodontist, contributes to completing treatment as scheduled.While orthodontic treatment requires a time commitment, patients are rewarded with healthy teeth, proper jaw alignment and a beautiful smile that lasts a lifetime. Teeth and jaws in proper alignment look better, work better, contribute to general physical health and can improve self-confidence.
  • While orthodontic treatment requires a time commitment, patients are rewarded with healthy teeth, proper jaw alignment and a beautiful smile that lasts a lifetime. Teeth and jaws in proper alignment look better, work better, contribute to general physical health and can improve self-confidence.

  • What are orthodontic study records?Diagnostic records are made to document the patient?s orthodontic problem and to help determine the best course of treatment. As orthodontic treatment will create many changes, these records are also helpful in determining progress of treatment. Complete diagnostic records typically include a medical/dental history, clinical examination, plaster study models of the teeth, photos of the patient?s face and teeth, a panoramic or other X-rays of all the teeth, a facial profile X-ray, and other appropriate X-rays. This information is used to plan the best course of treatment, help explain the problem, and propose treatment to the patient and/or parents.The profile X-ray, or cephalometric film, shows the facial form, growth pattern, and inclination of the front teeth (if teeth are tipped or tilted), which are essential in planning comprehensive treatment. Panoramic or other dental X-rays are used to locate impacted teeth, missing teeth, and shortened or damaged tooth roots, to determine the amount of bone supporting teeth, and to evaluate position and development of permanent teeth that have not yet come in, among other things. From the necessary records, a custom treatment plan is created for each patient.
  • The profile X-ray, or cephalometric film, shows the facial form, growth pattern, and inclination of the front teeth (if teeth are tipped or tilted), which are essential in planning comprehensive treatment. Panoramic or other dental X-rays are used to locate impacted teeth, missing teeth, and shortened or damaged tooth roots, to determine the amount of bone supporting teeth, and to evaluate position and development of permanent teeth that have not yet come in, among other things. From the necessary records, a custom treatment plan is created for each patient.

  • How is treatment accomplished?Custom-made appliances, or braces, are prescribed and designed by the orthodontist according to the problem being treated. They may be removable or fixed (cemented and/or bonded to the teeth). They may be made of metal, ceramic or plastic. By placing a constant, gentle force in a carefully controlled direction, braces can slowly move teeth through their supporting bone to a new desirable position.Orthopedic appliances, such as headgear, bionator, Herbst and maxillary expansion appliances, use carefully directed forces to guide the growth and development of jaws in children and/or teenagers. For example, an upper jaw expansion appliance can dramatically widen a narrow upper jaw in a matter of months. Over the course of orthodontic treatment, a headgear or Herbst appliance can dramatically reduce the protrusion of upper incisor teeth (the top four front teeth) or retrusion of the lower jaw (a lower jaw that is too far behind the upper jaw), while making upper and lower jaw lengths more compatible.
  • Orthopedic appliances, such as headgear, bionator, Herbst and maxillary expansion appliances, use carefully directed forces to guide the growth and development of jaws in children and/or teenagers. For example, an upper jaw expansion appliance can dramatically widen a narrow upper jaw in a matter of months. Over the course of orthodontic treatment, a headgear or Herbst appliance can dramatically reduce the protrusion of upper incisor teeth (the top four front teeth) or retrusion of the lower jaw (a lower jaw that is too far behind the upper jaw), while making upper and lower jaw lengths more compatible.

