Starting from the premise that the tooth is a structure that may be deformed under stress, the study followed the distribution of stresses at the level of the upper first permanent molar, when using some distalization forces with palatinal, respectively vestibular application point, and evaluated the size and type of dental shifts. The investigation alsoevaluated the efficiency of the various devices of molar distalization, by means of a mathematical pattern and by applying a force with a constantpalatinal magnitude 3N and, subsequently, vestibularly, at the level of the upper first permanent M1, for simulating a real clinical situation. The study applies the method of finite elements for demonstrating the existence of molar tipping, as well as for analyzing the level of coronary/radicular stresses as a function of the application point of the distalization force. The mathematical pattern used in the study, created with SolidWorks2006 and COSMOS X PRESS programs, showed that, when thedistalization force is applied vestibularly, a larger coronary shifting, comparatively with a palatinally-
applied distalization force, is observed.
- finite elements.
- molar distalization
- periodontal stress