Influence of daily usage times on patients’ compliance during at-home bleaching: a randomized clinical trial

Author(s)

Caio César PAVANI ^[1] ; Ticiane Cestari FAGUNDES ^[2] ; Daniel SUNDFELD ^[3] ; Gabriela Cristina SANTIN ^[4] ; Lucas Silveira MACHADO ^[5] ; André Pinheiro de Magalhães BERTOZ ^[6] ; Timm Cornelius SCHOTT ; Renato Herman SUNDFELD ^[8]

Affiliation

^[1] Universidade Estadual Paulista. Faculdade de Odontologia de Araçatuba. Departamento de Odontologia Preventiva e Restauradora - Brasil

^[2] Universidade Estadual Paulista. Faculdade de Odontologia de Araçatuba. Departamento de Odontologia Preventiva e Restauradora - Brasil

^[3] Centro Universitário Uningá. Departamento de Odontologia Restauradora e Prótese Dentária - Brasil

^[4] Universidade Estadual de Maringá. Departamento de Odontologia - Brasil

^[5] Universidade Federal do Rio Grande do Sul. Faculdade de Odontologia. Departamento de Odontologia Conservadora - Brasil

^[6] Universidade Estadual Paulista. Faculdade de Odontologia de Araçatuba. Departamento de Odontologia Preventiva e Restauradora - Brasil

^[8] Universidade Estadual Paulista. Faculdade de Odontologia de Araçatuba. Departamento de Odontologia Preventiva e Restauradora - Brasil

• Document type: Journal article
• Source: Journal of Applied Oral Science; v. 31, 2023-10-09.

Abstract

Abstract The effectiveness of at-home dental bleaching treatments depends on the time that bleaching products are in contact with the teeth surface and, consequently, on the adequate use of associated custom acetate trays. Objective This randomized single-blinded trial aimed to analyze if the daily usage time of these products influences the patient’s compliance behavior when submitted to monitored at-home dental bleaching. Secondary outcomes were color change and tooth sensitivity. Methodology Sixty-six volunteers were randomly distributed into three groups (n=22): patients were instructed to use the trays for 2 (G2), 4 (G4), and 8 (G8) hours daily. The daily dental bleaching compliance behavior was measured using a microsensor inserted into the trays. Subjective and objective color evaluation assessments were adopted at baseline (T0), one (T1), two (T2), and three weeks (T3) after the beginning of the bleaching treatment, as well as two weeks after the treatment (T4). Tooth sensitivity was analyzed using the VAS scale, ranging from T1 to T4. Results G2 showed a greater degree of cooperation than G8 and cooperation was inversely proportional to the recommended usage time. Significantly higher color change was observed in the upper arch for G8 when compared to G2 in subjective analysis, from T1 to T4. There were no statistical differences between the groups in objective analysis. Conclusion Shorter recommended usage time of the bleaching product may improve the patient's compliance with at-home dental bleaching treatments. However, increased daily usage time may promote better subjective color change. Bleaching sensitivity was more significant in the first week for a longer time of use. (AU)

• FAPESP's process: 17/03483-3 - Randomized clinical evaluation and digital monitoring of patients submitted to home dental bleaching: effect of wear-time of dental bleaching on the degrees of collaboration and patient satisfaction, on the effectiveness and occurrence of sensitivity
• Grantee: Caio César Pavani
• Support Opportunities: Scholarships in Brazil - Master