지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 37 - 43 (7page)
이용수
초록· 키워드
오류제보하기
ObjectivesSome antioxidants are believed to restore dentin bond strength after dental bleaching. This study was done to evaluate the influence of antioxidants on the bond strength of bleached bovine dentin.
Materials and MethodsThirty incisors were randomly assigned to 10 groups (two unbleached control and eight bleached groups: immediate bonding IB, 4 wk delayed bonding DB, 10% sodium ascorbate treated SA, 10% α-tocopherol treated TP groups). Teeth in half of groups were subjected to thermal stress, whereas the remaining groups were not. Resin-dentin rods with a cross-sectional area of 2.25 mm2 were obtained and microtensile bond strength was determined at a crosshead speed of 1 mm/min. Fifteen specimens were prepared for SEM to compare the surface characteristics of each group. The change in dentin bond strength from thermal stress and antioxidant treatment was evaluated using two-way analysis of variance (ANOVA) and Sheffe's post hoc test at a significance level of 95%.
ResultsThe control group exhibited the highest bond strength values, whereas IB group showed the lowest value before and after thermocycling. The DB group recovered its bond strength similar to that of the control group. The SA and TP groups exhibited similar bond strength values with those of the control and DB groups before thermocycling. However, The TP group did not maintain bond strength with thermal stress, whereas the SA group did.
ConclusionsApplying a 10% sodium ascorbate solution rather than 10% α-tocopherol solution for 60 sec is recommended to maintain dentin bond strength when restoring non-vitally bleached teeth.
목차
등록된 정보가 없습니다.
참고문헌 (29)
참고문헌 신청
Buettner GR / 1993 / The pecking order of free radicals and antioxidants: lipid peroxidation, alpha-tocopherol, and ascorbate / Arch Biochem Biophys 300:535~543
Kum KY / 2004 / Effects of removing residual peroxide and other oxygen radicals on the shear bond strength and failure modes at resin-tooth interface after tooth bleaching / Am J Dent 17:267~270
Perdigão J / 1998 / Ultra-morphological study of the interaction of dental adhesives with carbamide peroxide-bleached enamel / Am J Dent 11:291~301
Attin T / 2005 / Subsurface microhardness of enamel and dentin after different external bleaching procedures / Am J Dent 18 : 8 ~ 12
Brigelius-Flohe R / 1999 / Vitamin E: function and metabolism / FASEB J 13 : 1145 ~ 1155
Kum KY / 2004 / Effects of removing residual peroxide and other oxygen radicals on the shear bond strength and failure modes at resin-tooth interface after tooth bleaching / Am J Dent 17:267~270
Perdigão J / 1998 / Ultra-morphological study of the interaction of dental adhesives with carbamide peroxide-bleached enamel / Am J Dent 11:291~301
Attin T / 2005 / Subsurface microhardness of enamel and dentin after different external bleaching procedures / Am J Dent 18 : 8 ~ 12
Brigelius-Flohe R / 1999 / Vitamin E: function and metabolism / FASEB J 13 : 1145 ~ 1155
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