Evaluation of the effect of cigarette smoke on the physical and chemical properties of the enamel and dentin and bond strength to resin composite using different adhesive systems

• Grant number: 13/15225-8
• Support Opportunities: Scholarships in Brazil - Master
• Start date: October 01, 2013
• End date: February 28, 2015
• Field of knowledge: Health Sciences - Dentistry - Dental Clinics
• Principal Investigator: Flávio Henrique Baggio Aguiar
• Grantee: Jessica Dias Theobaldo
• Host Institution: Faculdade de Odontologia de Piracicaba (FOP). Universidade Estadual de Campinas (UNICAMP). Piracicaba , SP, Brazil

Abstract

The present project will be divided in two studies. The aim of Study 1 will be to evaluate the influence of smoke (1 pack of cigarettes per 5 days) and pH cycling (30 day cycle) on chemical composition and microhardness of surface and sub-surface of dental substrate. For that, 40 bovine incisors fragments (enamel and dentin) will be divided into 4 groups (n = 10) according to the following: G1 - without any treatment (control group), G2 - exposure to cigarette smoke, G3 - exposure to pH cycling; and G4 - exposure to smoke and pH cycling. After that, the samples will be analyzed by EDS and microhardness test. The aim of Study 2 will be to evaluate the influence of cigarette smoke in tooth-restoration bond strength. Samples of bovine incisors enamel and samples of bovine incisor dentin will be divided into 8 groups (n=10) per substrate, according to adhesive systems (ScotchbondTM Multi-Purpose - 3M ESPE, Single Bond 2 - 3M ESPE; Clearfil SE Bond - Kuraray; and Single Universal Bond - 3M ESPE) and smoke exposure (no exposure; exposure to 1 pack per day for 5 days). Samples will be restored with a microhybrid composite Filtek Z250 (3M Espe) and the bond strength will be evaluated by microtensile test in dentin and microshear test in enamel. Results will be analyzed statistically at pre-set alpha of 0.05. (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)

THEOBALDO, JESSICA D.; VIEIRA-JUNIOR, WALDEMIR F.; CATELAN, ANDERSON; MAINARDI, MARIA DO CARMO A.; YSNAGA, ORLANDO A.; RODRIGUES-FILHO, UBIRAJARA P.; MARCHI, GISE ELLMARIA; LIMA, DEBORA A.; AGUIAR, FLAVIO H. B.. Effect of Heavy Metals Contamination from Cigarette Smoke on Sound and Caries-Like Enamel. Microscopy and Microanalysis, v. 24, n. 6, p. 762-767, DEC 2018. (13/15225-8)

THEOBALDO, J. D.; CATELAN, A.; RODRIGUES-FILHO, U.; MARCHI, G. M.; LIMA, D. A. N. L.; AGUIAR, F. H. B.. Effect of Cigarette Smoke on Resin Composite Bond Strength to Enamel and Dentin Using Different Adhesive Systems. Operative Dentistry, v. 41, n. 3, p. E57-E63, MAY-JUN 2016. (13/15225-8)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

THEOBALDO, Jessica Dias. Effect of cigarette smoke on the physical and chemical properties of the enamel and dentin and bond strength to resin composite using different adhesive systems. 2015. Master's Dissertation - Universidade Estadual de Campinas (UNICAMP). Faculdade de Odontologia de Piracicaba Piracicaba, SP.