東京大学 · 歯学
Ebihara教授の研究室は、歯科根管治療における機械的変形や微小亀列の発生に注目し、特にニッケルチタンファイルの設計や運動法が根管形成時の根面への応力や微小亀列に与える影響を、画像診断技術（マイクロCT、SS-OCT、蛍光イメージング）を用いて精密に評価しています。また、熱処理によるファイルの柔軟性向上や、根管治療における非侵襲的評価手法の開発にも取り組んでいます。これらの研究は、治療の安全性と効率性の向上に貢献する画期的なアプローチです。
Figures are computed from collected data and may differ slightly.
Based on these preliminary data, canal shaping appears to cause apical microcracks regardless of the type of rotary instrument motion. Contrast-enhanced micro-CT was able to identify microcracks in roots.
Light-induced fluorescence after ALA exposure can differentiate between the different stages of premalignancy and malignancy. Its ability to differentiate between healthy tissue and early pathology is particularly interesting
Heat treatment of files might improve their flexibility, making them more effective for preparation of curved canals.
SS-OCT may represent a novel, noninvasive, noncontact and nonexposure alternative to the conventional methods used for assessing root fractures in teeth.
Under laboratory conditions using JIZAI instruments, a rotational speed of 500 rpm generated significantly lower maximum screw-in forces and torque values than rotational speed of 300 rpm. Continuous rotation and OTR motion performed similarly in shaping the canals.
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