超音波洗浄後の根管充填に関する走査電顕的研究 : 第 1 報 Lateral condensation method と Vertical condensation method の評価

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The state of root canal obturation at various portions of the canal after the use of ultrasonic vibration for root canal irrigation was examined in this study. Ten extracted human teeth were used and the canals were filled by two methods, lateral condensation method (LCM) and vertical condensation method (VCM). Degree of canal obturation and reaching of the gutta-percha to the apical seat were examined on radiograms and obturation of various portions of the canal (mid-canal, apical third, and root apex) was observed by scanning electron microscope. The results were as follows : 1. On radiograms, obturation was good at the mid-canal portion in four cases out of five cases. At the apicai third and root apex portions, obturation was good in all cases for LCM. For VCM, obturation was good at mid-canal portion in three cases out of five cases. At the apical third and root apex portions, obturation was good in four cases. 2. Reaching of the gutta-percha to apical seat was "flush" in four cases out of five cases and one case was "under" for LCM. For VCM, the cases varied widely with cases of "flush", "over" and "under". 3. Scanning electron microscopically, obturation was rather poor or poor at the mid-canal and apical third portions in many cases for both LCM and VCM. At the root apex portion, obturation was good in four cases, and rather poor in one case for LCM. For VCM, obturation was good in one case, and rather poor or poor in four cases.
九州歯科学会の論文
1988-06-25

超音波洗浄後の根管充填に関する走査電顕的研究 : 第 1 報 Lateral condensation method と Vertical condensation method の評価

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