Prediction of strain distribution in maxillary sinus membrane during upper jaw implant surgery

Abstract

This research studied the mechanical property and behavior of maxillary sinus membrane experimentally and numerically, in order to discuss about its breakage when elevated during sinus lift surgery for dental implant in upper jaw bone. An experimental apparatus for sinus membrane of fresh cadaver was developed, and the relation between load and elevation height was obtained. In the numerical analysis by finite element method, both geometrical nonlinearity and material nonlinearity were considered by means of Mooney-Rivlin model. This paper describes the outline of the testing machine, experimental results and strain distribution at elevation height of 0.8 mm. High tensile strains were observed in both radial and circumferential directions.