Impact of Severe Overbite on Oral Health and Lip Projection - Dentistry

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Excessive maxillomandibular discrepancy?


Hello, doctor.
I have protruding upper teeth, and my maxilla is also longer, which causes my upper lip to protrude significantly.
However, I don't have any other dental issues, my pronunciation is more standard than average, and my chewing function is not affected.
I would like to ask if this condition, if left uncorrected, could impact my health, and whether the protrusion of my upper lip will worsen over time.
Thank you.

Juzi, 20~29 year old female. Ask Date: 2024/01/26

Dr. Lin Jiayong reply Dentistry


Hello: "There are no other issues with the teeth, the pronunciation is even more standard than that of the average person, and the chewing function is not affected." If there are concerns about aesthetics, it is advisable to consult an orthodontist to assess the severity of the protrusion of the upper jaw.
Having objective data to compare with statistical literature will help predict whether there may be negative impacts on health in the future.

Reply Date: 2024/01/26

More Info


Severe overbite, also known as a deep bite, can significantly impact oral health and facial aesthetics, particularly concerning lip projection. In your case, where you have pronounced protrusion of the upper lip due to an overbite and elongated maxilla, it is essential to understand the potential consequences of leaving this condition uncorrected.

Firstly, while you mention that your speech and chewing functions are not adversely affected, it is crucial to recognize that overbites can lead to various dental issues over time. One of the primary concerns is the increased risk of dental wear. When the upper teeth overlap the lower teeth excessively, it can lead to uneven wear patterns, which may result in tooth sensitivity, fractures, or even the need for restorative dental work in the future. Additionally, the misalignment can cause strain on the jaw muscles and temporomandibular joint (TMJ), potentially leading to discomfort or disorders such as TMJ dysfunction.

Moreover, the aesthetic aspect of a severe overbite can also affect self-esteem and social interactions. The protrusion of the upper lip may become more pronounced over time, especially if the underlying skeletal structure continues to grow or change. This can lead to a more pronounced facial profile, which some individuals may find undesirable. As the upper lip protrudes, it may also affect the balance of facial features, leading to a less harmonious appearance.

From a health perspective, while you may not currently experience issues with your bite, the potential for future complications exists. Over time, the misalignment can lead to changes in the way your teeth fit together, which may result in further dental problems. Additionally, if the overbite is significant, it may lead to difficulties in maintaining proper oral hygiene, as certain areas may be harder to clean effectively, increasing the risk of cavities and gum disease.

If you are considering whether to pursue orthodontic treatment, it is advisable to consult with an orthodontist who can assess your specific situation. They can provide insights into the potential long-term effects of your overbite and discuss the benefits of treatment options, which may include braces or other orthodontic appliances. Correcting an overbite can not only improve dental health but also enhance facial aesthetics and boost confidence.

In conclusion, while you may not currently experience significant issues related to your severe overbite, the potential for future complications exists. The protrusion of your upper lip may become more pronounced over time, and the risk of dental wear and TMJ disorders may increase. It is essential to weigh the benefits of orthodontic treatment against the potential long-term effects of leaving the condition uncorrected. Regular dental check-ups and consultations with specialists can help monitor your oral health and guide you in making informed decisions about your treatment options.

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