Study of the Life of Partial Removable Denture Manufactured by PMMA Reinforced with Nano TiO₂

Abstract

In this study the effect of adding different weight ratio (0.5, 1, 1.5, 2)% of TiO2 nanoparticles powder extend the life of removable partial dentures made by PMMA was studied.The PMMA has low mechanical properties. Then the life is relatively short. After adding these different weight ratios, it found that the highest ultimate compressive stress was at the weight ratio 1.5% . The chewing force measured using a special sensors F-scan, which represents a mat of micro-sensors.When the value of the chewing pressure was 312 kPa. To measure the life of partial dentures, a special device was manufactured that applied a force that simulated the force generated during chewing . It measured by the f-scan sensor, and the best life of 1.5% TiO2 was added by weight. The lifetime of dentures increased by about 80% after adding 1.5 wt% of TiO2 nanoparticles.