Refining Occlusion with Muscle Balance to Enhance Long-term Orthodontic Stability
Dental News Volume XIX, Number II, June, 2012 by Dr. Derek Mahony The primary objective of orthodontic treatment is the movement of teeth into a more ideal relationship, not only for aesthetic, but also for functional considerations. Another very important objective, often not given enough consideration, is the need to finish the case with the muscles of mastication in equilibrium. If muscle balance is not achieved, an endless procession of retainers, is required for retention. In simple terms, if the occlusal forces in maximum intercuspation are unevenly distributed around the arch, tooth movement will most likely occur. However, today it is possible to precisely measure the relative force of each occlusal contact, the timing of the occlusal contacts and specific muscle contraction levels, all simultaneously. This technological breakthrough represents a new opportunity for orthodontists everywhere. Muscl...