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イオン放出性修復材料の健全歯質および齲蝕象牙質への接着強さ.
Bond strength of Ion-releasing Restorative Materials to Sound and Caries-affected Dentin.
PMID: 33690825 DOI: 10.17796/1053-4625-45.1.6.
抄録
目的:
本研究では,イオン放出性修復材の健全歯質およびう蝕象牙質に対する微小引張接着強さ(μTBS)を評価した.
OBJECTIVE: This study evaluated the microtensile bond strength (μTBS) of ion-releasing restorative materials to sound and caries-affected dentin (CAD).
研究デザイン:
60本の歯を無作為に2群(健全象牙質,CAD)に分け,従来のグラスアイオノマーセメント(GIC),レジン添加GIC(RMGIC),グラスハイブリッド強化GIC(EQ),ジオマー(BII),生体活性修復材(ACT)の5つのサブグループに分け,μTBS分析を行い,データを統計的に解析した.
STUDY DESIGN: 60 teeth were randomly divided into 2 groups (sound dentin, CAD) and 5 subgroups of 6 samples each: conventional glass ionomer cement (GIC), resin-modified GIC (RMGIC), glass hybrid reinforced GIC (EQ), giomer (BII), and bioactive restorative material (ACT). μTBS analyses were performed and data were analyzed statistically.
結果:
健全象牙質に接着したACT群とCADに接着したBII群が最も高いμTBSを示した(p<0.05)。GIC群,RMGIC群,ACT群では,CADに接着した場合,健全な象牙質と比較してμTBSが有意に低かった(p<0.05)。しかし,BII群では,健全な象牙質とCADに接着した試料の間に統計的に有意な差は認められなかった(p>0.05)。健全な象牙質に接着したEQを除くすべてのグループで,接着不良が優勢であった。
RESULTS: The ACT group bonded to sound dentin and the BII group bonded to CAD showed the highest μTBS (p<0.05). The GIC, RMGIC, and ACT groups, showed significantly lower μTBS when bonded to CAD compared with sound dentin (p<0.05). However, in the BII group, there were no statistically significant differences between the samples bonded to sound and CAD (p>0.05). All groups except EQ that bonded to sound dentin showed predominantly adhesive failure.
結論:
接着耐久性がより安定していることから,giomerの使用を推奨することができる.
CONCLUSION: The use of the giomer can be recommended due to its more stable bond durability.