  • Are there less noticeable braces?Today 's braces are generally less noticeable than those of the past when a metal band with a bracket (the part of the braces that hold the wire) was placed around each tooth. Now the front teeth typically have only the bracket bonded directly to the tooth, minimizing the 'tin grin.' Brackets can be metal, clear or colored, depending on the patient 's preference. In some cases, brackets may be bonded behind the teeth (lingual braces). Modern wires are also less noticeable than earlier ones. Some of today 's wires are made of 'space age' materials that exert a steady, gentle pressure on the teeth, so that the tooth-moving process may be faster and more comfortable for patients. A type of clear orthodontic wire is currently in an experimental stage.
  • How do braces feel?Most people have some discomfort after their braces are first put on or when adjusted during treatment. After the braces are on, teeth may become sore and may be tender to biting pressures for three to five days. Patients can usually manage this discomfort well with whatever pain medication they might commonly take for a headache. The orthodontist will advise patients and/or their parents what, if any, pain relievers to take. The lips, cheeks and tongue may also become irritated for one to two weeks as they toughen and become accustomed to the surface of the braces. Overall, orthodontic discomfort is short-lived and easily managed.
  • Do teeth with braces need special care?Patients with braces must be careful to avoid hard and sticky foods. They must not chew on pens, pencils or fingernails because chewing on hard things can damage the braces. Damaged braces will almost always cause treatment to take longer, and will require extra trips to the orthodontist?s office.Keeping the teeth and braces clean requires more precision and time, and must be done every day if the teeth and gums are to be healthy during and after orthodontic treatment. Patients who do not keep their teeth clean may require more frequent visits to the dentist for a professional cleaning.The orthodontist and staff will teach patients how to best care for their teeth, gums and braces during treatment. The orthodontist will tell patients (and/or their parents) how often to brush, how often to floss, and, if necessary, suggest other cleaning aids that might help the patient maintain good dental health.
  • Keeping the teeth and braces clean requires more precision and time, and must be done every day if the teeth and gums are to be healthy during and after orthodontic treatment. Patients who do not keep their teeth clean may require more frequent visits to the dentist for a professional cleaning.

    The orthodontist and staff will teach patients how to best care for their teeth, gums and braces during treatment. The orthodontist will tell patients (and/or their parents) how often to brush, how often to floss, and, if necessary, suggest other cleaning aids that might help the patient maintain good dental health.

    To keep teeth and gums healthy, regular visits to the family dentist must continue during orthodontic treatment. Adults who have a history of or concerns about periodontal (gum) disease might also see a periodontist (specialist in treating diseases of the gums and bone) on a regular basis throughout orthodontic treatment.

  • Why should children have a check-up with an orthodontic specialist?By age 7, enough permanent teeth have come in and enough jaw growth has occurred that the dentist or orthodontist can identify current problems, anticipate future problems and alleviate parents' concerns if all seems normal. The first permanent molars and incisors have usually come in by age 7, and crossbites, crowding and developing injury-prone dental protrusions can be evaluated. Any ongoing finger sucking or other oral habits can be assessed at this time also.Some signs or habits that may indicate the need for an early orthodontic examination are: early or late loss of baby teeth, difficulty in chewing or biting, mouth breathing, thumb sucking, finger sucking, crowding, misplaced or blocked out teeth, jaws that shift or make sounds, biting the cheek or roof of the mouth, teeth that meet abnormally or not at all, and jaws and teeth that are out of proportion to the rest of the face.
  • A check-up with an orthodontic specialist no later than age 7 enables the orthodontist to detect and evaluate problems (if any), advise if treatment will be necessary, and determine the best time for that patient to be treated.

  • What are the benefits of early treatment?For those patients who have clear indications for early orthodontic intervention, early treatment presents an opportunity to: guide the growth of the jaw, regulate the width of the upper and lower dental arches (the arch-shaped jaw bone that supports the teeth), guide incoming permanent teeth into desirable positions, lower risk of trauma (accidents) to protruded upper incisors (front teeth), correct harmful oral habits such as thumb- or finger-sucking, reduce or eliminate abnormal swallowing or speech problems, improve personal appearance and self-esteem, potentially simplify and/or shorten treatment time for later corrective orthodontics, reduce likelihood of impacted permanent teeth (teeth that should have come in, but have not), and preserve or gain space for permanent teeth that are coming in.
  • What is a space maintainer?Baby molar teeth, also known as primary molar teeth, hold needed space for permanent teeth that will come in later. When a baby molar tooth is lost, an orthodontic device with a fixed wire is usually put between teeth to hold the space for the permanent tooth, which will come in later.
  • Why do baby teeth sometimes need to be pulled?Pulling baby teeth may be necessary to allow severely crowded permanent teeth to come in at a normal time in a reasonably normal location. If the teeth are severely crowded, it may be clear that some unerupted permanent teeth (usually the canine teeth) will either remain impacted (teeth that should have come in, but have not), or come in to a highly undesirable position. To allow severely crowded teeth to move on their own into much more desirable positions, sequential removal of baby teeth and permanent teeth (usually first premolars) can dramatically improve a severe crowding problem. This sequential extraction of teeth, called serial extraction, is typically followed by comprehensive orthodontic treatment after tooth eruption has improved as much as it can on its own.After all the permanent teeth have come in, the pulling of permanent teeth may be necessary to correct crowding or to make space for necessary tooth movement to correct a bite problem. Proper extraction of teeth during orthodontic treatment should leave the patient with both excellent function and a pleasing look.
  • After all the permanent teeth have come in, the pulling of permanent teeth may be necessary to correct crowding or to make space for necessary tooth movement to correct a bite problem. Proper extraction of teeth during orthodontic treatment should leave the patient with both excellent function and a pleasing look.

