Hydrofluoric acid on dentin should be avoided
Hydrofluoric acid on dentin should be avoided
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DOI：
10.1016/j.dental.2010.03.007
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发表时间：
2010-07-01
期刊：
影响因子：
5
通讯作者：
Van Meerbeek, B.
中科院分区：
文献类型：
--
作者：
Loomans, B. A. C.;Mine, A.;Van Meerbeek, B.
氢氟酸可用于口腔内修复。氢氟酸对牙齿基质的污染不是总能避免的。通过微拉伸粘接强度测试、扫描电子显微镜和透射电子显微镜观察氢氟酸污染牙本质的粘接效果。在这项研究中，使用了15颗磨牙，其中牙本质表面经历了五种不同的酸蚀程序。A组37.5%磷酸(Kerr Gel)(对照组)，B组37.5%磷酸+3%氢氟酸(DenMat)，C组37.5%磷酸+9.6%氢氟酸(牙髓)，D组3%氢氟酸+37.5%磷酸，E组9.6%氢氟酸+37.5%磷酸。在粘接程序(OptiBond FL，Kerr)之后，复合树脂堆积(透明。L AP-X，库拉雷)。保存1周后，制备试件进行微拉伸粘结测试、扫描电子显微镜和透射电子显微镜分析。数据分析采用方差分析和术后Tukey‘s HSD(p<；0.05)。对照组(单纯磷酸)的平均MUTBS为53.4+/-10.6 Mpa，显著高于任何氢氟酸组(A组与B-E组，p<；0.001)。3%氢氟酸组与9.6%氢氟酸组之间无显著差异：B组与C组(分别为13.5+/-5.5 Mpa和18.7+/-4.3 Mpa)或D组与E组(分别为19.9+/-6.8 Mpa和20.3+/-4.1 Mpa)比较，差异有统计学意义。氢氟酸对树脂与牙本质的粘结强度有不良影响，应避免氢氟酸与牙本质接触。(C)2010年牙科材料学会。爱思唯尔有限公司出版。保留所有权利。
Hydrofluoric acid can be used for intra-oral repair of restorations. Contamination of tooth substrate with hydrofluoric acid cannot always be avoided.Objectives. To investigate the bonding effectiveness to hydrofluoric acid contaminated dentin by, micro-tensile bond strength testing, SEM and TEM.Methods. For this study, 15 molar teeth were used of which dentin surfaces were subjected to five, different etching procedures. Group A, 37.5% phosphoric acid (Kerr Gel) (control group); group B, 37.5% phosphoric acid followed by 3% hydrofluoric acid (DenMat); group C, 37.5% phosphoric acid, followed by 9.6% hydrofluoric acid (Pulpdent); group D, 3% hydrofluoric acid followed by 37.5%, phosphoric acid; group E, 9.6% hydrofluoric acid followed by 37.5% phosphoric acid. After the bonding procedure (OptiBond FL, Kerr) a composite resin buildup (Clear. l AP-X, Kuraray), was made. After 1 week storage, specimens were prepared for micro-tensile bond testing, SEM- and, TEM-analysis. Data were analyzed using ANOVA and post hoc Tukey's HSD (p < 0.05).Results. In the control group (solely phosphoric acid), the mean mu TBS was 53.4 +/- 10.6 MPa, which was, significantly higher than any hydrofluoric acid prepared group (group A versus groups B-E, p < 0.001). No, significant differences in mu TBS were found between the 3% and 9.6% hydrofluoric acid groups: group B versus group C (13.5 +/- 5.5 MPa and 18.7 +/- 4.3 MPa, respectively) or group D versus group E (19.9 +/- 6.8 MPa and 20.3 +/- 4.1 MPa, respectively).Significance. Due to its adverse effect on the bond strength of composite to dentin, contact of hydrofluoric acid to dentin should be avoided. (C) 2010 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.