循环加载对全解剖式二氧化锆冠抗压强度的影响
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摘要
目的观察循环加载对全解剖式二氧化锆冠抗压强度的影响。方法制作18个标准左侧下颌第一磨牙的金属代型,利用CAD/CAM技术分别制作出对应的18个全锆冠。用3M玻璃离子将制作完成的18个全锆冠分别黏固于相应金属代型上。随机分成3组,每组6个。将A组和B组全锆冠分别固定在生物力学试验机上进行循环加载,加载频率为8Hz,循环次数为300 000次,其中A组加载力为300N,B组加载力为500N。随后将18个试件按顺序依次置于万能试验机上测试其抗压强度,记录数值。应用SPSS 21.0软件对实验所得的数据进行统计学分析。结果各组全冠的抗压强度比较差异无统计学意义(P>0.05)。结论使用不同力值对全锆冠进行300 000次循环加载对其抗压强度无明显影响。
Objective To evaluate and compare the resistance level of full-contour zirconia crowns under cyclic loading. Methods A computer aided design and computer aided manufacturing(CAD/CAM)system was used to prepare 18 full-contour zirconia crowns of the mandible first molar.All the crowns were bonded to the metal dies using 3 M glass ionomer cement and were randomly divided into A,B,C groups,each group with six.Group A and group B was respectively fixed on the biomechanical test machine for cyclic loading,with a frequency of8 Hz,300 000 cycles.The loading force of group A was 300 N,and group B was 500 N.The compressive strength were measured by the universal testing machine.Used SPSS 21.0 software to analyze the data.Results There were no statistical significant differences between two groups(P>0.05).Conclusion Using different force for 300 000 cycles on the zirconium crown load had no significant effect on its resistance to compressive strength.
Objective To evaluate and compare the resistance level of full-contour zirconia crowns under cyclic loading. Methods A computer aided design and computer aided manufacturing(CAD/CAM)system was used to prepare 18 full-contour zirconia crowns of the mandible first molar.All the crowns were bonded to the metal dies using 3 M glass ionomer cement and were randomly divided into A,B,C groups,each group with six.Group A and group B was respectively fixed on the biomechanical test machine for cyclic loading,with a frequency of8 Hz,300 000 cycles.The loading force of group A was 300 N,and group B was 500 N.The compressive strength were measured by the universal testing machine.Used SPSS 21.0 software to analyze the data.Results There were no statistical significant differences between two groups(P>0.05).Conclusion Using different force for 300 000 cycles on the zirconium crown load had no significant effect on its resistance to compressive strength.
引文
[1]李东健,温兴涛,任柏林,等.不同类型全冠修复体抗折性能和失效模式的研究[J].口腔颌面修复学杂志,2015,16(6):339-343.
[2]郝妍,廉云敏,付强,等.肩台宽度对全解剖式二氧化锆冠压缩破坏力的影响[J].实用口腔医学杂志,2017,33(4):451-454.
[3] Cuiling L,Xu G,Yuping Q,et al.Influence of different designs and porcelain/glaze firing on the marginal and internal fit of implant-supported zirconia crowns[J].Hua Xi Kou Qiang Yi Xue Za Zhi,2016,34(1):63-67.
[4]朱黎黎.不同牙合面厚度及锆材对全解剖式二氧化锆冠抗压强度的影响[D].石家庄:河北医科大学,2015.
[5]李东健,周珊羽,温兴涛,等.冠厚度对全锆修复体抗折性能和失效模式的影响[J].口腔颌面修复学杂志,2016,17(2):107-110.
[6]方科达,丁鑫,周慧,等.CAD/CAM个性化瓷基台的体外力学性能研究[J].牙体牙髓牙周病学杂志,2017,27(1):22-27.
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[8]辛志强,梁锐英,杨春侠.3种氧化锆全瓷冠修复后牙5年临床效果评价[J].河北医科大学学报,2016,37(2):158-160,170.
[9] Ali SA,Karthigeyan S,Deivanai M,et al.Zirconia Properties and Application-A Review[J].Pakistan Oral&Dental Journal,2014,49(1):645-650.
[10]赵海丹,胡宇平,张春宝,等.牙科氧化锆陶瓷材料循环疲劳性能的实验研究[J].牙体牙髓牙周病学杂志,2013,23(5):344-348.
[11]王琪.基于有限元的全瓷冠力学仿真研究[D].天津:河北工业大学,2014.
[12] Hayashi M,Sugeta A,Takahashi Y,et al.Static and fatigue fracture resistances of pulpless teeth restored with post-cores[J].Dent Mater,2008,24(9):1178-1186.
[13]王强,尹娇娇,杨华哲.口腔修复材料氧化锆生物陶瓷的制备方法及应用进展[J].中国组织工程研究,2016,20(21):3178-3184.
