Orthodontic therapy for the restorative patient. Part I: The biomechanic aspects.

The integration of interspecialty treatment before the restorative and prosthodontic efforts of the dentist can eliminate conditions that have the potential to jeopardize successful completion of the proposed treatment. Adult dentitions that have deteriorated because of neglect, fear, caries, extractions, or trauma can be restored to stability, health, function, and esthetics. In "Part I, The biomechanic aspects," the orthodontic paralleling of proposed abutment teeth displays premolar (buccolingual) and molar (mesiodistal) uprighting procedures that achieve improved force distribution to these teeth. Molar intrusion (occlusoapical) to improve an occlusal plane distribution of adverse forces to the proposed opposing fixed partial denture is discussed. These vexing problems facing successful reintegration of the altered states of occlusal relationships frequently can be answered by the incorporation of preprosthodontic corrections.