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In vitro study of the use of bioactive glass ceramics in caries-affected dentin natural or artificial: analysis of bond strength of composites

Grant number: 13/12215-1
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): October 01, 2013
Effective date (End): January 31, 2015
Field of knowledge:Health Sciences - Dentistry - Dental Materials
Principal Investigator:Fernanda de Carvalho Panzeri Pires de Souza
Grantee:Renata Costa de Morais
Host Institution: Faculdade de Odontologia de Ribeirão Preto (FORP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil


The aim of this in vitro study is to evaluate, through light emitting diode, the influence of the application of bioactive glass ceramics on the bond strength of adhesive systems with previous acid etching and caries-affected dentin, natural or artificial, compared to sound dentin. One hundred and twenty molars, 80 healthy and 40 decayed, will be selected, and 40 sound teeth will undergo artificial caries formation by pH cycling. After the planning of occlusal surfaces, the teeth will be separated into 4 groups (n = 10): Group 1 - etching, rinsing and drying application Biosilicate + + + composite adhesive system; Group 2 - same as Group 1 without Biosilicate; group 3 - application Biosilicate + + composite adhesive system; group 4 - same as group 3 without Biosilicate. After treatments, teeth restored with composite (Opallis - FGM). The teeth are stored in water at 37 ° C for 6 months and then sectioned perpendicular to the bonding interface, producing sticks (n = 20) of 0.9 mm thickness. The samples will be attached to a universal testing machine (EMIC DL 2000 to 0.5 mm / min) and subjected to microtensile test until fracture. After the tests, the fractures are observed in digital microscope (Keyence) and failure mode of the adhesive interface is evaluated by scanning electron microscopy (JSM 5410, Sony). The data obtained will be subjected to appropriate statistical test to analyze the results.

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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)
DE MORAIS, RENATA COSTA; SILVEIRA, RENATA ESPINDOLA; CHINELATTI, MICHELLE; GERALDELI, SAULO; PANZERI PIRES-DE-SOUZA, FERNANDA DE CARVALHO. Bond strength of adhesive systems to sound and demineralized dentin treated with bioactive glass ceramic suspension. CLINICAL ORAL INVESTIGATIONS, v. 22, n. 5, p. 1923-1931, . (13/12215-1)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
MORAIS, Renata Costa de. In vitro study of the use of bioactive glass ceramic in affected dentin by natural and artificial caries: analysis of composites\'s bond strength. 2015. Master's Dissertation - Universidade de São Paulo (USP). Faculdade de Odontologia de Ribeirão Preto (PCARP/BC) Ribeirão Preto.

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