| Budget Amount *help |
¥4,355,698 (Direct Cost: ¥3,350,537、Indirect Cost: ¥1,005,161)
Fiscal Year 2010: ¥585,698 (Direct Cost: ¥450,537、Indirect Cost: ¥135,161)
Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2008: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Research Abstract |
A cause of alveolar bone absorption of mandibular premolar was investigated using three dimensional finite element models with and without alveolar bone absorption.
For model weighted from lingual side without alveolar bone absorption, zone of stress concentration was found in central part of neck and corner of mesial or distal direction of the tooth. However, for model weighted from lingual side with alveolar bone absorption, stress concentration was not found. Also, for models weighted from buccal side and mesial or distal directions, stress concentration was not found.
Therefore, alveolar bone absorption is caused by compressing stress from lingual side load.
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