摘要
目的评价机用镍钛器械与声波手机根管预备过程中冲洗液及碎屑溢出根尖情况。方法选取2012年10月至2014年1月在中国医科大学附属口腔医院口腔外科门诊因正畸治疗需要或牙周炎症拔除的单根管离体牙(长度与弯曲度相近)40颗作为研究样本,随机分为Pro Taper组(使用机用Pro Taper镍钛锉进行根管预备)和Sonic handpiece组(使用MM1500声波手机及其配套的Rispisonic和Shaper锉进行根管预备),并将离体牙安装到碎屑及液体收集装置。在根管预备过程中每换用一号器械时,用1 m L次氯酸钠溶液进行根管冲洗,用EP管收集根尖溢出冲洗液及碎屑,称重;恒温箱内干燥5 d后再次称重。比较两组根尖冲洗液及碎屑溢出情况。结果根尖冲洗液溢出量的中位数:Pro Taper组为116.24 mg,Sonic handpiece组为13.76 mg,两组差异有统计学意义(P<0.05)。根尖碎屑溢出量的中位数:Pro Taper组为4.87 mg,Sonic handpiece组为0.63 mg,两组差异有统计学意义(P<0.05)。结论使用声波手机在根管预备时产生的根尖冲洗液及碎屑溢出均明显少于使用机用镍钛器械;声波手机具有较好的临床应用前景。
ObjectiveTo evaluate and compare the amount of debris and irrigant extrusion quantitatively by using rotary nickel-titanium（Ni-Ti）instrument and sonic handpiece in root canal preparation.MethodsForty freshly extracted human teeth were selected,which were with single canals（having similar canal length and curvature）due to orthodontics therapy and periodontitis in Department of Oral and Maxillofacial Surgery of China Medical University Stomatology Hospital during October 2012 to January 2014.They were separated into two groups based on Ni-Ti instruments Pro Taper and sonic handpiece and mounted in a debris collection apparatus.After each instrument change,1 m L of Na Cl O was used as the irrigant and the amount of irrigant extruded was measured by EP tube.The EP tube was weighed using an electronic microbalance to determine its weight.After drying in an incubator for five days,the EP tube was weighed again.Compare the amount of debris and irrigant extrusion quantitatively.ResultsThe median of the amount of irrigant：in the group of Pro Taper it was 116.24 mg;in the group of sonic handpiece it was 13.76 mg.The rotary Ni-Ti instrumentation techniques extruded significantly more irrigant than sonic handpiece（P 0.05）.The median of the amount of debris：in the group of Pro Taper it was 4.87 mg;in the group of sonic handpiece it was 0.63 mg.The rotary Ni-Ti instrumentation techniques extruded significantly more debris than sonic handpiece（P 0.05）.ConclusionThe sonic handpiece extrudes significantly less irrigant and debris than the rotary Ni-Ti instrumentation techniques.It has a good clinical application prospects.
出处
《中国实用口腔科杂志》
CAS
2015年第7期419-422,共4页
Chinese Journal of Practical Stomatology
关键词
碎屑溢出
冲洗液溢出
根管预备
根管冲洗
debris extrusion
irrigant extrusion
root canal preparation
root canal irrigation
