Restorative Dentistry and Endodontics
- 제21권1호
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- Pages.136-149
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- 1996
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- 2234-7658(pISSN)
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- 2234-7666(eISSN)
수종의 All-Etching Agent와 산부식시간에 따른 법랑질 산부식형태 및 전단 결합강도에 관한 연구
THE EFFECTS OF VARIOUS ALL-ETCHING AGENTS AND VARIED ETCHING TIME ON ENAMEL MORPHOLOGY AND BOND STRENGTH
- Kwon, So-Ran (Department of Conservative Dentistry, College of Dentistry, Yonsei University) ;
- Yoon, Tae-Hyun (Department of Conservative Dentistry, College of Dentistry, Yonsei University) ;
- Park, Dong-Soo (Department of Conservative Dentistry, College of Dentistry, Yonsei University)
- 발행 : 1996.03.20
초록
The effects of various All-Etching Agents (10% phosphoric acid, 10% maleic acid and 10 % citric acid) and 32 % phosphoric acid and varied etching time were evaluated by observing the morphology of the etched enamel surfaces using Scanning electron microscopy and by measuring the shear bond strength of a composite resin to human enamel. A total of 156 extracted premolar and molar teeth free of irregularities were employed in this study. Specimens for the observation of enamel morphology were divided into 12 groups of 3 teeth each, based on the type of etchant used and application time. After exposure to the etching agent specimens were washed air-dried and then glued to aluminum stubs and coated with a layer of gold for examination in the scanning electron microscope. Specimens for the evaluation of bond strength were divided into 12 groups of 10 teeth each also based on the type of etchant used and application time. After exposure to the etching agent the specimens were washed, air-dried and a thin layer of bonding agent was applied using a brush. Z 100 composite resin was light cured to the surface and stored at