摘要
目的对传统高速牙钻法、Carisolv(伢典)微创化学机械法、Er,Cr:YSGG激光法去腐后牙本质表面微观形态及去腐时间进行评估。方法 30颗根面龋患牙按不同去腐方法分为传统高速牙钻组(牙钻组)、Carisolv(伢典)微创化学机械组(机械组)和Er,Cr:YSGG激光组(激光组),每组各10颗牙。去龋过程中计时,去腐后观察牙本质表面。结果牙钻组与激光组去腐时间((6.8±1.2)min、(7.1±0.9)min)明显低于机械组((17.4±0.9)min)(P<0.05),牙钻组与激光组比较差异无统计学意义(P>0.05);扫描电镜下,牙钻组玷污层大量分布,牙本质小管栓塞率91.1%;机械组玷污层较少,牙本质小管栓塞率65.6%;激光组有极少量玷污层存在,牙本质小管栓塞率13.3%;3组栓塞率比较差异有统计学意义(P<0.05),其中激光组栓塞率最低。结论 Er,Cr:YSGG激光法去腐可高效去龋、清除牙本质玷污层。
Objective To explore the morphological changes in dental tissues of root caries treated by high speed drill, Carisolv chemo-mechanical caries removal and Er, Cr： YSGG laser methods, and to compare their working time for Carisolv caries removal. Methods Thirty extracted teeth with root caries were divided into three groups： high-speed drill group （drill group） , Carisolv chemo-mechanical caries removal group （mechanical group） and Er, Cr： YSGG laser group （laser group）, with 10 teeth in each group. The working time was recorded during treatment and the morphological changes were observed after caries removal. Results The working time was （6. 8 ± 1. 2） minutes in drill group, and （7.1±0.9） minutes in laser group, significantly lower than that in mechanical group （（17. 4± 0. 9） minutes） （P〈 0.05）, and there was no significant difference between drill group and laser group （P 〉 0.05）. Under electron microscopy, the smear layer was thicker and dentin tunule embolization rate was 91.1% in drill group, the smear layer was thin and the dentin tubule embolization rate was 65.6% in mechanical group, and there was no smear layer and the dentin tunule embolism rate was 13.3% in laser group. There were significant differences in embolism rate among these three groups （P〈0.05）, and the dentin tunule embolism rate was the lowest in laser group. Conclusions Er, Cr： YSGG laser is an effective way for caries removal and can clear the smear layer.
出处
《中华实用诊断与治疗杂志》
2014年第2期142-143,共2页
Journal of Chinese Practical Diagnosis and Therapy
基金
新疆医科大学2012年支撑学科建设项目(XYDXK50780323)
