In vivo purple led analysis on the color alteration, tooth sensitivity and mineral content of dental bleaching

• Grant number: 17/24847-3
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): February 01, 2018
• Effective date (End): December 31, 2018
• Field of knowledge: Health Sciences - Dentistry - Dental Clinics
• Principal Investigator: Vanessa Cavalli Gobbo
• Grantee: Erica Eiko Wada
• Host Institution: Faculdade de Odontologia de Piracicaba (FOP). Universidade Estadual de Campinas (UNICAMP). Piracicaba , SP, Brazil

Abstract

The aim of this study is to clinically evaluate the efficacy and safety of the purple LED, a novel technology launched in the dental market claimed by the manufacturers as a bleaching agent. For this purpose, sixty patients will be selected after analysis of inclusion and excluion criteria and will be tested using only the purple LED or the LED associated with hydrogen peroxide (HP) or carbamide peroxide (CP). The elected patients will be seen in the postgraduate clinic facilities of the Piracicaba Dental School and will be divided into three groups: 1) CP/LED, 2) HP/LED, 3) LED. The bleaching treatments will be analyzed regarding color change by means of a hand spectrophotometer (”E will be then calculated). Tooth sensitivity will be subjectively measured using a pain visual scale. Additionally, mineral content change will be evaluated by means of enamel microbiopsy, applying HCl 1,6 M in a protected area of the upper premolar (15). Afterwards, data obtained will be submitted to exploratory analysis and to the most adequate statistical test. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

KURY, MATHEUS; WADA, ERICA EIKO; PALANDI, SAMUEL DA SILVA; DAL PICOLO, MAYARA ZAGHI; GIANNINI, MARCELO; CAVALLI, VANESSA. Colorimetric evaluation after in-office tooth bleaching with violet LED: 6-and 12-month follow-ups of a randomized clinical trial. CLINICAL ORAL INVESTIGATIONS, v. 26, n. 1, JUL 2021. (17/08625-0, 17/24847-3, 17/23841-1)