根管充填に関する走査電顕的研究(第 1 報)

概要

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The state of root canal obturation at various portions of the canal was examined in this study. Ten extracted human teeth were used and the canals were filled by two methods, the lateral condensation method (LCM) and vertical condensation method (VCM). Degree of canal obturation and reaching of the guttapercha point 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 microscopy. The results were as follows : 1. On radiograms, obturation was poor at the mid-canal portion in many cases for both LCM and VCM. At the apical third and root apex portions, obturation was good except for one case of VCM. 2. Reaching of the guttapercha point varied widely with cases of "flush", "over" and "under" for LCM. For VCM, the cases were either "flush" or "under". 3. Scanning electron microscopically, obturation was rather poor or poor at the midcanal and apical third portions in many cases for both LCM and VCM. At the root apex portion, obturation was good in two cases, and poor in one case for LCM. For VCM, all cases were good.
九州歯科学会の論文
1987-12-25