水门汀层厚和涂布方式对氧化锆单冠与种植体基台粘固效果的影响

The influence of resin-reinforced glass ionomer cement coating method on the effect of cementation between dental implant abutment and zirconium crown

目的:研究种植体支持的氧化锆单冠粘固修复时,传统涂布方法和水门汀预压薄方法水门汀残留和粘接强度的差别。方法:应用Sinora CEREC系统扫描Ankylos标准B型6 mm种植体基台替代体,设计出水门汀层厚为50、80、110μm,厚度为1 mm的氧化锆单冠3D数字模型,通过Sinora CEREC系统的CAD/CAM制作出氧化锆单冠。应用传统涂布方法和水门汀预压薄方法,将不同水门汀层厚的氧化锆单冠用树脂加强型玻璃离子水门汀粘固在种植体基台替代体上。观察人工牙龈中水门汀的残留情况,并分别检测不同水门汀层厚氧化锆单冠的粘接强度。结果:用水门汀预压薄方法粘固,50μm组的粘接力明显大于80和110μm组,80和110μm组的粘接力无明显差异。用传统涂布方法粘固,110μm组的粘接力明显小80和50μm组,80和50μm组的粘接力无明显差异。3种水门汀层厚的氧化锆单冠用传统涂布方法粘固后,种植体替代体周围和人工牙龈中溢出和残留的水门汀多于水门汀预压薄方法粘固。结论:树脂加强型玻璃离子水门汀预压薄方法粘固种植体支持的氧化锆单冠时,水门汀层厚的设计以50～80μm较佳,而用传统涂布方法粘固时水门汀层厚的设计以80～110μm为好。

Objective:To study the difference of cement residue and adhesion in the conventional coating method and extra-oral cementation method for single zirconia crown supported by dental implants with different thickness of cement.Methods:The Ankylos standard type B 6 mm implant abutment analog was scanned by the Sinora CEREC system and the 3D digital model of zirconia single crown with the thickness of 50,80 and 110μm of the cement layer and 1 mm of the thickness was designed.The zirconia single crown was cut and sintered by CAD/CAM of Sinora CEREC system.The zirconia crowns with the different thickness of cement layer was cemented on the Ankylos standard type B 6 mm implant abutment analogs by traditional coating method and extra-oral cementation method with the resin reinforced glass ionic cement.The residue of cement in the artificial gingiva was observed in each group,and the adhesion of two methods in each group was detected respectively.Results:There was significant difference in the adhesion between the group with the cement layer thickness of 50μm and the other groups.However,there was no significant difference in the adhesion between the groups with the cement layer thickness of 80μm and 110μm.The adhesion of the cement layer thickness of 110μm group of adhesion is significantly less than the other groups by the conventional coating method.There is no significant difference in adhesion between the cement layer thickness of 80μm and 50μm groups.The residual cement around the implant and in the artificial gingiva of the three kinds of zirconia single crowns with three different cement thickness layers cemented by conventional coating method were more than that by the extra-oral cementation method.Conclusions:The zirconia single crown was cemented by extra-oral method with the resin reinforced glass ionic cement was better to be of 50~80μm cement thickness,while by conventional coating method was better to be of 80~110μm cement thickness.