Effect of Chlorhexidine concentrations on micro-shear bond strength of self-etch adhesive to normal and caries-affected dentin

Enas H. Mobarak, Dalia I. El-Korashy, David H. Pashley

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Purpose: To evaluate the effect of different Chlorhexidine concentrations on bond strength of resin composite to normal and caries-affected dentin using a self-etch primer adhesive. Methods: Thirty carious human molars were ground to expose flat dentin surfaces containing caries-affected surrounded by normal dentin. The teeth were divided into three groups. One group received no Chlorhexidine pretreatment (control). The second and third groups received 2% or 5% Chlorhexidine pretreatments, respectively before applying the self-etch primer adhesive (Clearfil SE Bond). Resin composite was applied to caries-affected dentin and to normal dentin on the same tooth with the aid of polyethylene tubes (0.9 mm diameter and 0.7 mm height). For micro-shear bond strength testing, each tooth was secured in a specially designed attachment jig to hold the specimens to the universal testing machine. Load was applied by the testing machine through a wire loop adjusted to the bonded interface at a crosshead speed of 0.5 mm/minute. Micro-shear bond strength was calculated and mode of failure was examined with a x40 stereomicroscope. Results: Statistical analysis revealed insignificant differences between control, 2% and 5% Chlorhexidine pretreatment for normal as well as for caries-affected dentin groups. Also, there were insignificant differences in bond strength values between normal and caries-affected dentin for each treatment modality. Adhesive failure was the most common mode or failure.

Original languageEnglish (US)
Pages (from-to)217-222
Number of pages6
JournalAmerican Journal of Dentistry
Volume23
Issue number4
StatePublished - Aug 1 2010

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Shear Strength
Chlorhexidine
Dentin
Adhesives
Tooth
Composite Resins
Polyethylene
Reference Values

ASJC Scopus subject areas

  • Dentistry(all)

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Effect of Chlorhexidine concentrations on micro-shear bond strength of self-etch adhesive to normal and caries-affected dentin. / Mobarak, Enas H.; El-Korashy, Dalia I.; Pashley, David H.

In: American Journal of Dentistry, Vol. 23, No. 4, 01.08.2010, p. 217-222.

Research output: Contribution to journalArticle

Mobarak, Enas H. ; El-Korashy, Dalia I. ; Pashley, David H. / Effect of Chlorhexidine concentrations on micro-shear bond strength of self-etch adhesive to normal and caries-affected dentin. In: American Journal of Dentistry. 2010 ; Vol. 23, No. 4. pp. 217-222.
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