Effect of particle size distribution of dental poly (methyl methacrylate) beads on the microstructure of denture.
- Author:
Bin YANG
1
;
Tong WANG
;
Heng-chang XU
Author Information
- Publication Type:Journal Article
- MeSH: Dental Materials; chemistry; Dentures; Particle Size; Polymethyl Methacrylate; chemistry
- From: Chinese Journal of Stomatology 2003;38(3):203-205
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVESTo investigate the effect of particle size distribution (PSD) of dental poly (methyl methacrylate) (PMMA) beads on the microstructure of denture.
METHODSIt was compared and analyzed that the porosity of three groups of spherical specimens which were made of PMMA beads with different PSD at proper polymer/monomer ratios. And the final microstructure of each group was investigated using Digital High Definition Microscope.
RESULTSWith proper polymer/monomer ratio increasing, the occurrence of porosity tended to decrease. The final microstructure of denture varied with PSD of PMMA beads.
CONCLUSIONBy means of optimizing PSD of beads, the microstructure of denture could be improved, and the occurrence of porosity could be reduced.
