Deep Bite

In orthodontics, the most eye-catching “before and after” photos are the severely crowded malocclusions (bad bite) with blocked out cuspids looking more like vampire fangs than human teeth. Most parents will notice the Class II malocclusion with the classic “buck teeth”. Crossbites are routinely diagnosed during dental checkups by dentists and hygienists. Often overlooked, however, is the deep overbite malocclusion. In the absence of crowding, the deep overbite maybe ignored. 

In a deep overbite malocclusion, the upper incisors cover the lower incisors excessively, sometimes completely, when the teeth are brought together to bite.

Unfortunately, deep overbite can be extremely destructive over time.  Typically by middle age, patients with untreated deep over bites have severely worn mandibular incisors (lower front teeth).  Many of these patients are bruxers (teeth grinders), but even in the absence of bruxing, the tooth wear can be devastating. Attempts at restoring the lost tooth structure end in frustration for the dentist and the patient because the restorations are subject to the same forces that ruined the natural teeth. TMJ dysfunction (jaw pain) is also statistically more likely in patients with deep overbites.

Prevention is the best treatment. In growing children, orthodontic treatment with braces or Invisalign can result in a stable occlusion with ideal overbite. One of the keys to a long–lasting result is correction of the angulation of the incisors. Typically, the upper incisors are tipped in with a deep overbite. Treatment may be initiated in younger patients if incisor impingement on the palate is causing pain. When achieved at an early age, however, overbite correction may be difficult to maintain during the loss of the remaining “baby” teeth. In these cases, retreatment may be necessary. Stable overbite correction can usually be achieved in adults as well. 

Each patient must be evaluated individually to consider any other orthodontic problems and to determine the best treatment. As with most orthodontic treatment, a timely evaluation can insure optimal treatment timing and the best possible result. 

Dr. Frank Egan

www.TeethOnTheMove.com