Influence of chlorhexidine digluconate on the clinical performance of adhesive restorations: A 3-year follow-up
Abstract
Objectives
The
aim of this clinical study was to evaluate the long-term clinical
performance of non-carious Class V restorations with and without
application of chlorhexidine digluconate to acid-etched dentine.
Methods
After
the approval of the Ethics and Informed Consent Committee, 70
non-carious cervical lesions were selected and randomly assigned into
two groups, according to the split mouth design. The control group was
restored with a two-step etch-and-rinse adhesive (Adper Single Bond 2)
following manufacturer's instructions; whereas in the experimental group
2% chlorhexidine digluconate solution was applied to acid etched
dentine for 30 s after etching and prior to the adhesive application.
All lesions were restored with a nanofilled composite resin (Filtek
Supreme XT) and polymerized with a light-curing unit operating at
600 mW/cm2. Clinical performance was recorded after 1 week,
6, 12, and 36 months using modified Ryge/USPHS criteria in terms of
retention, marginal discoloration, marginal integrity, post-operative
sensitivity, and secondary caries incidence. Data were analyzed using
Chi-Square, Fisher's exact test and McNemar tests (α = .05).
Results
After
36 months the control group showed a success rate of 88% in comparison
to 76% of experimental group; however, no statistically difference
between them was found (p = .463). Moreover, no statistical
differences were observed between groups in the criteria post-operative
sensitivity, marginal discoloration, marginal integrity, and secondary
caries incidence between the two groups.
Conclusion
The
addition of 2% chlorhexidine digluconate conditioning step does not
improve the clinical durability of adhesive restorations.
Comments