腸骨による下顎骨再建後にハイドロオキシアパタイトか粒を用いて絶対的歯槽堤形成を行った１症例

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  • A case of ridge extension with hydroxyapatite particles on the reconstructed jaw.

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A new method of ridge extension using hydroxyapatite particles is described. This method was applied to a patient who received transplanted iliac bone after the resection of gingival carcinoma. Ridge extension using autogenous bone has the disadvantage of possible resorption neccessitating further surgery. Hydroxyapatite however, is not absorbed and was therefore selected as being suitable for ridge extension. There are various types of hydroxyapatite ie porous particular, dense particular, porous block and dense block types.<BR>Block type is most suitable for alveolar process formation, but perforation is a frequent problem. Porous particular type resists infection due to of discharging particle individually. Alveolar process formation is difficult, and suitable methods for the application of hydroxyapatite particles to the resected and reconstructed jaws have yet to be found.<BR>We report a new method of ridge extension using hydroxyapatite particles, obtaining satisfactory results even in a unfavorable cases.

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