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


Autoria(s): KOMORI, P. C. P.; PASHLEY, D. H.; TJADERHANE, L.; BRESCHI, L.; MAZZONI, A.; GOES, M. F. de; WANG, L.; CARRILHO, M. R.
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

19/10/2012

19/10/2012

2009

Resumo

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.

CNPq[473164/2007-8]

CNPq[300615/2007-8]

Academy of Finland[111724]

NIDCR[R01 DE014911]

Identificador

OPERATIVE DENTISTRY, v.34, n.2, p.157-165, 2009

0361-7734

http://producao.usp.br/handle/BDPI/26152

10.2341/08-55

http://dx.doi.org/10.2341/08-55

Idioma(s)

eng

Publicador

OPERATIVE DENTISTRY INC

Relação

Operative Dentistry

Direitos

restrictedAccess

Copyright OPERATIVE DENTISTRY INC

Palavras-Chave #TOTAL-ETCH ADHESIVES #MATRIX METALLOPROTEINASES #IN-VIVO #CARIOUS DENTIN #SELF-ETCH #HYBRID LAYER #DEGRADATION #RESINS #LESIONS #COLLAGENASE #Dentistry, Oral Surgery & Medicine
Tipo

article

original article

publishedVersion