A D Loguercio1,2, F Servat3, R Stanislawczuk3, A Mena-Serrano4, M Rezende5, M V Prieto6, V Cereño6, M F Rojas6, K Ortega6, E Fernandez6,7, A Reis5. 1. School of Dentistry, Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Parana, Brazil. aloguercio@hotmail.com. 2. Department of Restorative Dentistry, School of Dentistry, Faculdade de Odontologia, Universidade Estadual de Ponta Grossa, Rua Carlos Cavalcanti, 4748, São Paulo, CEP 84030-900, Brazil. aloguercio@hotmail.com. 3. School of Dentistry, Department of Restorative Dentistry, Center of Higher Education of Campos Gerais, Ponta Grossa, Brazil. 4. School of Dentistry, Department of Restorative Dentistry, Universidad de las Americas, Quito, Ecuador. 5. School of Dentistry, Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Parana, Brazil. 6. Department of Restorative Dentistry, School of Dentistry, School of Dentistry of Santiago, Universidad de Chile, Santiago, Chile. 7. Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Santiago, Chile.
Abstract
OBJECTIVES: 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.
RCT Entities:
OBJECTIVES: 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.
Authors: J L de Geus; M Rezende; L S Margraf; M C Bortoluzzi; E Fernández; A D Loguercio; A Reis; S Kossatz Journal: Oper Dent Date: 2014-12-23 Impact factor: 2.440
Authors: Thorsten M Auschill; Thorsten Schneider-Del Savio; Elmar Hellwig; Nicole B Arweiler Journal: Quintessence Int Date: 2012-09 Impact factor: 1.677
Authors: Laís G Bernardi; Michael W Favoreto; Taynara S Carneiro; Alexandra Mena-Serrano; Christiane P F Borges; Alessandra Reis; Alessandro D Loguercio Journal: Clin Oral Investig Date: 2022-07-01 Impact factor: 3.606