一种所谓的自粘接水门汀对牙本质的拉伸粘结强度。

Tensile bond strength of a so-called self-adhesive luting resin cement to dentin.

机构信息

Department of Prosthodontics, Propaedeuticsand Dental Materials, Christian-Albrechts University, Kiel, Germany.

出版信息

J Adhes Dent. 2010 Apr;12(2):143-50. doi: 10.3290/j.jad.a17525.

DOI:10.3290/j.jad.a17525

PMID:20157676

Abstract

PURPOSE

The purpose of the study was to evaluate the bond strength and durability of a so-called self-adhesive resin luting cement to human dentin. In addition, the influence of a dentin adhesive system on the bond strength was tested.

MATERIALS AND METHODS

Forty-eight dentin disks from human teeth were divided into two groups of 24 specimens.One group was bonded to composite resin tubes with the self-adhesive luting cement (RelyX Unicem Aplicap, 3MESPE), in the other group the dentin surfaces were conditioned with a three-step dentin adhesive system (OptiBondFL, Kerr) prior to bonding with the same cement. Three subgroups of eight specimens each were tested for tensile bond strength following storage in 37°C tap water for either 3 days or for 150 days with an additional 37,500 thermal cycles either between 20°C and 40°C ("soft TC") or between 5°C and 55°C ("hard TC"). Statistical analyses were performed with the Shapiro-Wilk test, Levene's test, two-way analysis of variance (ANOVA) followed by multiple comparisons with the Scheff test.

RESULTS

Without the dentin adhesive, the mean tensile bond strengths after 3 days were 7.1 ± 3.8 MPa; after 150 days/"soft TC" 6.8 + 3.6; and after 150 days/"hard TC" 5.3 + 4.5 MPa. With the dentin adhesive, the mean bond strengths after 3 days were 16.5 ± 5.5 MPa; after 150 days/"soft TC" 13.1 + 3.9 MPa; and after 150 days/"hard TC" 10.1 + 5.2 MPa.

CONCLUSION

Regardless of storage conditions, the use of a dentin adhesive increased the tensile bond strength of a self-adhesive resin luting cement significantly in comparison to the use of the luting cement without adhesive.

摘要

目的

本研究旨在评估一种所谓的自粘接树脂水门汀与牙本质的粘结强度和耐久性。此外，还测试了一种牙本质粘接系统对粘结强度的影响。

材料和方法

将 48 个人牙牙本质片分为两组，每组 24 个样本。一组用自粘接水门汀（RelyX Unicem Aplicap，3MESPE）粘接于复合树脂管，另一组在牙本质表面用三步牙本质粘接系统（OptiBondFL， Kerr）预处理，然后用相同的水门汀粘接。每组 8 个样本各分 3 个亚组，分别在 37°C 自来水中储存 3 天或 150 天，然后在 20°C 至 40°C（“软 TC”）或 5°C 至 55°C（“硬 TC”）之间进行 37,500 次热循环，分别进行拉伸粘结强度测试。统计分析采用 Shapiro-Wilk 检验、Levene 检验、双因素方差分析（ANOVA），随后用 Scheff 检验进行多重比较。

结果

无牙本质粘接剂时，3 天后的平均拉伸粘结强度为 7.1 ± 3.8 MPa；150 天后“软 TC”为 6.8 ± 3.6 MPa；150 天后“硬 TC”为 5.3 ± 4.5 MPa。使用牙本质粘接剂时，3 天后的平均粘结强度为 16.5 ± 5.5 MPa；150 天后“软 TC”为 13.1 ± 3.9 MPa；150 天后“硬 TC”为 10.1 ± 5.2 MPa。