Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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Flexural strength of indirect composite resin with different polymerization conditions

중합 조건에 따른 간접복합레진의 굴곡강도

  • Geum, Young-Hee (Department of Dental Laboratory Science Graduate School, Catholic University of Pusan) ;
  • Kim, Busob (Department of Dental Laboratory Science Graduate School, Catholic University of Pusan)
  • 금영희 (부산가톨릭대학교 대학원, 보건과학대학 치기공학과) ;
  • 김부섭 (부산가톨릭대학교 대학원, 보건과학대학 치기공학과)
  • Received : 2013.11.12
  • Accepted : 2013.12.17
  • Published : 2013.12.30
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Abstract

Purpose: The purpose of this study was to evaluate the flexural strength of indirect composite resins with different polymerization conditions. Methods: Ten specimens ($2mm{\times}2mm{\times}25mm$) of each composite resins (Tescera (T), Gradia (S) and Sinfony (S)) were fabricated by two polymerization methods : manufacturers's and light heat pressure. Composite resins polymerized by manufacturers's method and light heat pressure served as control (TS, GS and SS) and experimental groups (TE, GE and SE), respectively. The composite resins were tested for flexural strength and the surface of composite resins were observed with scanning electron microscope (SEM) under X1,000 magnification. Results: The flexural strength values of cured composite resin decreased in the following order: TE (195.4MPa), TS (179.8MPa), GE (169.9MPa), SE (137.7MPa), SS (111.1MPa) and GS (100.9MPa) groups. Conclusion: The flexural strength values between the control and the experimental groups were not significantly different although experimental groups showed higher flexural strength values than control groups.

Keywords

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