The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)
- Volume 35 Issue 4
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- Pages.719-741
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- 1997
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- 0301-2875(pISSN)
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- 2005-3789(eISSN)
A STUDY ON SURFACE ROUGHNESS OF COMPOSITE RESINS AFTER FINISHING AND POLISHING -an Atomic Force Microscope study
연마방법에 따른 복합레진의 활택도에 관한 연군 -Atomic Force Microscope를 이용한 연구
- Kim, Hyeong-Seob (Department of Prosthodontics, School of Dentistry, Seoul National University) ;
- Woo, Yi-Hyung (Department of Prosthodontics, School of Dentistry, Seoul National University)
- Published : 1997.12.01
Abstract
This study was undertaken to compare by Atomic Force Microscope the effects of various finishing and polishing instruments on surface roughness of filling and veneering composite resins. Seven composite resins were studied : Silux Plus (3M Dental Products, U.S.A.), Charisma (Heraeus Kulzer, Germany), Prisma THP (L.D.Caulk, Dentsply, U.S.A.), Photoclearfil (Kuraray, Japan), Cesead (Kuraray, Japan), Thermoresin LC (GC, Japan), Artglass (Heraeus Kulzer, Germany). Samples were placed and polymerized in holes (2mm thick and 8.5mm in diameter) machined in Teflon mold under glass plate, ensuring excess of material and moulded to shape with polyester matrix strip. Except control group (Polyester matrix strip), all experimental groups were finished and polishied under manufacturer's instructions. The finishing and polishing procedure were : carbide bur (E.T carbide set 4159, Komet, Germany), diamond bur (composite resin polishing bur set, GC, Japan), aluminum-oxide disc (Sof-Lex Pop-On, 3M Dental Products, U.S.A.), diamond-particle disc (Dia-Finish, Renfert Germany), white stone bur & rubber point( composite finishing kit, EDENTA, Swiss), respectively. Each specimens were evaluated for the surface roughness with Atomic Force Microscope (AutoProbe CP, Park Scientific Instruments, U.S.A.) under contact mode and constant height mode. The results as follows : 1. Except Thermoresin LC, all experimental composite resin groups showed more rougher than control group after finishing and polishing(p<0.1). 2. A surface as smooth as control group was obtained by
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