Effect of 2% Chlorhexidine Digluconate on the Bond Strength to Normal Versus Caries-affected Dentin

被引:81
作者
Komori, P. C. P.
Pashley, D. H. [1 ]
Tjaderhane, L. [2 ,3 ]
Breschi, L. [4 ,5 ]
Mazzoni, A. [6 ]
de Goes, M. F.
Wang, L. [7 ]
Carrilho, M. R. [8 ,9 ]
机构
[1] Med Coll Georgia, Sch Dent, Dept Oral Biol, Augusta, GA 30912 USA
[2] Univ Oulu, Inst Dent, Oulu, Finland
[3] Oulu Univ Hosp, Oulu, Finland
[4] Univ Trieste, Dept Biomed, Unit Dent Sci & Biomat, Trieste, Italy
[5] CNR, Unit Bologna, IOR, IGM, I-40126 Bologna, Italy
[6] Univ Bologna, Dept SAU&FAL, Bologna, Italy
[7] Univ Sao Paulo, Dept Operat Dent Dent Mat & Endodont, Bauru Sch Dent, Bauru, SP, Brazil
[8] Univ Sao Paulo, GEO Bandeirante, Sao Paulo, Brazil
[9] Univ Estadual Campinas, Dept Restorat Dent, Piracicaba Sch Dent, Dent Mat Area, Piracicaba, SP, Brazil
基金
芬兰科学院;
关键词
TOTAL-ETCH ADHESIVES; MATRIX METALLOPROTEINASES; IN-VIVO; CARIOUS DENTIN; SELF-ETCH; HYBRID LAYER; DEGRADATION; RESINS; LESIONS; COLLAGENASE;
D O I
10.2341/08-55
中图分类号
R78 [口腔科学];
学科分类号
100302 [口腔临床医学];
摘要
This study evaluated the effect of 2% chlorhexidine digluconate (CHX) used as a therapeutic primer on the long-term bond strengths of two etch-and-rinse adhesives to normal (ND) and caries-affected (CAD) dentin. Forty extracted human molars with coronal carious lesions, surrounded by normal dentin, were selected for this study. The flat surfaces of two types of dentin (ND and CAD) were prepared with a water-cooled high-speed diamond disc, then acidetched, rinsed and air-dried. In the control groups, the dentin was re-hydrated with distilled water, blot-dried and bonded with a three-step (Scotchbond Multi-Purpose-MP) or two-step (Single Bond 2-SB) etch-and-rinse adhesive. In the experimental groups, the dentin was rehydrated with 2% CHX (60 seconds), blot-dried and bonded with the same adhesives. Resin composite build-ups were made. The specimens were prepared for microtensile bond testing in accordance with the non-trimming technique, then tested either immediately or after six-months storage in artificial saliva. The data were analyzed by ANOVA/Bonferroni tests (alpha=0.05). CHX did not affect the immediate bond strength to ND or CAD (p>0.05). CHX treatment significantly lowered the loss of bond strength after six months as seen in the control bonds for ND (p<0.05), but it did not alter the bond strength of CAD (p>0.05). The application of NIP on CHX-treated ND or CAD produced bonds that did not change over six months of storage.
引用
收藏
页码:157 / 165
页数:9
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