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EFFECT OF THE USE OF VARNISHES WITH HIGH AND LOW FLUORIDE CONCENTRATION SUPPLEMENTED WITH TRIMETAPHOSPHATE ON EROSION AND ABRASION OF BOVINE DENTAL ENAMEL. IN VITRO STUDY.

Grant number: 09/03869-2
Support type:Scholarships in Brazil - Master
Effective date (Start): September 01, 2009
Effective date (End): February 28, 2011
Field of knowledge:Health Sciences - Dentistry - Pediatric Dentistry
Principal researcher:Alberto Carlos Botazzo Delbem
Grantee:Michele Mauricio Manarelli
Home Institution: Faculdade de Odontologia (FOA). Universidade Estadual Paulista (UNESP). Campus de Araçatuba. Araçatuba , SP, Brazil

Abstract

This study aimed to evaluate in vitro action varnishes with high and low concentration of fluorides and supplemented with trimetaphosphate about the erosion associated or not the abrasion. After polishing 360 bovine enamel blocks (4x4mm) will be selected by means of surface microhardness (SMH initial). Below will be divided into 12 groups (n=30) in accordance with the number of days of treatment (3 or 5 days) and type of vernish to be used: placebo (without fluorine), varnish NaF 5%, varnish NaF 2.5%, varnish NaF 2.5% TMP 3%, varnish NaF 2.5% TMP 5%, varnish NaF 2.5% TMP 10%. The blocks will suffer a single application of varnish, in a thin layer using a microbrush, in the first day of the study. Half of the blocks (n=180) will suffer a treatment for 3 days, the other half (n=180) will suffer a treatment for 5 days.These will remain in artificial saliva, 37ºC during the night preceding the beginning of the study, as well as before and after the treatments. The blocks will be submitted to the challenge acid with Sprite Zero® for 5 minutes 4 times a day for a period of 3 days and 5 days. Only the blocks will be submitted to the process of abrasion through brushing for 15 seconds using brush electric Colgate Motion® in slurry of placebo dentifrice. The statistical analysis will be applied considering as factors of variation varnishes experimental, the days of treatment and the type of erosive challenge (erosion and erosion/abrasion), and as variable the hardness values of surface before the challenges, the percentage of loss of hardness of surface (%SMHC) and wear of the enamel surface (µm).

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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)
MANARELLI, MICHELE MAURICIO; MORETTO, MARCELO JULIANO; SASSAKI, KIKUE TAKEBAYASHI; RODRIGUES MARTINHON, CLEIDE CRISTINA; PESSAN, JULIANO PELIM; BOTAZZO DELBEM, ALBERTO CARLOS. Effect of fluoride varnish supplemented with sodium trimetaphosphate on enamel erosion and abrasion. AMERICAN JOURNAL OF DENTISTRY, v. 26, n. 6, p. 307-312, . (09/03869-2, 09/16374-1)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
MANARELLI, Michele Mauricio. Efeito do uso de vernizes com alta e baixa concentração de fluoreto suplementado com trimetafosfato sobre a erosão e abrasão do esmalte dentário: estudo in vitro. 2011. Master's Dissertation - Universidade Estadual Paulista (Unesp). Faculdade de Odontologia. Araçatuba Araçatuba.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.