Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
권호 표지

EXPERIMENTAL STUDY OF THE SURFACE FINISHINGS ON THE COMPOSITE RESIN SURFACES

복합(複合)레진의 표면연마(表面硏磨)에 관(關)한 실험적(實驗的) 연구(硏究)

  • Kim, Boo-Rang (Dept. of operative Dentistry, Division of Dentistry, Kyung Hee University) ;
  • Choi, Ho-Young (Dept. of operative Dentistry, Division of Dentistry, Kyung Hee University) ;
  • Park, Sang-Jin (Dept. of operative Dentistry, Division of Dentistry, Kyung Hee University)
  • 김부랑 (경희대학교 치과대학 보존학교실) ;
  • 최호영 (경희대학교 치과대학 보존학교실) ;
  • 박상진 (경희대학교 치과대학 보존학교실)
  • Published : 1982.12.31
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Abstract

The purpose of this study was to evaluate the effect of different polishing procedures on the surfaces of composite resins. Two-paste type comosite restorative resin (Hipol) was selected for this study. 70 cavities prepared on the plaster-stone dies, 6mm in diameter and 2mm in depth, was filled with composite resin according to the manufacturer's specifications and by polymerizing against mylar strips. The polymerized composite resin specimens were polished (surface finished) by using 6 polishing devices; white stones, diamond finishing points, 12-fluted carbide finishing burs, green stones, sand paper disks, and Quasite rubber disk after polished with sand paper disks and green stones. A profilometer (Bendix type) was used to record in microinches the surface roughness of each surface finished composite resin specimens. The results were as follows. 1. The best finished surface that can be obtained is a surface formed by the mylar matrix strip 2. The white stones produced the smoothest surface in the experimental group. 3. The green stones produced the roughest surface in the experimental group. 4. It was proved that the gradual use of finishing instruments from a rough one to fine ones reduced the surface roughness.

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