厚度和内表面处理对高透氧化锆贴面抗折性影响的研究

doi:10.13701/j.cnki.kqyxyj.2023.03.015

摘要/Abstract

摘要： 目的: 研究不同厚度和不同处理方式的下颌前磨牙高透氧化锆贴面的抗折性。方法: 选择新鲜拔除的下颌前磨牙54个,5Y-PSZ贴面根据厚度不同分为两组,薄型贴面(A组)和厚型贴面(B组),每种厚度的贴面有3种内表面处理方式,对照组为不处理(A1、B1组),两个实验组分别为喷砂(A2、B2组),陶瓷涂层(A3、B3组)。贴面粘接后,冷热循环5000次后测试贴面的静态折裂载荷,观察折裂模式,分析折裂载荷。结果: 薄型贴面中,A2和A3的折裂载荷较大,且A2、A3之间没有显著性差异。厚型贴面中,B3的折裂载荷较大,与B2、B1有显著差异;且B2与B1之间,B2折裂载荷较大。相同处理方式中,厚型贴面抗折性要强于薄型贴面。结论: 薄型5Y-PSZ贴面和厚型贴面都适合下颌前磨牙的修复,贴面粘接之前建议对内表面进行喷砂或者陶瓷涂层处理,尤其是薄型贴面。

关键词: 贴面, 高透氧化锆, 抗折力

Abstract: Objective: To study the fracture resistance of high translucent zirconia veneer of mandibular premolars with different thicknesses and different treatment methods. Methods: Fifty-four freshly extracted mandibular premolars were selected. The 5Y-PSZ veneer was divided into thin veneer (Group A) and thick veneer (Group B) groups according to the thickness. Each group had three internal surface treatments: the control group was not treated (group A1, B1), and the two experimental groups were sandblasted (group A2, B2) and ceramic coating (group A3, B3). After luting, the static fracture resistance of the veneer was tested after thermocycles(5,000 cycles)and the fracture patterns was recorded . The fracture resistance value was analyzed. Results: In thin veneer, the fracture resistances of A2 and A3 were larger, and there was no significant difference between A2 and A3. In the thick veneer, the fracture resistance of B3 was the largest, which was significantly different from those of B2 and B1, and the fracture resistance of B2 was larger than that of B1. In the same treatment, the fracture resistances of thick veneer were stronger than those of thin veneer. Conclusion: Both thin 5Y-PSZ veneer and thick 5Y-PSZ veneer are suitable for the restoration of mandibular premolars. It is recommended to sandblast or ceramic coating the internal surface of veneer, especially for thin veneer before luting.

Key words: ceramic veneers, high translucent zirconia, fracture resistance

李彤, 沈文静, 陈志宇, 窦晨云, 李贝贝, 孙梦雯, 孟令强. 厚度和内表面处理对高透氧化锆贴面抗折性影响的研究[J]. 口腔医学研究, 2023, 39(3): 266-271.

LI Tong, SHEN Wenjing, CHEN Zhiyu, DOU Chenyun, LI Beibei, SUN Mengwen, MENG Lingqiang. Effect of Thickness and Internal Surface Treatments on Fracture Resistance of High Translucent Zirconia Veneers[J]. Journal of Oral Science Research, 2023, 39(3): 266-271.

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