el-Kalla I H, García-Godoy F
Department of Pediatric Dentistry, University of Texas Health Science, Center at San Antonio 78284-7888, USA.
Am J Dent. 1997 Apr;10(2):83-7.
To determine and compare the shear bond strength of four single-bottle adhesives to enamel and dentin contaminated with human saliva.
Prime & Bond 2.1, One Step, Tenure Quik and Syntac Single Component were evaluated. Ninety-six sound molars were divided into three subgroups for each of the four adhesives. Small flat areas on the buccal and lingual surfaces were ground in enamel. Small flat areas on the mesial and distal surfaces were ground on the middle dentin of the same teeth. Each adhesive was tested under: uncontaminated conditions (Group 1), contamination of the bonding surface with fresh whole saliva for 20 seconds and removing the excess with cotton pellets (Group 2), and contamination of the bonding surface with fresh whole saliva for 20 seconds and rinsing the saliva for 20 seconds before adhesive application (Group 3). After adhesive application, a plastic mold was filled with composite, applied to the bonding surface and light-cured. The teeth were thermocycled (1,000 cycles) and sheared using an Instron testing machine. The results were analyzed using a three-way ANOVA.
Saliva contamination of enamel or dentin did not affect the shear bond strength of the adhesives tested except for Syntac SC with contaminated dried enamel. One Step displayed similar bond strengths to both enamel and dentin; P & B 2.1, Tenure Q and Syntac SC displayed higher bond strength to enamel than to dentin. P & B 2.1 showed significantly higher bond strengths to enamel than the other adhesives, but there was no significant difference for dentin bond strength under the uncontaminated condition.
测定并比较四种单瓶装粘合剂与受人类唾液污染的牙釉质和牙本质之间的剪切粘结强度。
对Prime & Bond 2.1、One Step、Tenure Quik和Syntac单组分粘合剂进行评估。96颗完好的磨牙针对四种粘合剂中的每一种均分为三个亚组。在牙釉质的颊面和舌面打磨出小的平坦区域。在同一颗牙齿的中牙本质的近中面和远中面打磨出小的平坦区域。每种粘合剂在以下条件下进行测试：未受污染的条件（第1组）、用新鲜全唾液污染粘结面20秒并用棉球去除多余唾液（第2组）、以及用新鲜全唾液污染粘结面20秒并在涂抹粘合剂前冲洗唾液20秒（第3组）。涂抹粘合剂后，用复合材料填充塑料模具，施加到粘结面上并进行光固化。对牙齿进行热循环（1000次循环），并使用Instron测试机进行剪切。结果采用三因素方差分析进行分析。
牙釉质或牙本质的唾液污染除了对受污染干燥牙釉质的Syntac SC外，并未影响所测试粘合剂的剪切粘结强度。One Step对牙釉质和牙本质显示出相似的粘结强度；P & B 2.1、Tenure Q和Syntac SC对牙釉质的粘结强度高于牙本质。P & B 2.1对牙釉质的粘结强度显著高于其他粘合剂，但在未受污染条件下牙本质粘结强度无显著差异。
