口腔医学研究

口腔医学研究 ›› 2018, Vol. 34 ›› Issue (1): 73-76.DOI: 10.13701/j.cnki.kqyxyj.2018.01.018

• 口腔颌面外科学研究 • 上一篇    下一篇

基底冠形态设计对氧化锆全冠抗折强度的影响

李亚芹1,2, 吕文芳1, 曹阳1, 曹桂珍3, 彭斐4, 杨芳1, 卢恕来1, 于江波1, 陈书兰1, 郭大伟1*   

  1. 1. 青岛大学附属青岛市市立医院口腔科 山东 青岛 266000;
    2. 青岛大学 山东 青岛 266000;
    3. 胜利油田中心医院 山东 东营 257000;
    4. 威海口腔医院 山东 威海 264200
  • 收稿日期:2017-08-31 出版日期:2018-01-28 发布日期:2018-01-26
  • 通讯作者: 郭大伟,E-mail:13695426628@163.com
  • 作者简介:李亚芹(1989~ ),女,山东腾州人,硕士,主要从事口腔修复的研究工作。
  • 基金资助:
    国家自然科学基金面上项目(编号:81670979);青岛市医药卫生科技发展计划项目(编号:2016-WSZD0012);青岛市医疗卫生优秀人才培养项目(编号:V市DTR2016Y08);青岛市市立医院“总院长新技术、新项目创新研究基金”(编号:Ⅷ院ZYZJJ2017088)

Influence of Framework Design on Fracture Strength of Zirconia Crown

LI Ya-qin1,2, LV Wen-fang1, CAO Yang1, CAO Gui-zhen3, PENG Fei4, YANG Fang1, LU Su-lai1, YU Jiang-bo1, Chen Shu-lan1, GUO Da-wei1*   

  1. 1. Department of Stomatology, Qingdao Municipal Hospital Affiliated to Qingdao University. Qingdao 266000, China;
    2. Qingdao University. Qingdao 266000, China;
    3. Shengli Oil Field Central Hospital. Bingzhou 257000, China;
    4. Stomatology Hospital of Weihai. Weihai 264200, China.
  • Received:2017-08-31 Online:2018-01-28 Published:2018-01-26

PDF (PC)

202

被引次数

1

摘要： 目的:探讨不同基底冠设计对氧化锆全冠抗折强度的影响,以探索最佳的基底冠设计来提高氧化锆全冠的抗折性能。方法:设计并制作4组不同颈环高度的氧化锆冠,分别为:A组0.00 mm、B组1.00 mm、C组2.00 mm、D组颈环最高点为外形高点位置,每组7颗,万能试验机测试其断裂载荷,体式显微镜及扫描电子显微镜观察破损形态。结果:A、B、C、D四组断裂载荷均值分别为1.56 KN、1.83 KN、1.95 KN、2.27 KN,4组断裂载荷差异具有统计学意义,A、D组间差异具有统计学意义,其余组间差异无统计学意义。氧化锆全瓷冠破损方式为崩瓷及脱瓷,四组破损方式的构成比的差异无统计学意义。结论:基底冠的形态设计可以影响氧化锆全冠的抗折强度,且随着颈环高度的增加抗压强度呈增大趋势。

关键词: 氧化锆, 牙冠, 颈环, 抗折性能

Abstract: Objective: To explore the optimal design of the framework so that to improve the fracture strength of the zirconia crown. Methods: Four different framework designs based on the thickness of zirconia cervical collar were used: 0.00mm zirconia collar(Group A), 1.00mm (Group B), 2.00mm (Group C), and height of contour(Group D).There were 7 samples in each group. The universal test machine was used to test the fracture load. The damage shape was observed by the body type microscope and scanning electron micrographs. Results: Mean of fracture loads were 1.56KN for Group A, 1.83KN for Group B, 1.95KN for Group C, and 2.27KN for Group D. The fracture load of four groups showed a significant difference. Group A was significantly different from Group D. Damage shapes were crack and chipping. There was no significant difference in the composition ratio between four sets of damage shapes. Conclusion: The framework design can affect the fracture strength of the zirconia crown, and the more thick of zirconia collar, the higher fracture strength of zirconia crown.

Key words: Zirconia, Tooth crown, Cervical collar, Fracture strength

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