  • How can a child's growth affect orthodontic treatment?Orthodontic treatment and a child's growth can complement each other. A common orthodontic problem to treat is protrusion of the upper front teeth ahead of the lower front teeth. Quite often this problem is due to the lower jaw being shorter than the upper jaw. While the upper and lower jaws are still growing, orthodontic appliances can be used to help the growth of the lower jaw catch up to the growth of the upper jaw. Abnormal swallowing may be eliminated. A severe jaw length discrepancy, which can be treated quite well in a growing child, might very well require corrective surgery if left untreated until a period of slow or no jaw growth. Children who may have problems with the width or length of their jaws should be evaluated for treatment no later than age 10 for girls and age 12 for boys. The AAO recommends that all children have an orthodontic screening no later than age 7 as growth-related problems may be identified at this time.
  • What kinds of orthodontic appliances are typically used to correct jaw-growth problems?Correcting jaw-growth problems is done by the process of dentofacial orthopedics. Some of the more common orthopedic appliances used by orthodontists today that help the length of the upper and lower jaws become more compatible include:Headgear: This appliance applies pressure to the upper teeth and upper jaw to guide the rate and direction of upper jaw growth and upper tooth eruption. The headgear may be removed by the patient and is usually worn 10 to 12 hours per day.Herbst: The Herbst appliance is usually fixed to the upper and lower molar teeth and may not be removed by the patient. By holding the lower jaw forward and influencing jaw growth and tooth positions, the Herbst appliance can help correct severe protrusion of the upper teeth.Bionator: This removable appliance holds the lower jaw forward and guides eruption of the teeth into a more desirable bite while helping the upper and lower jaws to grow in proportion with each other. Patient compliance in wearing this appliance is essential for successful improvement.Palatal Expansion Appliance: A child's upper jaw may also be too narrow for the upper teeth to fit properly with the lower teeth (a crossbite). When this occurs, a palatal expansion appliance can be fixed to the upper back teeth. This appliance can markedly expand the width of the upper jaw.The decision about when and which of these or other appliances to use for orthopedic correction is based on each individual patient's problem. Usually one of several appliances can be used effectively to treat a given problem. Patient cooperation and the experience of the treating orthodontist are critical elements in success of dentofacial orthopedic treatment.
  • Headgear: This appliance applies pressure to the upper teeth and upper jaw to guide the rate and direction of upper jaw growth and upper tooth eruption. The headgear may be removed by the patient and is usually worn 10 to 12 hours per day.

    Herbst: The Herbst appliance is usually fixed to the upper and lower molar teeth and may not be removed by the patient. By holding the lower jaw forward and influencing jaw growth and tooth positions, the Herbst appliance can help correct severe protrusion of the upper teeth.

    Bionator: This removable appliance holds the lower jaw forward and guides eruption of the teeth into a more desirable bite while helping the upper and lower jaws to grow in proportion with each other. Patient compliance in wearing this appliance is essential for successful improvement.

    Palatal Expansion Appliance: A child's upper jaw may also be too narrow for the upper teeth to fit properly with the lower teeth (a crossbite). When this occurs, a palatal expansion appliance can be fixed to the upper back teeth. This appliance can markedly expand the width of the upper jaw.

    The decision about when and which of these or other appliances to use for orthopedic correction is based on each individual patient's problem. Usually one of several appliances can be used effectively to treat a given problem. Patient cooperation and the experience of the treating orthodontist are critical elements in success of dentofacial orthopedic treatment.

