| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
Removal of smear layer and opening of dentinal tubules on root canal surface with root canal irrigation is important factor on good convalescence of root canal treatment. Regarding the root canal irrigation, it was showed that combination of EDTA and NaOCl with ultrasonic was effective in removing the smear layer on permanent teeth, and NaOCl with ultrasonic was effective on primary teeth.
This study investigated ion diffusion from calcium hydroxide (Ca(OH)2) through the root dentin of extracted human teeth. It was suggested that the smear layer removal and opened dentinal tubules by root canal irrigation with ultrasonic was valid for the alkaline diffusion from Ca(OH)2 to outer root surface. Moreover, it was showed that calcium ion diffused to the outer root surface from root canal. Therefore, it was suggested that the good condition with smear layer removal and opened dentinal tubules by root canal irrigation facilitated the effectiveness of Ca(OH)2 as the root canal medication.
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