口腔医学研究

口腔医学研究 ›› 2019, Vol. 35 ›› Issue (4): 382-385.DOI: 10.13701/j.cnki.kqyxyj.2019.04.018

• 口腔修复与材料学研究 • 上一篇    下一篇

预备与不预备前牙超薄瓷贴面断裂模式的比较研究

尹路1*, 郑燕芬2   

  1. 1. 厦门医学院附属口腔医院口腔修复科 福建 厦门 361003;
    2. 厦门医学院附属口腔医院口腔黏膜科 福建 厦门 361003
  • 收稿日期:2018-08-20 出版日期:2019-04-28 发布日期:2019-04-23
  • 通讯作者: 尹路,E-mail:yinlu7989@hotmail.com
  • 作者简介:尹路(1979~ ),男,福建厦门人,博士,副主任医师,主要研究方向为全瓷贴面和种植修复。
  • 基金资助:
    厦门市科技局科技惠民项目(编号:3502Z20174025);厦门医学院课题资助项目(编号:2017001)

Failure Mode of Porcelain Laminate on Prepared and Unprepared Anterior Teeth

YIN Lu1*, ZHENG Yan-fen2   

  1. 1. Department of Prosthodontics, Stomatological Hospital, Xiamen Medical College, Xiamen 361003, China;
    2. Department of Oral Mucosal Membrane, Stomatological Hospital, Xiamen Medical College, Xiamen 361003, China
  • Received:2018-08-20 Online:2019-04-28 Published:2019-04-23

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摘要： 目的: 通过对比前牙基牙预备与不预备后铸瓷贴面的断裂模式,分析其长期成功率。方法: 30例上颌中切牙按照预备方式随机分为3组:A组为全牙面预备,B组为全牙面预备并且抛光车针抛光,C组为不预备,仅用抛光车针抛光。将全瓷贴面(IPS e.max)硅烷化处理后用全瓷粘结剂粘合在处理后的牙面上,分别对每组试件进行剪切力测试,断裂模式采用实体显微镜观察。结果: C组的剪切力值最高,C组与B组的剪切力值有统计学差异(P<0.05)。A组与C组无差异(P>0.05),A组与B组也无差异(P>0.05)。粘接破坏多于内聚破坏。结论: 根据本研究分析未预备前牙超薄瓷贴面的断裂模式结果得出:未预备基牙瓷贴面修复适用于磨损、咬合创伤或磨耗,同时也适用于患者拒绝牙体预备等情况。

关键词: 贴面, 二硅酸锂玻璃陶瓷, 粘接强度, 牙体预备, 断裂模式

Abstract: Objective: To investigate the failure mode of porcelain laminates on prepared- and unprepared- anterior teeth in order to compare their longevity and success rate. Methods: Thirty extracted maxillary central incisors were randomly divided into 3 groups regarding their preparation methods. The preparation methods were full-preparation (group A), full-preparation and finishing with fine diamond bur (group B), and no-preparation, only grinding with diamond bur (group C). After conditioning the teeth, ceramic veneers (IPS e.max) were silanated and then cemented with DuoLink luting cement. The shear bond strength was measured for each group and failure mode was determined by stereomicroscopic examination. Results: Group C exhibited the highest shear bond strength. The shear bond strength was significantly different between groups C and B (P< 0.05). However, the difference between group A and C was insignificant, as was the difference between group A and B (P>0.05). Adhesion failure mode was found to be more common than the cohesive mode. Conclusion: Regarding the failure mode of unprepared anterior teeth to porcelain laminate veneers yielded by this study, no-preparation veneers might be used when the enamel is affected by wearing, trauma, or abrasion. It can also be used in patients who refuse the treatments which involve tooth reduction and preparation.

Key words: Veneer, Lithium silicatte glass ceramics, Shear bonding strength, Tooth preparation, Failure mode