  • I've just heard about the Herbst appliance. How could it help my son who has an underdeveloped lower jaw?For patients who have an underdeveloped lower jaw, it is important to begin orthodontic treatment several years before the lower jaw ceases to grow. One method of correcting an underdeveloped jaw uses an orthodontic appliance that repositions the lower jaw. These appliances influence the jaw muscles to work in a way that may improve forward development of the lower jaw. There are many appliances used by orthodontists today to treat underdeveloped lower jaws - such as the Frankel, headgears, Activator, Twin Block, bionator and Herbst appliances. Some are fixed (cemented to the teeth) and some are removable. You and your orthodontist can discuss which appliance is best for your child.
  • Will my braces interfere with playing musical instruments?Playing wind or brass instruments, such as the trumpet, will clearly require some adaptation to braces. With practice and a period of adjustment, braces typically do not interfere with the playing of musical instruments.
  • Why does orthodontic treatment time sometimes last longer than anticipated?Estimates of treatment time can only be that - estimates. Patients grow at different rates and will respond in their own ways to orthodontic treatment. The orthodontist has specific treatment goals in mind, and will usually continue treatment until these goals are achieved. Patient cooperation, however, is the single best predictor of staying on time with treatment. Patients who cooperate by wearing rubber bands, headgear or other needed appliances as directed, while taking care not to damage appliances, will most often lead to on-time and excellent treatment results.
  • Why are retainers needed after orthodontic treatment?After braces are removed, the teeth can shift out of position if they are not stabilized. Retainers provide that stabilization. They are designed to hold teeth in their corrected, ideal positions until the bones and gums adapt to the treatment changes. Wearing retainers exactly as instructed is the best insurance that the treatment improvements last for a lifetime.
  • Will my child's tooth alignment change later?Studies have shown that as people age, their teeth may shift. This variable pattern of gradual shifting, called maturational change, probably slows down after the early 20s, but still continues to a degree throughout life for most people. Even children whose teeth developed into ideal alignment and bite without treatment may develop orthodontic problems as adults. The most common maturational change is crowding of the lower incisor (front) teeth. Wearing retainers as instructed after orthodontic treatment will stabilize the correction. Beyond the period of full-time retainer wear, nighttime retainer wear can prevent maturational shifting of the teeth.
  • More than 5 million people in the United States and Canada are in the care of an orthodontist and looking forward to a beautiful, healthy smile that's good for life. The obvious potential reward is straighter teeth that are less prone to decay and injury. But just as important is the boost to self-confidence that a better smile can provide.

    Why is orthodontics important?Orthodontics can boost a person's self-image as the teeth, jaws and lips become properly aligned, but an attractive smile is just one of the benefits. Alleviating or preventing physical health problems is just as important.

    Without treatment, orthodontic problems may lead to tooth decay, gum disease, bone destruction and chewing and digestive difficulties. A 'bad bite' can contribute to speech impairments, tooth loss, chipped teeth and other dental injuries.

    Some orthodontic problems are easier to correct if detected early rather than waiting until jaw growth has slowed. Early treatment mayhelp a patientavoid surgery or other serious corrections later in life.

    Is it ever too late for a person to get braces?No. Because healthy teeth can be moved at any age, an orthodontist can improve the smile of practically anyone-in fact, orthodontists regularly treat patients in their 50s, 60s and older!

    What makes an orthodontist different from a dentist?Orthodontists are the dental specialists who correct dental and facial irregularities, day in and day out. An orthodontist is expert at moving teeth, helping jaws develop properly and working with the patient to help make sure the teeth stay in their new positions.

    AAO member orthodontistsare uniquely qualified to correctimproperly aligned teeth and jaws.The American Dental Association requires orthodontists to have at least two years of post-doctoral, advanced specialty training in orthodontics in an accredited program, after graduation from college and then dental school.Only those who have completed this rigorous training may be called orthodontists.

    What about costs?This will vary, of course, depending on the nature of the problem. Many orthodontic problems require only limited treatment. You may be surprised to discover that orthodontics is less expensive than you thought.

