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首页> 外文期刊>The Journal of Prosthetic Dentistry >Effect of adhesive resin cement on design of partial veneer crowns.
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Effect of adhesive resin cement on design of partial veneer crowns.

机译：粘合树脂胶粘剂对部分饰面冠的设计的影响。

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STATEMENT OF PROBLEM: Procedures involved in the tooth preparation, impression, and casting of partial veneer three-quarter crowns are considered to be complex. PURPOSE: This study assessed whether a simplified partial veneer crown design, when cemented with a 4-META adhesive resin, had a comparable resistance to displacement forces compared with a conventionally prepared partial veneer crown cemented with a traditional luting agent. MATERIAL AND METHODS: Conventional partial veneer crowns were prepared on 20 natural premolars, and 20 other premolars received modified partial veneer crown tooth preparations without proximal grooves. Artificial crowns were made for these teeth with Students alloy. Half the crowns in each of the 2 groups were luted with 4-META resin; the other half were luted with a zinc phosphate cement. Loads required to displace the partial veneer crowns were recorded after 24 hours and thermocycling, then the mode of separation was recorded for each crown. Average force required to displace partial veneer crowns for the 4 groups were subjected to 2-way analysis of variance and Scheffe test. RESULTS: The 2 groups luted with 4-META resin and the group with proximal grooves luted with zinc phosphate were not significantly different. However, they were all greater than the group without proximal grooves luted with zinc phosphate cement. CONCLUSION: Forces required to displace partial veneer crowns prepared in a traditional manner and those teeth prepared without proximal grooves were similar if the artificial crowns were luted with adhesive resin cement.
机译：问题陈述：涉及对四分之三的局部饰面的牙齿进行准备，压印和铸造的过程很复杂。目的：本研究评估了与4-META粘合树脂胶合后，简化的局部饰面牙冠设计是否具有与传统制备与传统浸润剂粘合的局部饰面牙冠相当的抵抗位移力的能力。材料和方法：在20个天然前磨牙上制备了常规的部分贴面牙冠，而其他20个前磨牙接受了改良的部分贴面牙冠牙准备，但没有近端凹槽。这些牙用学生合金制成了人造牙冠。用4-META树脂将两组中每个冠的一半冠浸;另一半用磷酸锌胶水诱惑。在24小时和热循环之后，记录了移位部分单板牙冠所需的载荷，然后记录了每个牙冠的分离方式。对4组的部分单板牙冠进行移位所需的平均力经过2方差分析和Scheffe检验。结果：用4-META树脂浸润的2组和用磷酸锌浸润的近侧沟纹的组无显着差异。但是，它们都比没有用磷酸锌水泥腐蚀近端沟的组更大。结论：如果用人造树脂胶粘剂粘接人造牙冠，则以传统方式制备的部分饰面牙冠和那些没有近端凹槽的牙齿所需要的力是相似的。

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