Russ.J.Biomech. 1-2, 84-96, 1997


M.Y. Nyashin¹, V.S. Pechenov¹ and F.G. Rammerstorfer²

¹Department of Theoretical Mechanics,
Perm State Technical University, Perm, Russia
²Institute of Lightweight Structures and Aerospace Engineering,
TU Wien, Vienna, Austria

Abstract - Force dosage of the orthodontic appliance during the dentofacial anomaly treatment is one of the most difficult and actual problems of the orthopaedic stomatology. These forces lead to distributed stresses acting on parodontal tissues, i.e. tooth and its environment. The bone remodelling depending on the force magnitude occurs within the parodont especially within the alveolus.
The purpose of this study is to investigate the stress distributions in the periodontal ligament by means of the finite element method and then to formulate optimal forces which should cause predesigned orthodontic tooth movement and satisfy some biological restraints.