    Your orthodontist will be happy to discuss fees. He or she may offer payment plans to help meet individual financial needs. In addition, many dental insurance plans now include orthodontic benefits. Of course, it's important to keep in mind the lifetime value that orthodontics provides.

    Should I ask to talk to present and/or former patients?It is wise for a consumer to investigate the value of any product or service. Most orthodontic patients will give it to you straight - orthodontics is one of the best investments they've ever made. Better oral health and better self-esteemare benefits that can last a lifetime.

    Who can recommend an orthodontist?Visit the online orthodontist locator service or ask your family dentist to recommend an orthodontist. Or write the American Association of Orthodontists at 401 N. Lindbergh Blvd., St. Louis, MO 63141-7816.

    Age 7?A Year to RememberAn orthodontist evaluated Jennifer 's severe protrusion when she was 7 years old (first photo). The orthodontist started treatment using techniques to reduce the protrusion and improve the way her lips met. The result was a better environment for her emerging permanent teeth.Later, when Jennifer 's remaining permanent teeth came in, she wore braces to align her teeth and complete the treatment started earlier (second photo). In the interim she had improved function and appearance. Jennifer 's case illustrates why the American Association of Orthodontists (AAO) recommends that all children get an orthodontic check-up no later than age 7. An early visit allows the orthodontist to inform parents whether orthodontic treatment may be required. If treatment is needed, the orthodontist can then advise the family on the appropriate time for the child to begin treatment.'An early orthodontic evaluation can ease a parent 'sconcerns about crooked teeth or facial development andabout orthodontic treatment. Some conditions are best treated early for biological, social or practical reasons, whereas others should be deferred,' according to Dr. James J. Caveney of Wheeling, West Virginia, president of the AAO. In the realization that patients differ in both physiological development and treatment needs, our goal is to provide each patient with the most appropriate treatment at the most appropriate time.?

    Dr. Gwen Zhang DMD Orthodontist - Orthodontist in West Roxbury, MADr. Gwen Zhang DMD Orthodontist - Orthodontist in West Roxbury, MA

    The American Association of Orthodontists (AAO) recommends that all children geta check-up with an orthodontic specialistno later than age 7. An early check-up may tell parents whether a problem is developing. If a problem is apparent, the orthodontist can advise parents if the problem is better treated at a younger age, orat a later time whenmore permanent teeth are in place. If no problem is apparent, the early check-up provides parents with the peace of mind that there are no immediate treatment needs.

    Because orthodontists can spot subtle problems with jaw growth or teeth while a child still has primary, or 'baby,' teeth present, the American Association of Orthodontists (AAO) recommends all children get a check-up with an orthodontic specialist no later than age 7. Some problems are not so subtle, and may be noticed by parents. To help educate parents about potential orthodontic problems, the American Association of Orthodontists has gathered examples in a short educational guide, Problems to Watch for in Growing Children. Problems identified early permit the orthodontist to recommend the appropriate treatment at the appropriate time for the individual patient

