Retief D H, Mandras R S, Russell C M
Department of Biomaterials, University of Alabama School of Dentistry, Birmingham 35294.
Am J Dent. 1994 Feb;7(1):44-6.
The purpose of this in vitro study was to determine the relationship between the shear bond strength [SBS] of seven dentin bonding systems to dentin and the quantitative microleakage [ML] of Class V preparations in dentin restored with these systems. The systems evaluated were All-Bond/Bisfil-P [A]; Syntac/Heliomolar [B]; XR-Bond/Herculite [C]; Scotchbond 2/Silux [D]; Denthesive/Charisma [E]; Prisma Universal Bond 2/Prisma AP.H [F]; and Tenure/Perfection [G]. The 115 specimens were removed from the assembly apparatus and stored in saline at 37 degrees C for 24 hours, the SBS determined and expressed in MPa. Fifteen Class V preparations in dentin were restored with each of the bonding systems, thermocycled 500x in 2% methylene blue solution between 50 degrees C and 8 degrees C, and the ML determined by means of a spectrophotometric dye-recovery method. The ML was expressed in microgram dye/restoration. The data were analyzed by ANOVA, Student-Newman-Keuls test, and linear regression analysis. The SBS in MPa were: A:17.2 +/- 3.6; B:15.9 +/- 2.1; C:15.4 +/- 3.7; D:11.6 +/- 2.2; E:10.7 +/- 3.7; F:10.4 +/- 2.5; G:8.2 +/- 3.9. The ML in microgram dye/restoration were: A:2.6 +/- 1.2; B:2.6 +/- 1.0; C:2.2 +/- 1.9; D:3.1 +/- 2.9; E:4.6 +/- 4.2; F:2.6 +/- 2.5; G:4.4 +/- 4.1. SBS = 20.91-2.60 [microgram dye]. The results suggest that a SBS of +/- 21 MPa may reduce ML to near zero.
本体外研究的目的是确定七种牙本质粘结系统与牙本质之间的剪切粘结强度（SBS）以及用这些系统修复的牙本质Ⅴ类洞型的定量微渗漏（ML）之间的关系。所评估的系统包括全粘结/双氟-P（A）； Syntac/光固化玻璃离子（B）； XR粘结剂/超硬复合树脂（C）； 3M Scotchbond 2/3M Silux（D）； Denthesive/卡瑞斯玛（E）； 普瑞玛通用粘结剂2/普瑞玛AP.H（F）；以及Tenure/Perfection（G）。115个标本从组装装置中取出，在37℃的盐水中储存24小时，测定SBS并以MPa表示。用每种粘结系统修复15个牙本质Ⅴ类洞型，在50℃和8℃之间的2%亚甲蓝溶液中进行500次热循环，然后用分光光度法染料回收法测定ML。ML以微克染料/修复体表示。数据采用方差分析、学生-纽曼-柯尔斯检验和线性回归分析。以MPa为单位的SBS分别为：A：17.2±3.6；B：15.9±2.1；C：15.4±3.7；D：11.6±2.2；E：10.7±3.7；F：10.4±2.5；G：8.2±3.9。以微克染料/修复体为单位的ML分别为：A：2.6±1.2；B：2.6±1.0；C：2.2±1.9；D：3.1±2.9；E：4.6±4.2；F：2.6±2.5；G：4.4±4.1。SBS = 20.91 - 2.60[微克染料]。结果表明，±21MPa的SBS可能会将ML降低至接近零。
