前磨牙邻面板固位全瓷粘接桥修复的应用研究

doi:10.7518/hxkq.2019.03.011

华西口腔医学杂志 ›› 2019, Vol. 37 ›› Issue (3): 285-289.doi: 10.7518/hxkq.2019.03.011

前磨牙邻面板固位全瓷粘接桥修复的应用研究

李鑫^1,²,朱智敏¹,李紫嫣¹,周进茹¹,陈文川¹()

1.口腔疾病研究国家重点实验室国家口腔疾病临床医学研究中心四川大学华西口腔医院修复科,成都 610041
2.南京医科大学附属口腔医院南苑门诊部,南京 210029

收稿日期:2018-03-22 修回日期:2019-03-18 出版日期:2019-06-01 发布日期:2019-06-12
通讯作者: 陈文川 E-mail:hxkqcwc@scu.edu.cn
作者简介:李鑫,住院医师,硕士,E-mail:994328060@qq.com

All-ceramic premolar guiding plate retains resin-bonded fixed partial dentures

Xin Li^1,²,Zhimin Zhu¹,Ziyan Li¹,Jinru Zhou¹,Wenchuan Chen¹()

1.State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
2.Nanyuan Outpatient Department, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China

Received:2018-03-22 Revised:2019-03-18 Online:2019-06-01 Published:2019-06-12
Contact: Wenchuan Chen E-mail:hxkqcwc@scu.edu.cn

摘要/Abstract

摘要：

目的探究IPS e.max Press玻璃基铸造陶瓷和WIELAND氧化锆陶瓷邻面板固位粘接桥修复下颌第二前磨牙缺失的抗折性能及模拟短期使用后的修复效果。方法选取成人离体下颌第一前磨牙和第一磨牙各32颗,体外建立下颌第二前磨牙缺失模型。随机分为4组（n=8）,E0组:IPS e.max Press铸瓷粘接桥;E1组:IPS e.max Press铸瓷粘接桥+30万次机械循环加载;W0组:WIELAND氧化锆全瓷粘接桥;W1组:WIELAND氧化锆全瓷粘接桥+30万次机械循环加载。万能测试机测试各实验组的破坏载荷力值。结果机械循环加载后试件均无松动或脱落,无明显裂纹。万能测试机测试结果:E0、E1、W0、W1组破坏载荷分别为（1 242.85±260.11）、（1 062.60±179.98）、（1 650.85±206.77）、（1 167.61±265.50） N,均大于下颌第二前磨牙所受最大力（360 N）,差异有统计学意义（P<0.001）。E0组破坏载荷小于W0组（P<0.05）。循环加载后,E1组和W1组间差异无统计学意义（P>0.05）。循环加载后,铸瓷组（E1、E0）破坏载荷变化不显著（P>0.05）,氧化锆组（W0、W1）明显降低（P<0.05）。结论 IPS e.max Press铸瓷和WIELAND氧化锆全瓷邻面板固位粘接桥修复下颌第二前磨牙缺失均能够获得良好的抗折性能,短期修复效果满意。

关键词: 全瓷, 邻面板, 粘接桥, 破坏载荷

Abstract:

Objective This study aims to investigate the fracture resistance and short-term restorative effects of resin-bonded fixed partial dentures (RBFPDs) made from heat-pressed lithium-disilicate-based glass-ceramic (IPS e.max press) and zirconia ceramic (WIELAND) and retained by all-ceramic guiding plates when used to restore missing mandibular second premolars. Methods A total of 64 human mandibular first premolars and first molars were prepared as abutments, then were randomly divided into 4 groups (n=8): E0, heat-pressed ceramic RBFPDs, no cyclic loading; E1, heat-pressed ceramic RBFPDs exposed to 300 000 cycles of dynamic loading; W0, zirconia ceramic RBFPDs, no cyclic loading; and W1, zirconia ceramic RBFPDs exposed to 300 000 cycles of dynamic loading. Fracture strength was tested in a universal testing machine. Results The medians of fracture strength were 1 242.85 N±260.11 N (E0), 1 650.85 N±206.77 N (W0), 1 062.60 N±179.98 N (E1), and 1 167.61 N±265.50 N (W1). Statistical analysis showed that all the groups exhibited significantly higher fracture strength compared with the maximum bite force in the premolar region (360 N; P<0.001). The W0 group had significantly higher fracture strength than the E0 group (P<0.05). Meanwhile, no significant difference in fracture strength was observed between the E1 and W1 groups (P>0.05). Significant statistical differences were found between the zirconia ceramic groups (W0 and W1, P<0.05) but not between the glassceramic groups (E0 and E1, P>0.05) after dynamic loading. Conclusion- The RBFPDs retained by all-ceramic guiding plates exhibited promising fracture properties and optimal short-term restorative effects when used to restore missing mandibular second premolars.

Key words: all-ceramic, guiding plate, resin-bonded fixed partial dentures, fracture load

中图分类号:

R783.3

李鑫,朱智敏,李紫嫣,周进茹,陈文川. 前磨牙邻面板固位全瓷粘接桥修复的应用研究[J]. 华西口腔医学杂志, 2019, 37(3): 285-289.

Xin Li,Zhimin Zhu,Ziyan Li,Jinru Zhou,Wenchuan Chen. All-ceramic premolar guiding plate retains resin-bonded fixed partial dentures[J]. West China Journal of Stomatology, 2019, 37(3): 285-289.

图/表 5

参考文献 16

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前磨牙邻面板固位全瓷粘接桥修复的应用研究

All-ceramic premolar guiding plate retains resin-bonded fixed partial dentures

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