  • The clinical examination with Dr. Garrett discloses visual findings, and is a venue for open-discussion and our treatment recommendation. The treatment coordinator is able to facilitate any communication required.
  • Diagnostic records are needed for detailed treatment planning and disclosure. This includes orthodontic models and specific x-rays of teeth, facial bones, jaws and TMJ (temporomandibular joints) for each individual case. The information is required for study and treatment planning.
  • We hope this gives you an overview of what to expect on your first few visits. After the initial exam you will be on your way to a new smile and healthy bite. We will have the opportunity to know each other over the course of your treatment and look forward to ensuring the time you spend with us is enjoyable and meets your expectations
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    Yi Cao
    2 years ago
    [updated as of 2022/06/05] I switched to a new orthodontist in January this year and now my teeth is 100X better than what it looks before, so now I'm able to confirm it is all Dr Zhang's fault and what I regretted most in my entire life is not switch to a different doctor earlier. [my previous review]I started the treatment with her ~2 years ago with 100% trust as she was highly recommended by my general dentist. However Dr Zhang has done a terrible job to my teeth, although I'm not eligible to judge her skills (she has a good academia background and may have done some good cases over the past years), what I can tell with 100% confidence is that Dr Zhang is not responsible at all and has been lying to me throughout the process. At the beginning of the treatment, Dr Zhang asked me to only bite on the right side (because on the left side she needs to straighten up one teeth). After months of biting only on one side, I developed TMJ on the right and my bite became terrible and Dr Zhang was not able to fix it after months. I completely understand that things may not go as expected but the way Dr Zhang deals with it make me question her ethics/moral of being a doctor: 1. Dr Zhang was not aware of my bite problem until I pointed out. My teeth became more and more tilted but I did not ask in the beginning as I thought it is just in the process. But after months it was not getting any better, so I asked and then I realized she was not aware of it at all. Why am I so certain? Because before I pointed out every appointment took no longer than 10 minutes and after it took ~1 hour and she clearly put more thoughts in how to bring the teeth back. 2. After several months of fixing, my teeth was not getting much better and Dr Zhang started to blame me not following her instructions and told me I would need a surgery if I do not follow her. The fact is that I'm always following her instructions. I think she is blaming me for the mistakes she has made. This really ruined all my trust for her. Let me tell you how much trust I have for her at the beginning, I started my treatment in Boston and moved to west coast for a job change after several months treatment with Dr Zhang. I asked her if I need to transfer the case. She told me no need and I could visit her every 3 months and still finish my treatment in 2 years. Since then I took 6 hours red eye flight every 3 months, visited her in the morning and then took the same 6 hour flight back to west coast. Today I blame myself for blindly following whatever she said during the treatment. 3. Dr Zhang kept saying good words about her work and kept lying to me again and again. After 2 years of treatment, my teeth look terrible and she told me she was happy about my progress and I was able to take the braces off within 6 months, which is clearly not true. All other orthotists said my case has at least 1.5 years to go. My teeth was crowded before treatment and now it is aligned. Dr Zhang kept telling me she has spent so much efforts and has done a great job in aligning my teeth and now she is fixing my bite. This is 100% lie as aligning the teeth is the easiest part and the tricky part is to have a good bite ( this is also what she told me accidentally and I confirmed from other orthodontists). What's the point of having aligned teeth and not able to eat anything?


    Irene Wu
    2 years ago
    I don't recommend this office and this is my first Google review. The office is poor managed, scheduling is often missed or have to wait over one hour in office. Most of all, it is the attitude of doctor, she is neither caring nor professional, and will blames all mistakes on the patient .Even though she delayed the treatment for 2 months but no tentative apologies. It seems all okay in the beginning, but the service just went downhill afterward. I am not sure what is the motive to accept new patient but not to continue to serve them well. Hopefully it is not just for money. If you want to finish the procedures well, I will recommend to look for another orthodontist.


    marquez berrianvalle
    2 years ago
    Brought my child to the Sudbury, MA location and was dissatisfied with the treatment plan. My child already had braces on for a year when we moved. The cost for treatment was going to be very expensive. It was more than what we were quoted at our previous orthodontist by a thousand dollars. They did not take our previous xrays and charged $500 for new set. We ended up not going with Dr. Zhang due to the high cost. She also wanted to perform extractions, but our previous and current orthodontists have never recommended such actions


    Gloria Hu
    2 years ago
    Really bad experience there. I need spend more money and time to correct what she had done. So please don't waste your time and money there.


    M A
    2 years ago
    This is the first bad review I have left for anyone. Do not entrust your children to Dr. Zhang! She promoted herself as treating tough cases with patients from out of state coming to see her. During mid treatment Dr. Zhang over expands my child's arch which developed into a scissor bite when she didn't have one to begin. Dr. Zhang did not even attempt to correct it until after I pointed it out to her after months of being like that. We should have switched orthodontists then, but we continued. It took her months to correct which delayed treatment time. After covid lockdown and supposedly on our way to completing treatment, Dr. Zhang makes overcorrections again making the bottom incisors crooked when they were straight for many months and then she couldn't move them back into place. After 4 months without change, I get fed up and ask her what is taking so long as we are already at 3 years when treatment time was estimated at 24 months. She had the nerve to ask me why I question her work. She then suddenly decides my child is ready to de-bond with crooked teeth, but she said bite is perfect. I received 2nd opinions from other orthodontists, and they all said her bite was still class 2 and would take more months to correct!! Not only is she incompetent but a liar. My child also developed gum recession from all the adjustments and will eventually need gum graft according to my periodontist! Furthermore, when I decided to leave her practice I asked for a refund for the retainer and de-bondment and she said retainer was complimentary and not part of my contract when in fact it was clearly stated in contract. Dr. Zhang has no communication skills. She dismisses any concerns you have, and never updates you on progress. She told me my child was a difficult case after I decided to leave her practice and never mentioned anything the past 3 years. Every time I would have any concerns her answer was I worry too much. I am furious that I put up with her for 3 years and now I have to spend more time and money to correct. I also have to worry about any long-term effects of being in braces for so long. Do yourself a favor and go to any other orthodontist but this one.


