电刀排龈法与二次排龈法临床效果的对比研究

Contrast study on the clinical effects of electrosurgical retraction and secondary gingival retraction

目的:观察和对比电刀排龈法与二次排龈法在固定修复中的临床效果。方法:金属烤瓷冠桥修复患者36例68颗牙齿随机分为两组,分别采用二次排龈法和电刀排龈法完成排龈,制取印模,灌制工作模型。对排龈时间及排龈后的预备体肩台、牙龈状况、工作模型进行评价。结果:33颗牙齿采用二次排龈法,25颗达到满意标准,8颗未达到满意标准,满意率75.8%;35颗采用电刀排龈法,28颗达到满意标准,7颗未达到满意标准,满意率80.0%。两种排龈方法的排龈时间有显著统计学差异,排龈效果没有统计学差异。结论:电刀排龈法操作简便,易于暴露清晰的软硬组织界限,能得到满意的排龈效果,且术后恢复快,是一种较好的排龈方法,值得在临床推广和应用。

Objective： To observe and compare the clinical effects of electrosurgical retraction and secondary gingival retraction in fixed prosthodontics. Methods ： 68 teeth of 36 patients undergoing crown and bridge restoration were randomly distributed into 2 groups. Secondary gingival retraction and electrosurgical retraction were adopted to perform gingival retraction, take impression in sequence and make master cast respectively. Then, the time of gingival retraction and shoulder of preformed teeth, gingival condition and master cast were evaluated after gingival retraction. Results： 25 of 33 teeth performed with secondary gingival retraction reached satisfactory level,while 8 teeth were unsatisfactory ,with the satisfactory rate of 75.8%. 28 of 35 teeth performed with electrosurgical retraction were satisfactory,but 7 teeth were not satisfactory ,with the satisfactory rate of 80.0% . Time of gingival retraction by this two methods showed significant statistical difference,while the effects have no statistical difference. Conclusion： Electrosurgical retraction is a relatively good way of gingival re- traction and worthy of clinical application because of easy and simple handling, easy exposure of clear dividing line between soft and hard tissue, satisfactory effects of gingival retraction, and quick recovery after surgery.