Influence of denture base material used for palate on mechanical properties of upper complete denture

Denture bases are mainly classified into resin denture base and metal denture base according to the denture base material used. In this paper the influence of these material on the mechanical properties of the upper complete dentures was studied. The test denture bases were acrylic resin denture base, carbon fiber (CF) -cloth reinforced acrylic resin denture base, stainless steel swaged metal base using 4-META adhesive resin and Co-Cr alloy cast metal base. The mechanical properties of these denture bases were evaluated by the uniform-moment bending method, considering the loading in the occlusal situation.The findings are as follows: Co-Cr alloy cast metal and stainless steel swaged metal have high Young's modulous and strength in comparison with those of acrylic resin and CF-cloth reinforced acrylic resin. But, the denture base as a construction had not large difference of the mechanical properties between these four denture base material. Therefore, it would be suggested that the denture base material used for palate had not more influence on the mechanical properties of the upper complete denture.