    Stuart Urie
    2 years ago
    Dr. Zhang did braces for me almost 20 years ago. My front retainer is still in place and nothing has moved! Her attention to detail is second to none. I can't thank her enough!


    Ruiwen Sun
    2 years ago
    Dr. Zhang is one of the best orthodontists in MA. About two years ago, my TMJ disorder (TMD) got extremely severe and was strongly recommended by my general dentist for specialized treatment. Quite unfortunately, after the specialized TMD treatment, I ended up with severe posterior open bite and lost my ability to chew. So the only option for me was to adjust my bite. Not many orthodontists can deal with my situation due to the complexity of my case. I didn't understand their evaluations but I was under the impression that my orthodontic treatment was like repairing tires on a moving vehicle. Luckily, I found Dr. Zhang. At the beginning, I was very concerned that my jaw may lock again at any time during the orthodontic treatment and amazingly this had never happened. After about 10 months of treatment, my bite becomes much more comfortable and I can chew appropriately. Though I still have to continue my treatment for about another year, I can confidently say now that Dr. Zhang has done an excellent job in my case.


    M A
    3 years ago
    This is the first bad review I have left for anyone. Do not entrust your children to Dr. Zhang! She promoted herself as treating tough cases with patients from out of state coming to see her. During mid treatment Dr. Zhang over expands my child's arch which developed into a scissor bite when she didn't have one to begin. Dr. Zhang did not even attempt to correct it until after I pointed it out to her after months of being like that. We should have switched orthodontists then, but we continued. It took her months to correct which delayed treatment time. After covid lockdown and supposedly on our way to completing treatment, Dr. Zhang makes overcorrections again making the bottom incisors crooked when they were straight for many months and then she couldn't move them back into place. After 4 months without change, I get fed up and ask her what is taking so long as we are already at 3 years when treatment time was estimated at 24 months. She had the nerve to ask me why I question her work. She then suddenly decides my child is ready to de-bond with crooked teeth, but she said bite is perfect. I received 2nd opinions from other orthodontists, and they all said her bite was still class 2 and would take more months to correct!! Not only is she incompetent but a liar. My child also developed gum recession from all the adjustments and will eventually need gum graft according to my periodontist! Furthermore, when I decided to leave her practice I asked for a refund for the retainer and de-bondment and she said retainer was complimentary and not part of my contract when in fact it was clearly stated in contract. Dr. Zhang has no communication skills. She dismisses any concerns you have, and never updates you on progress. She told me my child was a difficult case after I decided to leave her practice and never mentioned anything the past 3 years. Every time I would have any concerns her answer was I worry too much. I am furious that I put up with her for 3 years and now I have to spend more time and money to correct. I also have to worry about any long-term effects of being in braces for so long. Do yourself a favor and go to any other orthodontist but this one.


    Stuart Urie
    3 years ago
    Dr. Zhang did braces for me almost 20 years ago. My front retainer is still in place and nothing has moved! Her attention to detail is second to none. I can't thank her enough!


    Gloria Hu
    3 years ago
    Really bad experience there. I need spend more money and time to correct what she had done. So please don't waste your time and money there.


