The effect of endodontic irrigants on the microtensile bond strength of dentin adhesives.
BACKGROUND
The purpose of this study was to evaluate the microtensile bond strength of a total etch (XP-Bond) and a self-etch (Clearfil SE Bond) adhesive system to dentine surfaces treated using endodontic irrigants.


METHODS
Twenty-four freshly extracted third molars were used. After creating a smear layer on the coronal midthird portion of the crowns, the teeth were divided into three groups and surfaces were irrigated with distilled water, 5.25% NaOCl + 17% EDTA, and 1.3% NaOCl + BioPure MTAD, respectively. Each group was divided into two subgroups, and a self-etching adhesive and an etch-and-rinse adhesive were applied respectively. The teeth were restored with a composite material and sectioned to produce sticks for microtensile bond testing.


RESULTS
The microtensile bond strength of the MTAD + Clearfil SE group was found to be significantly lower than the microtensile bond strength of the distilled water + Clearfil SE Bond group and the NaOCl, EDTA, + Clearfil SE Bond group (p = 0.0001, p = 0.009).


CONCLUSIONS
Because of the significant reduction of Clearfil SE Bond to coronal dentine after MTAD application, an etch-and rinse adhesive such as XP-Bond may be preferred if this irrigant has been chosen during endodontic treatment.
Yurdagüven
Haktan
H
Department of Operative Dentistry, Yeditepe University, Istanbul, Turkey.
Tanalp
Jale
J
Toydemir
Burcu
B
Mohseni
Kambiz
K
Soyman
Mübin
M
Bayirli
Gündüz
G
D000134:Acid Etching, Dental / Q000379:methods; D001840:Dental Bonding; D003799:Dental Stress Analysis; D003804:Dentin / Q000187:drug effects; D003806:Dentin Permeability; D017220:Dentin-Bonding Agents; D006801:Humans; D008422:Materials Testing; D019279:Resin Cements; D012388:Root Canal Irrigants / Q000494:pharmacology; D013718:Tensile Strength
C438313:Clearfil SE Bond; D017220:Dentin-Bonding Agents; D019279:Resin Cements; D012388:Root Canal Irrigants; C532387:XP-Bond