カスタムスリーブパラメータの静的ガイド下歯内療法アクセスにおける影響:歯髄腔閉鎖における偏差制御
Anna Muryani1,2, Dudi Aripin2, Hendra Dian Adhita Dharsono2
1Doctoral Programme Faculty of Medicine, Universitas Padjadjaran, Bandung, West Java, Indonesia.
Clinical, cosmetic and investigational dentistry
|December 30, 2025
まとめ
カスタムジルコニアスリーブを用いた静的ガイド下歯内療法アクセス(SGEA)は、歯髄腔閉鎖(PCO)の治療において、自由手技アクセスと比較して精度が大幅に向上します。7mmジルコニアスリーブは最も高い精度を示し、歯内療法処置のリスクを低減しました。
背景:
- 歯髄腔閉鎖(PCO)は、根管狭窄のため歯内療法において重大な課題となります。
- 従来の自由手技アクセス(FHA)は、PCO症例において医原性エラーのリスクを高めます。
- 静的ガイド下歯内療法アクセス(SGEA)は、正確な根管アクセスを提供する可能性があります。
研究 の 目的:
- 様々な材料と高さのカスタムスリーブを用いた静的ガイド下歯内療法アクセス(SGEA)の精度を評価すること。
- シミュレートされた歯髄腔閉鎖(PCO)におけるSGEAと従来の自由手技アクセス(FHA)の精度を比較すること。
主な方法:
- CBCT、口腔内スキャナー、3Dプリンターを使用してシミュレートされたPCOを有する48個の樹脂製上顎切歯を用いたin vitro研究。
- サンプルは、FHA、チタン対照群、および3、5、7mmの高さのカスタムクロムコバルト(CoCr)およびジルコニアスリーブを使用した6つのSGEA群を含む8つのグループに分けられました。
- CBCTスキャンを使用して歯冠および矢状偏差を分析し、一元配置分散分析およびボンフェローニ検定で統計分析を行いました。
主要な成果:
- すべてのSGEA群は、FHA(p < 0.05)よりも有意に低い角度偏差を示しました。
- ジルコニア7mmスリーブ群は、最も低い平均歯冠偏差(1.83°)および矢状偏差(2.48°)を示しました。
- スリーブ高さの増加は角度精度を高め、ジルコニアはCoCrおよびチタンよりも優れた寸法安定性を示しました。
結論:
- SGEA技術は、PCOの根管穿孔におけるドリル偏差の制御において、FHAと比較して精度を大幅に向上させます。
- カスタム3Dプリントジルコニアスリーブ、特に7mmの高さは、閉鎖した根管における歯内療法アクセスに最適な精度を提供します。
- PCO治療におけるSGEAの臨床応用には、さらなるin vivoでの検証が推奨されます。
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