We do upper and lower jaw operations to treat dentofacial deformities (Generally after 18 years when bone growth has ceased. It is coordinated with orthodontic treatment.) These are derangements of upper and lower jaw relationship impairing the facial appearance as well as biting.
Occlusion is defined as the way the teeth meet when the lower jaw (mandible) and upper jaw (maxilla) come together. It is how the teeth contact in any type of functional relationship. Normal occlusion is desirable as it allows oral functions to operate properly, provides the best esthetics and is helpful in the prevention of disease. Anytime normal occlusion does not occur in the mouth, it is termed malocclusion. Malocclusion can have an effect on dental diseases, chewing, speech and esthetics (especially facial profile) and other functions of the oral cavity. Malocclusion can occur for a variety of reasons. These include, but are not limited to, heredity, trauma, diseases, and habits (such as thumb sucking). The common system used to classify occlusion is termed Angle’s classification system. Class I (orthognathic) is considered normal occlusion. Class II (retrognathic) and III (prognathic) are considered malocclusion.
