Chan Stephanie, Abbott Paul V
UWA Dental School, The University of Western Australia, Perth, Australia.
Aust Endod J. 2025 Aug;51(2):267-274. doi: 10.1111/aej.12937. Epub 2025 Mar 24.
The aim was to compare the effectiveness of acids in removing MTA from root canals. Fifty acrylic blocks were filled with MTA and divided into groups - 10% hydrochloric acid; 10% citric acid; 2% acetic acid; 2% carbonic acid and 20% tartaric acid. MTA was removed with the acids, plus ultrasonic tips and rotary files. Outcomes were measured as pre- and post-operative weight differences, luminance differences and working time to regain length or form ledges. Weight differences varied significantly - citric acid was highest; hydrochloric acid was lowest and others were not statistically different from each other. Luminance did not differ significantly between groups but varied significantly with distance from the apex - hydrochloric acid and carbonic acid were lowest at 1 mm from the apex. Working times differed significantly - hydrochloric acid took longer than other acids except citric acid. Overall, the most effective acid was citric acid. The least effective was hydrochloric acid.
目的是比较不同酸在从根管中去除MTA方面的有效性。五十个丙烯酸块填充有MTA，并分为几组——10%盐酸；10%柠檬酸；2%乙酸；2%碳酸和20%酒石酸。使用这些酸，外加超声尖和旋转锉来去除MTA。结果通过术前和术后的重量差异、亮度差异以及恢复长度或形成台阶的工作时间来衡量。重量差异有显著变化——柠檬酸最高；盐酸最低，其他酸之间无统计学差异。各组之间亮度无显著差异，但随距根尖距离有显著变化——盐酸和碳酸在距根尖1毫米处最低。工作时间有显著差异——盐酸除比柠檬酸外比其他酸耗时更长。总体而言，最有效的酸是柠檬酸。最无效的是盐酸。
