金瓷再造冠修补MK1精密附着体固定端非栓道基牙牙冠的可行性  

Feasibility of repairing the fixed end non-bolt abutment crown of MK1 precision attachment with porcelain-fused-to-metal crown

作　　者：刘宁宁[1] 王冰[1] Liu Ningning;Wang Bing(Department of Prosthodontics,First Affiliated Hospital(Affiliated Stomatological Hospital)of Xinjiang Medical University,Urumqi 830054,Xinjiang Uygur Autonomous Region,China)

机构地区：[1]新疆医科大学第一附属医院(附属口腔医院)口腔修复科,新疆维吾尔自治区乌鲁木齐市830054

出　　处：《中国组织工程研究》2021年第22期3517-3521,共5页Chinese Journal of Tissue Engineering Research

基　　金：新疆自治区卫生健康青年医学科技人才专项科研项目(WJWY-201924),项目负责人:王冰。

摘　　要：背景:临床工作中修补精密附着体固定端瓷崩瓷的方法主要是拆除重新制作、口腔修复科采用瓷套冠方法进行崩瓷修补,取得了良好的效果。目的:通过体外实验比较全冠式再造冠、颊面部分冠式再造冠及树脂直接修复3种修补方法对MK1精密附着体固定端非栓道基牙牙冠崩瓷后的修补效果。方法:制作MK1金瓷全冠固定端非栓道基牙牙冠崩瓷试件45个,其中15个进行全冠式再造冠修复,15个进行颊面部分式再造冠修复,分别进行玻璃离子水门汀常规粘接;剩余的15个直接进行树脂修复。检测各组试件的最大剪切粘接强度。结果与结论:全冠式再造冠、颊面部分式再造冠及树脂直接修复崩瓷试件的剪切粘接强度分别为(9.95±0.97),(5.50±0.76),(1.92±0.52)MPa,各组之间比较差异有显著性意义(P均<0.001)。结果表明,金瓷再造冠修补崩瓷MK1精密附着体具有可行性,全冠式及颊面部分式再造冠明显优于树脂直接修复。BACKGROUND:In clinical work,the main methods to repair the broken porcelain at the fixed end of the precise attachment are to dismantle and re-make,and the prosthodontics department adopts the method of porcelain crown to repair the broken porcelain patients,which has achieved good results.OBJECTIVE:To compare the repair effects of full crown type,buccal partial crown type and crown the resin after the MK1 precision attachment fixed end collapsed through the experiment in vitro.METHODS:Forty-five specimens of MK1 gold porcelain crown fixed end non-bolting dental crown were prepared.Among them,15 were fully crown reconstructed crown and 15 were buccal and facial reconstructed crown respectively.Conventional bonding of glass ion-cement was performed.The remaining 15 were repaired directly with resin.The maximum shear bonding strength of each sample was detected.RESULTS AND CONCLUSION:The shear bonding strength of the full-crown reconstructed crown,the buccal and facial reconstructed crown,and the resin directly repaired broken porcelain specimens were(9.95±0.97),(5.50±0.76),and(1.92±0.52)MPa,respectively,with significant differences among the groups(all P<0.001).The results showed that it was feasible to repair the precise attachment of broken porcelain MK1 with the reconstructed gold porcelain crown,and the reconstructed crown and the reconstructed cheek and face crown were obviously superior to the resin direct repair.

关 键 词：材料 口腔 义齿 MK1精密附着体 再造冠 崩瓷 树脂 剪切粘接强度 

分 类 号：R459.9[医药卫生—治疗学] R782.12[医药卫生—临床医学]