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논문 기본 정보

자료유형
학술저널
저자정보
Grazioli Guillermo (Department of Dental Materials School of Dentistry Universidad de la República Montevideo Uruguay.) Cuevas-Suárez Carlos Enrique (Laboratory of Dental Materials Academic Area of Dentistry Autonomous University of Hidalgo State Pa) Nakanishi Leina (Graduate Program in Dentistry Federal University of Pelotas Pelotas Brazil.) Francia Alejandro (Department of General and Oral Physiology School of Dentistry Universidad de la República Montevide) Moraes Rafael Ratto de (Graduate Program in Dentistry Federal University of Pelotas Pelotas Brazil.)
저널정보
대한치과보존학회 Restorative Dentistry and Endodontics Restorative Dentistry and Endodontics 제46권 제3호
발행연도
2021.8
수록면
1 - 12 (12page)
DOI
10.5395/rde.2021.46.e39

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초록· 키워드

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Objectives: This study analyzed the physical-chemical behavior of 2 bulk fill resin composites (BFCs; Filtek Bulk Fill [FBF], and Tetric-N-Ceram Bulk Fill [TBF]) used in 2- and 4-mm increments and compared them with a conventional resin composite (Filtek Z250). Materials and Methods: Flexural strength and elastic modulus were evaluated by using a 3-point bending test. Knoop hardness was measured at depth areas 0?1, 1?2, 2?3, and 3?4 mm. The translucency parameter was measured using an optical spectrophotometer. Real-time polymerization kinetics was analyzed using Fourier transform infrared spectroscopy. Results: Flexural strength was similar among the materials, while TBF showed lower elastic modulus (Z250: 6.6 ± 1.3, FBF: 6.4 ± 0.9, TBF: 4.3 ± 1.3). The hardness of Z250 was similar only between 0?1 mm and 1?2 mm. Both BFCs had similar hardness until 2?3 mm, and showed significant decreases at 3?4 mm (FBF: 33.45 ± 1.95 at 0?1 mm to 23.19 ± 4.32 at 3?4 mm, TBF: 23.17 ± 2.51 at 0?1 mm to 15.11 ± 1.94 at 3?4 mm). The BFCs showed higher translucency than Z250. The polymerization kinetics of all the materials were similar at 2-mm increments. At 4-mm, only TBF had a similar degree of conversion compared with 2 mm. Conclusions: The BFCs tested had similar performance compared to the conventional composite when used in up to 2-mm increments. When the increment was thicker, the BFCs were properly polymerized only up to 3 mm.

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