追加光固化の効果は,単色レジンの複合材料の色安定性および変換度に影響する
Fatih Bedir1, Muhammet Karadaş1, Makbule Gamze Atıcı Bedir2
1Department of Restorative Dentistry, Faculty of Dentistry, Recep Tayyip Erdogan University, Rize 53020, Türkiye.
Polymers
|February 13, 2026
まとめ
モノシェード樹脂複合材料は,マルチシェードタイプと比較して色の安定性が低下し,変換が低下しています. 追加の光固化は,複合材料のいずれのタイプでも色の安定性や変換度 (DoC) を改善しません.
科学分野:
- 歯科材料 科学 科学 歯科材料
- ポリマー化学のポリマー化学について
背景:
- 樹脂複合材料は,修復歯科で広く使用されています.
- モノシェード複合材料は,シンプルなシェードマッチングを提供しますが,長期的な性能には評価が必要です.
- 光固化パラメータは,樹脂複合材料の特性に大きな影響を与えます.
研究 の 目的:
- モノシェードおよびマルチシェード樹脂複合材料の色の安定性および変換度 (DoC) に対する追加の光固化の効果を評価する.
- 単色複合材料の色安定性を,異なる光固化条件下での多色複合材料と比較するために.
- 光固化装置と放射線レベルが樹脂複合材料の性能に与える影響を評価する.
主な方法:
- モノシェード (オムニクロマ/OC,ヴィトラ APS ユニック/VU) とマルチシェード (Clearfil Majesty ES-2/CME) の複合材料の66個の円盤状のサンプルが作成されました.
- 試料は,異なる照射レベル (800-1400 mW/cm2) でクォーツ・タングステン・ハロゲン (QTH) またはライト・エミッティング・ダイオード (LED) ユニットを使用して固化されました.
- カラー安定性 (CIEDE2000 カラー変化, ∆E00; ホワイトネス指数変化, ΔWI<0xE1><0xB5><0x80>) と DoC は,追加の光固化となく,コーヒー浸漬の28日後に測定されました.
主要な成果:
- モノシェード複合材料は,マルチシェード複合材料と比較して,著しく低いDoCと高い∆E00とΔWI<0xE1><0xB5><0x80>値を示した.
- モノシェード複合材料の色と白さの変化は,臨床的に受け入れられなかった.
- 磨き直す前と後に行われた追加の光固化は,色/白さの安定性やコンポジットタイプのDOCを向上させなかった.
結論:
- モノシェード樹脂複合材料は,マルチシェード複合材料と比較して劣った色安定性と変換度を示しています.
- 試験された追加の光固化プロトコルは,単色彩または多色彩樹脂複合材料の色彩安定性またはDoCを向上させません.
- 臨床医は,修復用途におけるモノシェード複合材料の長期的な色安定性制限を考慮する必要があります.
キーワード:
ATR-FTIRは,ATR-FTIRと一致している.CIEDE 2000 サイデ 2000 サイデ サイデライト・カリング・ユニットポリメリゼーションによるポリメリゼーションホワイトネス・インデックス (Whiteness Index) とはさらに関連する動画
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