抄録
The purpose of this research was to investigate the horizontal dimensional variations in maxillary complete dentures fabricated with Polyethersulfone (PES) using compression molding. Dimensional changes were compared for the three different materials PES, Polysulfone (PSF), and PMMA.
The results were as follows:
1. In the case of the occlusion rim, all three materials displayed horizontal shrinkage both in the anteroposterior and in the left/right directions. PMMA had the largest shrinkage, followed by PSF and PES in that order.
2. In the case of the denture, PSF had the largest horizontal shrinkage in the anteroposterior direction, followed by PES and PMMA in that order. In the left/right direction the shrinkage was largest for PMMA, followed by PES and PSF in that order.
3. PES, like PMMA displayed a uniform shrinkage in the anteroposterior direction, with little difference observed between shrinkage in the anterior and posterior region. However, PES, like PSF, had greater shrinkage in molar region than the anterior region.
