使用三种树脂重衬后加工义齿基托的尺寸变化。

Dimensional changes of processed denture bases after relining with three resins.

作者信息

Breeding L C, Dixon D L, Lund P S

机构信息

Department of Oral Health Practice, University of Kentucky, College of Dentistry, Lexington.

出版信息

J Prosthet Dent. 1991 Nov;66(5):650-6. doi: 10.1016/0022-3913(91)90447-5.

DOI:10.1016/0022-3913(91)90447-5

PMID:1823136

Abstract

This study compared the dimensional change of simulated processed denture bases after relining with three resins. Thirty simulated denture bases 1.5 to 2 mm thick were processed from Lucitone 199 resin following the manufacturer's instructions using the long-cure method. Ten bases were relined with Lucitone 199 (long-cure), 10 were relined with Triad resin, and 10 were relined with Accelar 20 resin. The relined bases were processed on a metal die using a reline jig, and three measurements (from distobuccal flange to distobuccal flange) were made with a traveling microscope immediately before and after relining. Each relined simulated denture base showed a significant dimensional shrinkage after processing. The mean dimensional change values of the Triad resin relined bases were significantly greater than those of the other two resin relined bases. All of the dimensional change values, however, would probably be insignificant in a clinical situation.

摘要

本研究比较了用三种树脂重衬后模拟加工义齿基托的尺寸变化。按照制造商的说明，采用长固化法，用Lucitone 199树脂加工了30个厚度为1.5至2毫米的模拟义齿基托。10个基托用Lucitone 199（长固化）重衬，10个用Triad树脂重衬，10个用Accelar 20树脂重衬。重衬后的基托在金属模型上使用重衬夹具进行加工，并在重衬前后立即用移动显微镜进行三次测量（从远中颊侧翼缘到远中颊侧翼缘）。每个重衬后的模拟义齿基托在加工后均显示出明显的尺寸收缩。Triad树脂重衬基托的平均尺寸变化值明显大于其他两种树脂重衬基托的变化值。然而，在临床情况下，所有这些尺寸变化值可能都不显著。