Efficacy of desensitizing agents on postoperative sensitivity following an in-office vital tooth bleaching: A randomized controlled clinical trial

Abstract

Aim:To assess and compare the incidence and intensity of experienced after an in-office vital tooth bleaching in case of dental fluorosis using two different types of desensitizing agents, at different time periods.Materials and Methods:Sixty-nine subjects with mild-to-moderate fluorosis were randomly divided into three groups of 23 each. Group I — control group (placebo), group II—potassium nitrate 5% and sodium monofluorophosphate 0.7% (Sensodent KF), and group III—Casein Phosphopeptide-Amorphous Calcium Phosphate (CPP-ACP) (Tooth Mousse). In-office vital tooth bleaching was done using 35% hydrogen peroxide liquid (Pola office) in two sessions. Desensitizing agent was applied for 10 min after each session. Postoperative sensitivity was recorded after 24 h and 7 days. The statistical analysis was done using chi-square test, analysis of variance (ANOVA), and post hoc Tukey's test.Results:The experimental groups showed significantly less incidence and intensity of sensitivity compared to control group, whereas there was no difference between them.Conclusion:The desensitizing agents used in the study show effective reduction after an in-office vital tooth bleaching.

Effects of in-office bleaching agent combined with different desensitizing agents on enamel

“…6 In an attempt to decrease or limit dental sensitivity during bleaching, a number of different desensitizing agents have been introduced for use before or after bleaching or in association with bleaching gels. 7 These components are added in the bleaching gel to prevent demineralization of the enamel during bleaching and the decrease in dental sensitivity reported by many patients during and after bleaching treatment. 8 However, there are conflicting reports about the effects of bleaching agents on alterations of the surface morphology and chemical properties of dental tissues.…”

Conservative esthetic management of severe dental fluorosis with in-office power bleaching

“…studied the effect of “descending light intensity protocol (high intensity, followed by moderate and finally low intensity)” on post-bleaching sensitivity and found lower sensitivity with this protocol as compared to conventional “high light intensity protocol.”[ 19 ] Desensitizing agents may be used after bleaching to reduce post-bleaching sensitivity. [ 20 ]…”

Comparative clinical efficacy of four different desensitising agents in relieving post-bleaching sensitivity

“…(12) A calibrated examiner (RK) who is blinded about the study groups recorded tooth sensitivity perceived by the patient by using the air-blast technique as per the ADA recommended guidelines (13) also used in previous studies. (14) Scores given were:  0 = Absence of pain, but perceiving stimulus.  1 = Slight pain (mild sensitivity).…”

“…(25) So, far as literature search revealed, no study has ever simultaneously evaluated four different commercially available desensitizing dentifrices, to the best of our knowledge and extensive literature search. Furthermore unlike other studies, (14) the subjects enrolled in ours were specifically instructed to use the same agent which was designated to them.…”