中药洁尔阴冲洗剂用于超声波根管清理的扫描电镜观察

目的:评价中药冲洗剂洁尔阴用于超声根管冲洗的清理效果。方法:将20颗离体单根管牙随机分成4组:生理盐水组、3.33%洁尔阴组、30%洁尔阴组和2.5%次氯酸钠(NaClO)组。超声根管预备后,用15#锉在根管内不贴管壁超声冲洗清理10s,用扫描电镜观察根管内壁颈、中、尖部位的清洁程度,并进行ANOVA分析及Bonferroni检验。结果:在根管颈部,30%洁尔阴的清理能力与2.5%次氯酸钠相似(P>0.05),显著优于3.33%洁尔阴(P<0.01)和生理盐水组(P<0.05),且30%洁尔阴在根管颈部的清理能力又显著好于中、尖部(P<0.01)。在根管中部,各组之间无显著差异(P>0.05)。在根尖部,2.5%次氯酸钠的清洁程度显著好于生理盐水组(P<0.05)。3.33%洁尔阴与生理盐水之间各部位均无显著差异。结论:30%洁尔阴、2.5%次氯酸钠超声根管冲洗液在根管颈部的清洁能力较强,3.33%洁尔阴、生理盐水清理能力较差。

Scanning electron microscopic study on the use of traditional Chinese medical irrigant in ultrasonic root canal instrumentation

PURPOSE:To evaluate the cleaning ability of traditional Chinese medicine Jieeryin used as ultrasonic root canal irrigant.METHODS:A total of 20 extracted human single-rooted teeth were divided into 4 groups:normal saline,3.33% Jieeryin,30%Jieeryin and 2.5% sodium hypochlorite.After ultrasonic root canal preparation a 15#-K type ultrasonic file was inserted into the root canal without contacting the root canal wall and the ultrasonic irrigation was kept for 10 seconds.The cleaning of the cervical,middle and apical thirds of the root canal walls was evaluated by scanning electron microscope.The data were analyzed statistically by ANOVA and Bonferroni test.RESULTS:The cleaning ability of 30% Jieeryin was similar to that of 2.5% NaClO(P>0.05)in the cervical third,and it was significantly better than 3.33% Jieeryin(P<0.01)and normal saline(P<0.05).There was significant difference between the cervical third and the middle or apical thirds(P<0.01)of 30% Jieeryin.There was no significant difference between the four groups in the middle third(P>0.05).In the apical third,2.5% NaClO was significantly better than normal saline(P>0.05).No significant difference was found between 3.33% Jieeryin and saline in all thirds.CONCLUSION:Cleaning by 30% Jieeryin or 2.5% NaClO with ultrasonic technique was superior compared to the cleaning by 3.33% Jieeryin or normal saline in the cervical third.