Effect of dentin pretreatment on shear bond strength of three resin-based luting cements

Year 2018, Volume: 52 Issue: 2, 82 - 88, 01.05.2018

Nihal Berke Bulut Gülümser Evlioğlu Bilge Gökçen Röhlig Tamer Çelakıl

Abstract

DOI: 10.26650/eor.2018.449

Purpose

The aims of this study were; to compare the
shear bond strength values of resin-based luting cements using etch-and-rinse,
self-etching or self-adhesive techniques and to evaluate the effects of
pretreatment with 0.2%, and 2% chlorhexidine (CHX) solutions on the bonding
stability to dentin.

Materials and methods

Ninety specimens were divided into 9 groups
of equal sample size (0.2% CHX, 2% CHX and no CHX application groups).
Variolink N (multi-step etch-and-rinse technique), Panavia F2.0 (self-etching
technique), or RelyX U200 (self-adhesive technique) resin-based luting cement
was applied. All specimens were subjected to shear bond strength test (SBS)
after bonding procedure. The mode of failure was analyzed by using a
stereomicroscope.

Results

There were no significant differences among
study groups for the dentin treatment factor. However, for luting cement
factor, significant differences were found and Variolink N showed the highest
SBS values.

Conclusion

CHX application has no immediate effect on
the SBS values of any resin cements. Despite the development of simplified
cementation techniques, etch-and-rinse technique is still the most reliable
technique because of its high bond strength to dentin.

Keywords

RelyX U200; Panavia-F 2.0; Variolink; chlorhexidine; shear strength

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