摘要
目的:研究氢氧化钙根管消毒剂的使用对根尖封闭能力的影响。方法:60个离体单根管前牙,随机分为4组,第1组和第2组不使用根管消毒剂,第3组和第4组使用氢氧化钙根管消毒剂。第1组和第3组用K锉联合生理盐水冲洗处理根管;第2组和第4组用K锉联合170g/LEDTA+10g/L次氯酸钠液冲洗处理根管。4组均采用冷牙胶侧方加压技术进行根管充填,染料渗入法测量根尖微渗漏值,评价各组根尖封闭能力。结果:使用氢氧化钙根管消毒剂的根尖封闭能力显著大于不使用根管消毒剂(P<0.05)。使用不同的冲洗剂结合K锉去除氢氧化钙根管消毒剂对根管微渗漏无明显影响(P>0.05)。结论:氢氧化钙根管消毒剂的使用可增强根尖封闭能力。
AIM：To investigate the effect of calcium hydroxide paste as root canal disinfectant on the apical sealing ability.METHODS：Sixty extracted single-root canal anterior teeth were randomly divided into four groups.The calcium hydroxide paste was used in Group 3 and Group 4,but not in Group 1 and Group 2.The root canals were enlarged with K file and flushed with normal saline （NS） in Group 1 and Group 3,and with 170g/L EDTA plus 10g/L sodium hypochlorite （NaClO） in Group 2 and Group 4.All 60 root canals were filled by cold lateral condensation technique.Apical microleakage was determined by using dye penetration test,and measured by stereomicroscope.RESULTS：The samples with calcium hydroxide paste have better apical sealing ability than the samples without calcium hydroxide paste （P=0.0051）.There is no statisticall difference in microleakage between samples with two different techniques of medication removal （P0.05）.CONCLUSION：Calcium hydroxide paste can increase the apical sealing ability.
出处
《牙体牙髓牙周病学杂志》
CAS
北大核心
2010年第4期213-215,共3页
Chinese Journal of Conservative Dentistry
基金
上海市科学技术委员会资助项目(08DZ2271100)
关键词
氢氧化钙
染料渗入法
根尖封闭能力
calcium hydroxide
dye penetration measurement
apical sealing ability
