摘要
目的探讨自行研制的氧化锆陶瓷固位钉用于前牙切角缺损修复的疗效。方法选择临床前牙切角缺损病例80例,其中活髓牙36例,死髓牙已行根管治疗44例,随机分为两组,每组40例,实验组采用CAD/CAM氧化锆陶瓷固位钉加树脂联合修复,对照组采用树脂直接充填修复,定期随访,观察其临床修复效果。结果 1年随访,实验组成功36例,失败3例,失访1例,成功率92.3%;对照组成功20例,失败18例,失访2例,成功率52.6%。两组之间比较有显著性差异(P<0.01)。结论在切角缺损修复过程中,氧化锆陶瓷固位钉可明显增强复合树脂的固位,是一种新型牙本质固位钉。
We used CAD/CAM technique to manufacture zirconia ceramic pin. 80 cases with incisal cornar defect of anterior teeth were cho- sen,36 with vital pulp teeth and 44 with nonvital teeth after root caral therapy. Then,we used these pins in combination with resin to restore the incisal corner defect of 40 anterior teeth,and they were grouped as the experimental group. Composite resins without pins were applied to restore the incisal corner defects of the other 40 anterior teeth and they were used as the control group. Clinical effects were observed accord- ing to termly follow-ups. Results After one-year follow-up,36 cases in experimental group were successful,3 cases failed and one case was missed in the follow-up.20 cases in the control group were successful,18 cases failed and 2 cases were missed in the follow-up. There was a significant difference in the success rates between the pin group （92. 3% ） and control group （52. 6% ） （P 〈0. 01 ）. Conclusions During in- cisal comer defect restoration,the zirconia ceramic pin can significantly enhance the retention capacity of composite resin,and it is considered as a kind of novel and useful dentin pin.
出处
《口腔医学》
CAS
2012年第12期731-733,共3页
Stomatology
基金
2011年江苏省卫生厅医学重点人才项目(RC2011140)
2011年江苏高校优势学科建设工程资助项目(2011-0137)
关键词
氧化锆陶瓷
固位钉
切角缺损
zirconia ceramic
pin
incisal corner defect
