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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.1
- 수록면
- 309 - 315 (7page)
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초록· 키워드
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Objectives: This study assessed the effect of water storage on the flexural strength (FS) of low shrinkage composites.
Materials and Methods: A total of 165 bar-shaped specimens (2 × 2 × 25 mm) were fabricated of 2 low shrinkage composites (Filtek P90 [3M ESPE], GC Kalore [GC International]) and a conventional methacrylate-based composite (Filtek Z250 [3M ESPE]). The specimens were subjected to 3-point bending test at 6 time intervals, namely: immediately after curing, at 24 hours, 1 week, 1 month, 6 months, and 1 year following storage in wet and dry conditions. The FS of the specimens were measured by applying compressive load at a crosshead speed of 1.0 mm/min. Data was analyzed using 3-way analysis of variance (ANOVA) and Tukey's test.
Results: Three-way ANOVA revealed significant interactions between time, type of composite, and storage condition (p = 0.001). Tukey's multiple comparison test revealed significant reductions in FS of all composites after 6 months and 1 year of storage in distilled water compared to dry condition.
Conclusions: Filtek P90 showed the highest and GC Kalore showed the lowest FS after 1 year storage in distilled water. The immediate high strength of Filtek Z250 significantly decreased at 1 year and its final value was lower than that of Filtek P90.
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참고문헌 (22)
참고문헌 신청
Arrais CA / 2013 / Silorane- and high filled-based “lowshrinkage”resin composites: shrinkage, flexural strength and modulus / Braz Oral Res 27 : 97 ~ 102
Asmussen E / 2001 / Influence of selected components on crosslink density in polymer structures / Eur J Oral Sci 109 : 282 ~ 285
Chang M / 2013 / Physical property evaluation of four composite materials / Oper Dent 38 : E144 ~ E153
Cramer NB / 2011 / Recent advances and developments in composite dental restorative materials / J Dent Res 90 : 402 ~ 416
Czasch P / 2013 / In vitro comparison of mechanical properties and degree of cure of bulk fill composites / Clin Oral Investig 17 : 227 ~ 235
Asmussen E / 2001 / Influence of selected components on crosslink density in polymer structures / Eur J Oral Sci 109 : 282 ~ 285
Chang M / 2013 / Physical property evaluation of four composite materials / Oper Dent 38 : E144 ~ E153
Cramer NB / 2011 / Recent advances and developments in composite dental restorative materials / J Dent Res 90 : 402 ~ 416
Czasch P / 2013 / In vitro comparison of mechanical properties and degree of cure of bulk fill composites / Clin Oral Investig 17 : 227 ~ 235
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