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Effect of acidity of in-office bleaching gels on tooth sensitivity and whitening: a two-center double-blind randomized clinical trial

dc.contributor.authorLoguercio A.D.
dc.contributor.authorServat F.
dc.contributor.authorStanislawczuk R.
dc.contributor.authorMena-Serrano A.
dc.contributor.authorRezende M.
dc.contributor.authorPrieto M.V.
dc.contributor.authorCereño V.
dc.contributor.authorRojas M.F.
dc.contributor.authorOrtega K.
dc.contributor.authorFernandez E.
dc.contributor.authorReis A.
dc.date.accessioned2020-09-02T22:21:46Z
dc.date.available2020-09-02T22:21:46Z
dc.date.issued2017
dc.identifier10.1007/s00784-017-2083-5
dc.identifier.citation21, 9, 2811-2818
dc.identifier.issn14326981
dc.identifier.urihttps://hdl.handle.net/20.500.12728/5094
dc.descriptionObjectives: The study aimed to compare the tooth sensitivity (TS) and bleaching efficacy of two hydrogen peroxide gels with different pHs (acid pH [Pola Office, SDI] and the neutral pH [Pola Office+, SDI]) used for in-office bleaching. Materials and methods: Fifty-four patients from Brazil and Chile, with right superior incisor darker than A2, were selected for this double-blind, split-mouth randomized trial. Teeth were bleached in two sessions, with 1-week interval. Each session had three applications of 8 min each, according to the manufacturer’s instructions. The color changes were evaluated by subjective (Vita Classical and Vita Bleachedguide) and objective (Easy shade spectrophotometer) methods. Participants recorded TS with 0–10 visual analog scale. Color change in shade guide units (SGU) and ΔE was analyzed by Student’s t test (α = 0.05). The absolute risk and intensity of TS were evaluated by McNemar’s test and Wilcoxon-paired test, respectively (α = 0.05). Results: All groups achieved the same level of whitening after 30 days of clinical evaluation. The use of a neutral in-office bleaching gel significantly decreases the absolute risk of TS (28%, 95% CI 18–41) and intensity of TS when compared to the acid bleaching gel (absolute risk of 50%, 95% CI 37–63). Conclusion: The use of a neutral in-office bleaching agent gel produced the same whitening degree than an acid bleaching gel but with reduced risk and intensity of tooth sensitivity. Clinical significance: Clinicians should opt to use in-office bleaching with a neutral gel than an acid product because the former causes a significant lower risk and intensity of tooth sensitivity. © 2017, Springer-Verlag Berlin Heidelberg.
dc.language.isoen
dc.publisherSpringer Verlag
dc.subjectAcidic gel
dc.subjectIn-office bleaching
dc.subjectNeutral gel
dc.subjectTooth sensitivity
dc.subjectWhitening effectiveness
dc.subjecthydrogen peroxide
dc.subjecttooth bleaching agent
dc.subjectBrazil
dc.subjectchemically induced
dc.subjectchemistry
dc.subjectChile
dc.subjectclinical trial
dc.subjectcomparative study
dc.subjectcontrolled study
dc.subjectdentin sensitivity
dc.subjectdouble blind procedure
dc.subjectfemale
dc.subjectgel
dc.subjecthuman
dc.subjectmale
dc.subjectmulticenter study
dc.subjectpH
dc.subjectrandomized controlled trial
dc.subjecttooth discoloration
dc.subjecttreatment outcome
dc.subjectBrazil
dc.subjectChile
dc.subjectDentin Sensitivity
dc.subjectDouble-Blind Method
dc.subjectFemale
dc.subjectGels
dc.subjectHumans
dc.subjectHydrogen Peroxide
dc.subjectHydrogen-Ion Concentration
dc.subjectMale
dc.subjectTooth Bleaching Agents
dc.subjectTooth Discoloration
dc.subjectTreatment Outcome
dc.titleEffect of acidity of in-office bleaching gels on tooth sensitivity and whitening: a two-center double-blind randomized clinical trial
dc.typeArticle


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