中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (22): 3517-3521.doi: 10.3969/j.issn.2095-4344.3227

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

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

刘宁宁,王  冰   

  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
  • 收稿日期:2020-08-04 修回日期:2020-08-07 接受日期:2020-09-21 出版日期:2021-08-08 发布日期:2021-01-20
  • 通讯作者: 王冰,硕士,主治医师,新疆医科大学第一附属医院(附属口腔医院)颌面肿瘤外科,新疆维吾尔自治区乌鲁木齐市 830054
  • 作者简介:刘宁宁,女,1985年生,新疆维吾尔自治区乌鲁木齐市人,汉族,技师,主要从事口腔修复学、口腔数字化研究。
  • 基金资助:
    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

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

Liu Ningning, Wang Bing   

  1. Department of Prosthodontics, First Affiliated Hospital (Affiliated Stomatological Hospital) of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Received:2020-08-04 Revised:2020-08-07 Accepted:2020-09-21 Online:2021-08-08 Published:2021-01-20
  • Contact: Wang Bing, Master, Attending physician, Department of Prosthodontics, First Affiliated Hospital (Affiliated Stomatological Hospital) of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • About author:Liu Ningning, Technician, Department of Prosthodontics, First Affiliated Hospital (Affiliated Stomatological Hospital) of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Supported by:
    the Special Scientific Research Project of Health Young Medical Science and Technology Talents in Xinjiang Autonomous Region, No. WJWY-201924 (to WB)

摘要:

文题释义:
MK1精密附着体:是一种固定-活动联合修复体,精密附着体固定端一般采用金瓷冠与活动端相联,多以双基牙或三基牙联冠为固定端,并在远中置MK1精密附着体,缺牙区正常排牙,恢复至第二磨牙的修复义齿。
MK1精密附着修复体崩瓷的原因:MK1精密附着体以金瓷固定端与活动端相联,如果患者一侧为游离端牙列缺损、对侧为非游离端缺失,应在游离端牙列缺损侧选择近中双基牙联冠,在远端同时放置精密附着体,缺牙区正常排牙,恢复至第二磨牙。MK1精密附着体游离端无基牙支持,多设计单端桥,缺牙区无骨性支持,长期使用会使牙槽骨丧,缺牙底部出现间隙而导致义齿旋转、倾斜,栓体栓道就位与咬牙合偏差,从而导致瓷层内应力集中,最终导致精密附件固定端崩瓷现象的发生。
钯银合金在MK1精密附着体的运用:钯银合金是含有58%Pd和30%Ag的贵金属成分,其生物相容性好,粘接界面之间形成化学键和范德华力,贵金属的粘接及剪切粘接强度高,具有较好的粘接稳定性。 

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。

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

Abstract: 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. 

Key words: materials, oral cavity, denture, MK1 precision attachment, reconstructed crown, porcelain collapse, resin, shear bonding strength

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