一步法同期设计制作玻璃纤维桩核和全瓷冠修复体的边缘微渗漏研究  

Study on the marginal microleakage of glass fiber post-and-cores and all-ceramic crowns by a one-step method of designing and fabricating simultaneously

作　　者：谢雯静 张紫薇 张宇航 李燕燕 徐子昂 张玮[1,2,3] XIE Wenjing;ZHANG Ziwei;ZHANG Yuhang;LI Yanyan;XU Ziang;ZHANG Wei(Department of Oral Special Consultation,Affilia-ted Stomatological Hospital of Nanjing Medical University,Nanjing 210029,China)

机构地区：[1]南京医科大学附属口腔医院特诊科,江苏南京210029 [2]南京医科大学口腔疾病研究江苏省重点实验室,江苏南京210029 [3]江苏省口腔转化医学工程研究中心,江苏南京210029 [4]南京医科大学附属口腔医院数字化中心,江苏南京210029

出　　处：《口腔医学》2022年第4期300-303,共4页Stomatology

基　　金：江苏省自然科学基金(青年科技人才专项资金)(BK20171057)。

摘　　要：目的研究一步法同期设计制作纤维桩核和全瓷冠修复体的边缘微渗漏,为该方法的临床应用提供理论依据。方法收集20颗离体牙,将其随机分为实验组和对照组,实验组同期进行桩道预备和全瓷冠基牙预备,数字化软件同期设计并切削制作玻璃纤维桩核+全瓷冠;对照组进行全瓷冠基牙预备,切削制作全瓷冠。所有样本进行温度循环试验和亚甲基蓝染色,切开后于体视显微镜下观察并测量冠向微渗漏结果。结果实验组和对照组样本的冠方染料渗透于全瓷冠和牙体组织边缘,染料粘附于粘接剂表面,多为肩台处横向渗透,实验组未出现桩核边缘明显染料渗透,实验组和对照组相比,边缘微渗漏测量结果无统计学差异(P>0.05)。结论一步法同期设计制作玻璃纤维桩核和全瓷冠修复体可以满足临床对于全瓷冠边缘封闭性的要求。Objective To study the marginal microleakage of glass fiber post-and-cores and all-ceramic crowns by a one-step method of designing and fabricating simultaneously to provide a theoretical basis for clinical application of this method.Methods Twenty isolated teeth were collected and divided into the experimental group and the control group randomly.Teeth in the experimental group were prepared with post and all-ceramic crown abutment.Post-and-cores and all-ceramic crowns were designed by digital software simultaneously and were then fabricated.Teeth in the control group were prepared with all-ceramic crown abutment and crowns were then manufactured.All samples were subjected to temperature cycling test and methylene blue staining.After incisions,results of coronal microleakage were observed and measured under a stereo microscope.Results The crown dye of all samples penetrated into edges of all-ceramic crowns and tooth tissues,and adhered to surface of the adhesive at shoulders horizontally.In the experimental group,there was no obvious dye penetration at the edge of post-and-cores.Comparing measurement results of the marginal microleakage,there was no statistically significant difference between the experimental group and the control group(P>0.05).Conclusion It is shown that glass fiber post-and-cores and all-ceramic crowns by a one-step method of designing and fabricating simultaneously can meet clinical requirements for the edge suitability of all-ceramic crowns.

关 键 词：一步法 玻璃纤维桩核 全瓷冠 微渗漏 

分 类 号：R783.3[医药卫生—口腔医学]