Functional Harmony

dr norman function harmony

As the mandible (lower jaw) moves in function, the lower teeth should not collide with the upper teeth. Non-interference alone is not enough, however. Harmony between the teeth and the envelope of function must also conform to rather precise relationships between the teeth and the lip closure path, and the teeth and lips in phonetics. The entire alveolar process (upper and lower jaw that support the teeth) must also conform to a zone of neutral horizontal pressure between the tongue and the perioroal musculature (lips surrounding the entrance to the oral cavity).