部分無歯顎前部上顎におけるスプリットボーンブロック法を用いた3D垂直歯槽頂増大術:10年臨床研究
The International journal of periodontics & restorative dentistry
|February 4, 2026
まとめ
スプリットボーンブロック法を用いた垂直骨移植は、前部上顎に対して予測可能で長期的な安定性を提供します。この方法は、合併症を最小限に抑えながら有意な骨増量をもたらし、審美性とインプラントの成功率を高めます。
科学分野:
- 口腔外科、歯周病学、歯科インプラント学
背景:
- 垂直骨増強は、部分無歯顎前部上顎の審美的修復に不可欠です。スプリットボーンブロック(SBB)法は、自家骨を用いた垂直骨再建の方法を提供します。SBB法の長期転帰と安定性については、さらなる調査が必要です。
研究 の 目的:
- 審美的な前部上顎におけるスプリットボーンブロック法を用いた垂直自家骨移植の長期結果を評価すること。主な転帰(治癒合併症、垂直骨増量)を評価すること。骨増量の長期安定性とインプラント生存率を分析すること。
主な方法:
- 下顎外側斜面から採取した自家骨ブロックをスプリットし、SBB法を用いて移植しました。3ヶ月の間隔をおいてインプラントを挿入し、補綴修復を行いました。患者は少なくとも10年間追跡され、インプラント周囲骨吸収はX線写真で評価されました。
主要な成果:
- 210人の患者における229の移植部位を最長20年間追跡しました。平均垂直骨増量は8.33 mmで、10年後の吸収率は8.5%でした。合併症は低率(早期3%、後期1.7%)で、移植片喪失率は0.4%でした。インプラント生存率は高かったです。
結論:
- スプリットボーンブロック法は、前部上顎における垂直骨再建の予測可能性と長期的な体積安定性を示します。術前の口蓋粘骨膜弁を用いた軟組織増強は、治癒と審美性を向上させます。自家下顎骨ブロックは、安定した垂直骨増量を得るための信頼できる選択肢です。
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