根管充填に関する走査電顕的研究 : 第 2 報 Thermomechanical condensation method の評価

概要

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The fitness of root canal obturation by the thermomechanical condensation method was examined with use of ten extracted human teeth. The obturated condition of root canal and reaching of the guttapercha to the apical seat were examined first on radiograms. Then each root was cut up and divided into three parts of mid-canal, apical third and root apex, and observed by scanning electron microscopy. The results were as follows : 1. On radiograms, obturation was good at the mid-canal portion in nine cases out of ten cases. At the apical third and root apex portions, obturation was good in eight cases out of ten cases. 2. Reaching of the guttapercha to apical seat was "flush" in eight cases out of ten cases and two cases were "over". 3. Scanning electron microscopically, obturation was good at the mid-canal portion in six cases out of ten cases and four cases were rather poor or poor. At the apical third and root apex portions, obturation was good in four cases out of ten cases and six cases were rather poor or poor.
九州歯科学会の論文
1988-04-25