Evaluation of fracture resistance of indirect composite resin crowns by cyclic impact test: Influence of crown and abutment materials
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概要
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This study evaluated the effect of abutment materials on the fracture resistance of composite crowns for premolars. Composite crowns were fabricated using two different indirect composite resin materials (Meta Color Prime Art or Estenia C&B) and cemented onto either a metal (Castwell M.C. 12) or composite resin (Build-It FR and FibreKor) abutment with resin cement (Panavia F2.0). Twenty-four specimens were fabricated for four groups (n=6 each) and subjected to 280-N cyclic impact loading at 1.0 Hz. The number of cycles which caused the composite crown to fracture was defined as its fracture resistance. All data were statistically analyzed using ANOVA and the Bonferroni test (α=0.05). Composite crowns cemented onto resin abutments showed higher fracture resistance than those cemented onto metal abutments.
著者
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MINAMI Hiroyuki
Fixed Prosthetic Clinic, Kagoshima University Medical and Dental Hospital
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Suzuki Shiro
Department Of Gastroenterology And Hepatology Tokyo Medical University
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Minami Hiroyuki
Fixed Prosthetic Clinic Kagoshima University Medical And Dental Hospital
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TANAKA Takuo
Department of Fixed Prosthetic Dentistry, Advanced Therapeutic Course, Kagoshima University Graduate School of Medical and Dental Sciences
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SAKOGUCHI Kenji
Department of Fixed Prosthetic Dentistry, Advanced Therapeutic Course, Kagoshima University Graduate School of Medical and Dental Sciences
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