The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
권호 표지

DIMENSIONAL STABILITY AND SURFACE MORPHOLOGY OF VARIOUS DENTURE RESINS

의치상 레진의 중합 방법에 따른 크기의 안정성 및 표면 형태에 관한 연구

  • Chae Sook-Young (Department of Prosthodontics, College of Dentistry, Chonnam National University) ;
  • Vang Mong-Sook (Department of Prosthodontics, College of Dentistry, Chonnam National University)
  • 채숙영 (전남대학교 치과대학 보철학교실) ;
  • 방몽숙 (전남대학교 치과대학 보철학교실)
  • Published : 1992.10.01
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Abstract

The purpose of this study was to investigate the dimensional changes and surface morphology of dentures processed by various polymerization conditions. The measurements were done by taking radiograph and using vernier calipers and each specimen was observed on scanning electron microscope. Results obtained were as follows. 1. The difference of dimensional stability was not recognized between various polymerization conditions(heat-cured resin, pour-type resin, microwave-cured resin, and injection molding resin). 2. There were expansion and shrinkage in the occlusal dimension, shrinkage in the frontal dimension, and expansion in the lateral dimension. 3. Scanning electron microscope pictures of heat-cured resin showed dense and regular surface morphology. 4. Microwave-cured resin surface appeared more regular and smooth than pour-type resin but less dense and more irregular than heat-cured resin. 5. Scanning electron microscope pictures of pour-type resin with the lowest dimensional change showed the most irregular surface morphology.

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