[一种新型牙本质粘结剂对后牙复合树脂修复体周围微渗漏模式的体外研究]。

Odontostomatologike proodos Pub Date : 1989-12-01
J Tzoutzas, T Donovan, M Babou
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引用次数: 0

摘要

最近在粘接剂领域出现了一种全新的产品,名为Scotchbond 2 (3M公司)。由于其改进的配方,制造商声称材料的结合强度和密封能力,使其在前路和后路复合树脂修复中都值得信赖。本体外研究的目的是确定槽型腔周围的微泄漏模式,用后置复合树脂(P-50, 3M Co)修复,使用两代不同的粘结剂。对因正畸原因拔牙的正常前磨牙制备两种类型的空腔。第一组(10颗牙)颈壁位于牙釉质内,牙釉质交界处以上,第二组(10颗牙)颈壁位于CEJ以下。用37%的正磷酸凝胶蚀刻牙腔边缘周围的牙釉质,冲洗干燥,并根据制造商的说明涂抹粘合剂并固化。后部复合材料在三个水平层中逐渐凝结和光固化。样品在4.37到60摄氏度之间热循环200次,每次4分钟,涂上指甲油和粘蜡,在0.5%碱性品红染料中浸泡12小时。在硬组织切片机中,将标本在中远端方向纵向分成两半,并使用光学显微镜评估染料渗透程度。根据得到的结果,我们得出结论:1。在两种类型的腔体中,使用Scotchbond 2可以减少但不能消除后牙复合树脂修复体周围的微渗漏。(摘要删节250字)
本文章由计算机程序翻译,如有差异,请以英文原文为准。
[In vitro study of the microleakage pattern around posterior composite resin restorations using a new dentin bonding agent].

A totally new product, by the name Scotchbond 2 (3M Co) appeared recently in the field of bonding agents. Grace to its improved formula, the manufacturers claim that both the bond strength and the sealing ability of the material, render it trustful for use in both anterior and posterior composite resin restorations. The purpose of this in vitro investigation was to determine the microleakage pattern around slot type cavities, restored with posterior composite resin (P-50, 3M Co) using two different generations of bonding agents. Two types of cavities were prepared in sound premolars extracted for orthodontic reasons. In the first group (10 teeth) the cervical wall was located in the enamel, above the cementoenamel junction and in the second group (10 teeth) the cervical wall was located below the CEJ. The enamel surrounding the cavity margins was etched using 37% orthophosphoric acid gel, rinsed and dried and the bonding agents were applied and cured according to the manufacturer s instructions. The posterior composite was condensed and light-cured incrementally, in three horizontal layers. The samples were thermocycled for 200 cycles of 4 minutes each between 4.37 and 60 degrees centigrade, covered with fingernail varnish and sticky wax and immersed in 0.5% basic fuchsin dye for 12 hours. The specimens were split in two halves longitudinally in a mesiodistal direction in a hard tissues microtome and the degree of dye penetration was evaluated using an optical microscope. According to the results obtained we come to the conclusions that: 1. The use of Scotchbond 2 minimized but did not eliminate the microleakage around posterior composite resin restorations, in both types of cavities.(ABSTRACT TRUNCATED AT 250 WORDS)

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