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根管长度电测法应用于慢性根尖周病治疗的研究

JOURNAL OF DENTAL PREVENTION AND TREATMENT(2003)

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Abstract
目的探讨慢性根尖周病治疗中根管长度电测法准确性.方法使用Y-Ⅲ牙科发声探针电测根管长度,试验组测量根尖阴影直径在3.00~5.00mm27颗牙,共30个根管.对照组根尖无阴影32颗牙,共35个根管.电测根管长度确定后,在牙椅旁即刻照X线片,然后测量X线片上根管锉与根尖平面关系.结果以X线片根尖平面为标准,电测根管长度误差范围在-1.00~+0.50mm的试验组有27个根管,符合率达90.00%.对照组有31个根管,符合率达88.57%.两组结果经统计学处理无显著性差异.结论根管长度电测法的准确性与根尖周的生物学特性关系不大,根管长度电测法不但适用于牙髓病,也适用于根尖周病.
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