|
|
- 2018
基底冠形态设计对氧化锆全冠抗折强度的影响
|
Abstract:
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
| [1] | Lorenzoni FC,Martins LM,Silva NR,et al.Fatigue life and failure modes of crowns systems with a modified framework design [J]. J Dent,2010,38(8)∶626-634 |
| [2] | Luthardt RG,Holzhüter MS,Rudolph H,et al.CAD/CAM-machining effects on Y-TZP zirconia [J]. Dent Mater,2004,20(7)∶655-662 |
| [3] | 郑迎秋,郭晓瑨,王健,等.口腔氧化锆纳米粉体的制备及性能研究[J].口腔医学研究,2017,33(3)∶331-335 |
| [4] | Sailer I,Pjetursson BE,Zwahlen M,et al. A systematic review of the survival and complication rates of all-ceramic and metal-ceramic reconstructions after an observation period of at least 3 years. Part Ⅱ:Fixed dental prostheses [J]. Clin Oral Implants Res,2007,18(Suppl3)∶86-96 |
| [5] | Miura S,Kasahara S,Yamauchi S,et al. Clinical evaluation of zirconia-based all-ceramic single crowns: an up to 12-year retrospective cohort study [J]. Clin Oral Investig,2017∶ |
| [6] | Augstin-Panadero R,Fons-Font A,Roman-Rodriguez JL,et al.Zirconia versus metal:a preliminary comparative analysis of ceramic veneer behavior [J]. Int J Prosthodont,2012,25(3)∶294-300 |
| [7] | 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].中华口腔医学研究杂志,2008,4∶347-351 |
| [8] | 王慧媛,付强,张春光,等.边缘形式对大面积缺损第一磨牙髓腔固位冠应力分布的影响[J].口腔医学研究,2015,31(11)∶1121-1124 |
| [9] | 肖凌,巢永烈 氧化锆全瓷修复体崩瓷的主要原因探讨[J].国际口腔医学杂志,2013,40(2)∶195-198 |
| [10] | Sailer I,Feher A,Filser F,et al. Prospective clinical study of zirconia posterior fixed partial dentures:3-year follow-up [J]. Quintessence Int,2006,37(6)∶685-693 |
| [11] | Preis V,Letsch C,Handel G,et al. Influence of substructure design, veneer application technique, and firing regime on the in vitro performance of molar zirconia crowns [J]. Dent Mater,2013,29(7)∶e113-21 |
| [12] | Cho HY,Won HY,Choe HC,et al.Fracture characteristics of dental ceramic crown according to zirconia coping design [J]. Procedia Engineering,2011,10(12)∶1561-1566 |
| [13] | 周新文,刘希云 颈环高度对CAD /CAM 氧化锆全瓷冠抗压碎性能的影响[J].实用口腔医学杂志,2014,32(2)∶161-164 |
| [14] | Bonfante EA,da Silva NR,Coelho PG,et al.Effect of framework design on crown failure [J]. Eur J Oral Sci,2009,117(2)∶194-199 |