[14]叶颖,邸萍,贾胜男,等.个别正常牙合牙尖交错位的最大牙合力绝对值及其牙位分布的横断面研究[J].中华口腔医学杂志,2015,50(9):536-539.
[15]张骏,赵克,王勤琴,等.不同直径压头对磨牙e.max全瓷冠失效模式的影响[J/CD].中华口腔医学研究杂志:电子版,2008,2(4):347-351.
[16] Qasim T,Ford C,Bush MB,et al.Margin failures in brittle dome structures:relevance to failure of dental crowns[J].J Biomed Mater Res B Appl Biomater,2007,80B(1):78-85.
[17]周威,张磊,李萌,等.全瓷冠疲劳强度可靠性及各随机参数的分析研究[J].临床口腔医学杂志,2010,26(8):457-459.
[18]龚旭,赵信义,张春宝,等.2种牙科氧化锆陶瓷材料的弯曲强度可靠性和亚临界裂纹扩展研究[J].实用口腔医学杂志,2015,31(5):611-614.
[19]伊远平,张少锋,郭嘉文,等.长石质和氟磷灰石饰瓷在模拟咀嚼循环条件下耐磨性能的研究[J].牙体牙髓牙周病学杂志,2015,25(2):84-89,124.
[2]郝妍,廉云敏,付强,等.肩台宽度对全解剖式二氧化锆冠压缩破坏力的影响[J].实用口腔医学杂志,2017,33(4):451-454.
[3] Cuiling L,Xu G,Yuping Q,et al.Influence of different designs and porcelain/glaze firing on the marginal and internal fit of implant-supported zirconia crowns[J].Hua Xi Kou Qiang Yi Xue Za Zhi,2016,34(1):63-67.
[4]朱黎黎.不同牙合面厚度及锆材对全解剖式二氧化锆冠抗压强度的影响[D].石家庄:河北医科大学,2015.
[5]李东健,周珊羽,温兴涛,等.冠厚度对全锆修复体抗折性能和失效模式的影响[J].口腔颌面修复学杂志,2016,17(2):107-110.
[6]方科达,丁鑫,周慧,等.CAD/CAM个性化瓷基台的体外力学性能研究[J].牙体牙髓牙周病学杂志,2017,27(1):22-27.
[7] Takeichi T,Miura S,Kasahara S,et al.Update zirconia restorations[J].J Prosthodont Res,2015,59(2):81-83.
[8]辛志强,梁锐英,杨春侠.3种氧化锆全瓷冠修复后牙5年临床效果评价[J].河北医科大学学报,2016,37(2):158-160,170.
[9] Ali SA,Karthigeyan S,Deivanai M,et al.Zirconia Properties and Application-A Review[J].Pakistan Oral&Dental Journal,2014,49(1):645-650.
[10]赵海丹,胡宇平,张春宝,等.牙科氧化锆陶瓷材料循环疲劳性能的实验研究[J].牙体牙髓牙周病学杂志,2013,23(5):344-348.
[11]王琪.基于有限元的全瓷冠力学仿真研究[D].天津:河北工业大学,2014.
[12] Hayashi M,Sugeta A,Takahashi Y,et al.Static and fatigue fracture resistances of pulpless teeth restored with post-cores[J].Dent Mater,2008,24(9):1178-1186.
[13]王强,尹娇娇,杨华哲.口腔修复材料氧化锆生物陶瓷的制备方法及应用进展[J].中国组织工程研究,2016,20(21):3178-3184.
[14]叶颖,邸萍,贾胜男,等.个别正常牙合牙尖交错位的最大牙合力绝对值及其牙位分布的横断面研究[J].中华口腔医学杂志,2015,50(9):536-539.
[15]张骏,赵克,王勤琴,等.不同直径压头对磨牙e.max全瓷冠失效模式的影响[J/CD].中华口腔医学研究杂志:电子版,2008,2(4):347-351.
[16] Qasim T,Ford C,Bush MB,et al.Margin failures in brittle dome structures:relevance to failure of dental crowns[J].J Biomed Mater Res B Appl Biomater,2007,80B(1):78-85.
[17]周威,张磊,李萌,等.全瓷冠疲劳强度可靠性及各随机参数的分析研究[J].临床口腔医学杂志,2010,26(8):457-459.
[18]龚旭,赵信义,张春宝,等.2种牙科氧化锆陶瓷材料的弯曲强度可靠性和亚临界裂纹扩展研究[J].实用口腔医学杂志,2015,31(5):611-614.
[19]伊远平,张少锋,郭嘉文,等.长石质和氟磷灰石饰瓷在模拟咀嚼循环条件下耐磨性能的研究[J].牙体牙髓牙周病学杂志,2015,25(2):84-89,124.