Artículos de revistas
Finite element analysis of stress distribution in anchor teeth in surgically assisted rapid palatal expansion
Fecha
2013-09Registro en:
International Journal of Oral and Maxillofacial Surgery, Copenhagen, v. 42, n. 9, p. 1093-1099, Sept. 2013
0901-5027
10.1016/j.ijom.2013.03.024
Autor
Assis, D. S. F. R. de
Xavier, T. A.
Noritomi, P. Y.
Gonçales , Andrea Guedes Barreto
Ferreira Júnior , Osny
Carvalho , Paulo Sergio Perri de
Gonçales , Eduardo Sanches
Institución
Resumen
The treatment of a transverse maxillary deficiency in skeletally mature individuals should include surgically assisted rapid palatal expansion. This study evaluated the distribution of stresses that affect the expander's anchor teeth using finite element analysis when the osteotomy is varied. Five virtual models were built and the surgically assisted rapid palatal expansion was simulated. Results showed tension on the lingual face of the teeth and alveolar bone, and compression on the buccal side of the alveolar bone. The subtotal Le Fort I osteotomy combined with intermaxillary suture osteotomy seemed to reduce the dissipation of tensions. Therefore, subtotal Le Fort I osteotomy without a step in the zygomaticomaxillary buttress, combined with intermaxillary suture osteotomy and pterygomaxillary disjunction may be the osteotomy of choice to reduce tensions on anchor teeth, which tend to move mesiobuccally (premolar) and distobuccally (molar)