Efficacy of a calcium-phosphate/fluoride varnish and ionomeric sealant on cervical dentin hypersensitivity: A randomized, double-blind, placebo-controlled clinical study.

Abstract

Dentin hypersensitivity (DH) is a common problem in the population that can have a significant impact on the quality of life of those who suffer from the condition. Compare the efficacy of two treatments for DH: Ca/PO4 - /F- varnish (Clinpro White Varnish) and ionomeric sealant (IS) (Clinpro XT Varnish) with a placebo. Participants (121) with at least one tooth with visual analogue scale (VAS) score of 4 and above were randomly and blindly allocated to the groups. Treatments were performed by a trained researcher. DH was evaluated by another blind researcher after the treatment and after 1week, 4weeks, 3months and 6months. After 4weeks, placebo received the DH treatment with IS; thus, the participants were not assessed after 3 and 6months. Primary outcome was DH reduction after 4weeks. Differences in VAS scores in the other time intervals and entire values of VAS were considered secondary outcomes. Comparisons were made among the groups (α=0.05). IS showed the highest VAS value difference between baseline and 4weeks (mean±SD: 3.7±2.2), differing significantly from placebo (2.3±1.7) and Ca/PO4/F- varnish (2.6±2.0). Ca/PO4- /F- varnish did not differ from placebo. In all time intervals, VAS values of all groups were significantly lower than the baseline value, without differences among groups. For the long-term differences in VAS values (3 and 6months), the IS exhibited significantly higher values than Ca/PO4- /F- varnish. The IS was the most efficacious product for reducing DH, whereas Ca/PO4- /F- varnish did not differ from placebo. Registered in ClinicalTrials.gov (NCT04591444).