The Effect of Polyester Micro-Particles Powder Addition on Some Mechanical Properties of Light Cured Denture Base Material

Abdalbseet A Fatalla

Polyester powder ； Micro fillers ； light cured acrylic ； mechanical properties

Journal of International Dental and Medical Research

11卷2期（2018 / 07 / 01）

495 - 502

英文

In order to improve the light cured denture base material mechanical and physical properties many studies have been conducted by adding different forms and types of filler with various particles size, the aims of the present study was to improve the mechanical properties of light cured denture base material by adding polyester micro-filler particles Two hundred fifty samples were prepared and subdivided according to the percentage of polyester micro-filler particle powder added (0% (Control), 0.5%, 1%, 1.5%, 2%). The mechanical properties tested were Transverse strength, Impact strength, Tensile strength, Surface hardness and Surface roughness (n=10). XRD, EDS, FTIR spectrum and SEM were used to analyze micro-filler Particles distribution and identification of elements in the matrix. The statistical analysis conducted by running one-way ANOVA Table with LSD to show the least significant differences among the groups at P value＜0.05. The results show that the highest mean values for transverse strength, tensile strength and surface hardness test found in 2% by weight polyester micro-fillers particles while there were no significant difference reached among all groups in both impact strength and surface roughness when compared with the control group, Within the limitation of this study, the addition of 2% polyester micro-fillers to Light cured denture base material led to improvement in transverse and tensile strength significantly while no significant improvement in impact strength, hardness and changed in surface roughness was noticed.