基于微推出实验评价选择性激光烧结多孔桩的粘接强度

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摘要目的探讨选择性激光烧结技术制作Ti6Al4V多孔桩的粘接强度，为提高桩核的粘接强度提供理论依据。方法选取预成纤维桩扫描并获取数字模型，使用选择性激光烧结技术制作Ti6Al4V实心桩及多孔桩，使用CAD-CAM技术制作二氧化锆桩，将不同的桩与桩核树脂进行粘接，获得微推出试件。微推出试件按材质和形态分为实心桩组、多孔桩组及二氧化锆桩组，每组各10件。进行微推出实验，比较三组粘接强度及其破坏情况的差异。结果实心桩组和多孔桩组的粘接强度均高于二氧化锆桩组，且多孔桩组高于实心桩组，差异有统计学意义（P ＜ 0.05）。三组破坏情况比较，差异有统计学意义（P ＜ 0.05）。进一步两两比较显示，多孔桩组粘接界面破坏率低于二氧化锆桩组，粘接内部破坏率高于二氧化锆桩组，混合粘接破坏率高于二氧化锆桩组，差异有统计学意义（P ＜ 0.017）。结论使用选择性激光烧结技术制作的Ti6Al4V多孔桩及实心桩，较二氧化锆桩与桩核树脂的粘接强度有明显的提升。

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	王丁李宁

关键词 ：选择性激光烧结, 粘接强度, 微推出实验, 桩核, 多孔结构

Abstract：Objective To discuss the bonding strength of Ti6Al4V porous pile made by selective laser sintering, and to provide theoretical basis for improving the bonding strength of pile core. Methods Preformed fiber piles were scanned and digital models were obtained. Ti6Al4V solid piles and porous piles were made by selective laser sintering technology, and zirconia piles were made by CAD-CAM technology. Different piles were bonded with post core resin to obtain micropush-out specimens. Micro-extrusion specimens were divided into solid pile group, porous pile group, and zirconia pile group according to material and shape, with 10 pieces in each group. The differences of bonding strength and failure of the three groups were compared by micro-extruding test. Results The bonding strength of solid pile group and porous pile group was higher than zirconia pile group, and the porous pile group was higher than solid pile group, the differences were statistically significant (P ＜ 0.05). There were statistically significant differences in damage among the three groups (P ＜ 0.05). Further pairwise comparison showed that the failure rate of adhesive interface of porous pile group was lower than that of zirconia pile group, the failure rate of internal adhesive was higher than that of zirconia pile group, and the failure rate of mixed adhesive was higher than that of zirconia pile group, with statistical significance (P ＜ 0.017). Conclusion The adhesive strength of Ti6Al4V porous pile and solid pile made by selective laser sintering is obviously improved compared with that of zirconia pile and post core resin.

Key words： Selective laser sintering Bonding strength Micro-extruded test Post core Porous structure

基金资助:民航医学中心（民航总医院）科研课题（201947）。

作者简介: 王丁（1970.11-），男，硕士，副主任医师，民航总医院口腔科科主任；研究方向：口腔种植及3D打印。

引用本文:

王丁李宁. 基于微推出实验评价选择性激光烧结多孔桩的粘接强度[J]. 中国医药导报, 2021, 18(30): 84-87.
WANG Ding LI Ning. Evaluation of bonding strength of selective laser sintering porous pile based on micro-extruded test#br#. 中国医药导报, 2021, 18(30): 84-87.

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https://www.yiyaodaobao.com.cn/CN/ 或 https://www.yiyaodaobao.com.cn/CN/Y2021/V18/I30/84

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