Verticalization of molars with double cantilever system: finite element analysis.

Abstract

Molar uprighting has been classified as a clinical challenge since it is a treatment that presents extreme complexity and several undesirable effects. One of these effects is the extrusion of the molar because most of the systems used do not have a correct vertical control. The objective of this study is to determine the forces and effects that cause the application of double cantilever in the molar uprighting since this system has been used clinically in the past to straighten without causing extrusion. This objective will be fulfilled through a study of finite elements that consists in the creation of virtual structures that act exactly like the real object. After performing several simulations, it was verified that the double cantilever has not only the ability to avoid molar extrusion but also to cause an average of 1.29mm of molar intrusion. Also, it was verified that there are large areas of compression and tension in several zones of the molar and the tube.