Open bite: why some teeth do not meet

Is the gap at the front or the back?

With an anterior open bite, the front teeth do not meet when the back teeth are together. With a posterior open bite, some back teeth do not meet when the teeth elsewhere are in contact. The American Association of Orthodontists describes both patterns.

Tell your orthodontist if your bite has changed or chewing is difficult. An examination is needed to assess the cause.

Why can an open bite develop?

Tooth positions, jaw relationships, and habits can contribute in different combinations. The National Dental Practice-Based Research Network’s adult open-bite research describes the condition as complex and examines several treatment approaches. Two people with a similar-looking gap may not have the same treatment needs.

Long-lasting thumb, finger, or pacifier sucking is associated with some childhood open bites, but it does not explain every case. The American Academy of Pediatric Dentistry advises assessing a habit’s frequency, duration, and intensity. A useful discussion is about what is happening and how to help, rather than blaming a child or parent.

Tongue position may also be assessed. The AAPD distinguishes resting tongue posture from brief swallowing pressures. Seeing the tongue between the teeth does not establish which factor came first or justify an exercise program chosen online. Any habit support should fit the child’s development and the findings of the examination.

Does a child need treatment right away?

Not necessarily. The AAO recommends a check when an orthodontic problem is noticed, and no later than age seven. The outcome may be observation, early treatment, or planning for later care.

Ask whether the gap relates to a habit, the stage of tooth development, a jaw relationship, or more than one factor. If monitoring is recommended, find out when the next check should be and what changes to report. Our thumb-sucking guide covers supportive ways to address that particular habit without turning every open-bite discussion into a habit diagnosis.

What does closing an open bite involve?

The proposed movements should address the way your teeth contact, not just make the front teeth appear straighter. The AAO lists open bite among problems that clear aligners may treat, while emphasizing that some cases suit braces or a combination of approaches better.

In the adult anterior-open-bite study, treatment groups included aligners, fixed braces, temporary anchorage devices, and jaw surgery. Those are categories of care, not a menu of equivalent choices. Treatment was not randomly assigned, and some groups were small, so the research cannot tell an individual reader which option will work best for them.

Temporary anchorage devices, or TADs, may be discussed in selected plans to assist specific tooth movements. If a skeletal discrepancy cannot be adequately addressed through orthodontics alone, the AAO describes combined orthodontic and jaw-surgery planning. An open-bite label alone does not establish that surgery is necessary.

What should a proposed plan explain?

Ask the team to show you which teeth should contact differently at the end of treatment. Useful follow-up questions include:

• What is the main contributor to the gap in my case?
• Which teeth would move, and why?
• Would a habit or another health concern need separate assessment?
• How would we judge whether the bite is improving?
• What would we reconsider if the planned correction is not progressing?

If surgery is one of the options, read our guide to the orthodontic and surgical assessment. It explains the different roles of the specialists and the questions to bring. A second consultation can be useful for understanding an alternative plan, but the comparison should use your examination and records.

Why discuss retention before treatment starts?

Closing a gap and keeping it closed are separate questions. A National Dental PBRN follow-up study assessed adult anterior-open-bite patients after treatment, including different retainer types and wear regimens. Its follow-up was relatively short, and its results do not promise lifelong stability or establish one retainer as best for everyone.

Ask what retention and follow-up your plan includes, how to recognize a change in tooth contact, and whom to call if your appliance no longer fits. Our retainer-fit guide explains why forcing an old retainer is not a substitute for an assessment.

For patients in Valencia and Santa Clarita, a consultation is a chance to understand both the initial correction and the maintenance plan. Bring the questions that affect your daily life, including biting food, appliance preferences, visits, and cost. Here is what to expect at a first consultation.