    Christina Yating Bai
    3 years ago
    Dr.Zhang is the one of the best orthodontists in town! My case is VERY complicated! I've consulted at least 5 orthodontists in Boston and no one can give me a firm answer if they can do my case, or just told me that I have to wear braces for 3 years! I found dr. Zhang by a reference from my friend, he came out with an amazing result. Then I decided to work with her. I'm wearing braces now less than a year, the result is soooo amazing!!!! It's a team work with you and your orthodontist, you have to 100% follow her instructions. And do not try to challenge her because she knows teeth better than you! And that's true you have to a wait for a while in every appointment, she is very very nice and very busy since she has a lot patients. Once your case came out with a great result I really don't care if I wait a little bit:)


    Bai Yating
    4 years ago
    Dr.Zhang is the one of the best orthodontists in town! My case is VERY complicated! I've consulted at least 5 orthodontists in Boston and no one can give me a firm answer if they can do my case, or just told me that I have to wear braces for 3 years! I found dr. Zhang by a reference from my friend, he came out with an amazing result. Then I decided to work with her. I'm wearing braces now less than a year, the result is soooo amazing!!!! It's a team work with you and your orthodontist, you have to 100% follow her instructions. And do not try to challenge her because she knows teeth better than you! And that's true you have to a wait for a while in every appointment, she is very very nice and very busy since she has a lot patients. Once your case came out with a great result I really don't care if I wait a little bit:)


    Jianhua Huang
    4 years ago
    My daughter has had outstanding care over the past two years from Dr. Zhang and her staffs and has seen fantastic results, despite her difficult orthodontic case. When I look at her teeth, I am still amazed at the transformation to her teeth. Dr. Zhang is very responsive, professional and fantastic with kids. She has always been available, accommodating when appointments needed to be changed. She has been very diligent with getting her teeth corrected and has managed to do so even in a small amount of time. I trust her so much to have my two kids orthodontia done with her. In addition, the office environment is a wonderful, professional, efficient and friendly. The staffs we met personally or talked to over the phone have been incredibly helpful, attentive and upbeat. I would definitely recommend her to my friends.


    Jianhua Huang
    5 years ago
    My daughter has had outstanding care over the past two years from Dr. Zhang and her staffs and has seen fantastic results, despite her difficult orthodontic case. When I look at her teeth, I am still amazed at the transformation to her teeth. Dr. Zhang is very responsive, professional and fantastic with kids. She has always been available, accommodating when appointments needed to be changed. She has been very diligent with getting her teeth corrected and has managed to do so even in a small amount of time. I trust her so much to have my two kids orthodontia done with her. In addition, the office environment is a wonderful, professional, efficient and friendly. The staffs we met personally or talked to over the phone have been incredibly helpful, attentive and upbeat. I would definitely recommend her to my friends.


    grant hou
    5 years ago
    Been my orthodontist for many years and have always been satisfied with the service I've received. Dr. Zhang is very professional and caring and always recommends the best treatment for me. Would recommend to anyone looking for a perfect smile.


    Maryanna Monay
    5 years ago
    Horrible! Teeth look as if I never had braces. I believe all the good comments here are fake or from her staff. She doesn't know what she is doing. If you want to waste your money and do through trauma, this so called orthodontist is the one.


    Lejla Less
    5 years ago
    Worst orthodontist I hope to ever come across! She ruined my teeth, lowered my gums to the bone and told me to go somewhere else because she does not know how to fix my situation that she caused. She has no clue what she is doing. Is really rude and only works for the money. Please do yourself a favor and not go through with what I had to endure.


    Lingya Z
    5 years ago
    My family and I have been going to Dr. Zhang's for many years. Dr. Zhang works very hard and her treatment helped solve my headache issues. She listens to all of my issues and complaints and takes them to heart to help me find a solution. She's also very reachable and answers very quickly to all of my calls. I have already recommended Dr. Zhang to all my friends.


    Anthony Vinson
    5 years ago
    Great work my teeth looks great I really enjoyed going to see Dr Zang!


    Lea hachem
    5 years ago
    This place has the worst service ever. They have confused my appointments and the wait time is ridiculous. The average wait time is about 30 minutes and that's just to get your name called. There's about 20-30 minutes sitting in a chair for them to finally get to you. The longest I had to wait was an hour and a half. I have had times where they called my name AFTER people with later scheduled appointments. If I could rate this place a zero I would. I don't know how this place is regarding money, but as a patient I'd say you might actually have a better experience getting braces done by an unlicensed orthodontist working in their basement.


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