レーザーアブレーション法による薄層HA コーティングインプラントの 骨結合強度：除去トルク値による評価

DOI 参考文献26件
  • 小幡 登
    大阪歯科大学口腔インプラント科 近畿・北陸支部（小幡歯科クリニック）
  • 由良 博
    大阪歯科大学口腔インプラント科
  • 本津 茂樹
    近畿大学大学院生物理工学研究科
  • 中村 真一
    大阪歯科大学口腔インプラント科
  • 岡崎 定司
    大阪歯科大学欠損歯列補綴咬合学講座

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  • A Torque Removal Study on the Primary Stability of Implants with Hydroxyapatite Thin Film Grown by Pulsed Laser Deposition

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Objective: Since the hydroxyapatite film of hydroxyapatite-coated implants fabricated using plasma spraying is thick and shows low crystallinity, its in vivo fracture or detachment due to factors such as occlusal force has been reported. Therefore, these implants are not widely used at present.<br/> Methods: To improve this situation, our research group developed implants coated with a thin hydroxyapatite film (thickness ＜1 μm) employing a laser ablation method (pulse laser deposition technique: PLD). In this study, the bone-bonding strength of implants coated with a thin hydroxyapatite film produced using PLD was evaluated in dogs.<br/> Results: A longitudinal increase both in the removal torque of implants coated with a thin hydroxyapatite layer and titanium implants was recognized by two-way analysis of variance (ANOVA)(p＜0.01). There were significant differences between the removal torque of implants coated with a thin hydroxyapatite layer and titanium implants, and the removal torque of implants coated with a thin hydroxyapatite layer 12 weeks after placement was significantly higher than that of titanium implants (p＜0.05) .<br/> Conclusion: The results suggest that thin-layer hydroxyapatite can contribute to the fixation after implant placement, allowing early loading.

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