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Effect of different aging models on bond strength in sound and carious primary dentin

Grant number: 12/11846-5
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): September 01, 2012
Effective date (End): February 28, 2015
Field of knowledge:Health Sciences - Dentistry - Pediatric Dentistry
Principal Investigator:Daniela Prócida Raggio
Grantee:Ana Flávia Bissoto Calvo
Host Institution: Faculdade de Odontologia (FO). Universidade de São Paulo (USP). São Paulo , SP, Brazil


Studies that evaluate the longevity of bonding mechanism of the restorative materials in dentin after aging modelsare mainly performed in vitro , for at least six months. The aim of the present study will be to evaluate the bonding longevity of three restorative materials in sound and caries affected dentin submitted to both aging processes: six months in vitro after six months and using in situ model for 14 days. Deciduous second molars will be cut to obtain a parallel plain surface the oclusal face. Half of the teeth will be submitted to pH cycling artificial caries induction and the other half will be used sound. They will be randomly assigned in three groups according tothe restorative material: high viscous Glass of Ionomer Cement (GIC) (Ketac Molar Ketac" Easymix - 3M/ESPE), Resin Modified GIC (Vitremer® - 3M/ESPE) and composite resin associate to adhesive system (Z350" and Adper Scotchbond Multi Uso - 3M/ESPE). Each tooth will be sectioned in three parts and randomized in accordance with the aging procedure: Immediate GC- (control group); GV- aging in vitro for 6 months; GS- aging in situ for 14 days. Two cylinders of restorative material will be performed in each fragment. For the GS group, 10 volunteers use a palatal intra-oral device, with three sound dentin blocks and three caries affected at each side of the appliance. The volunteers will use the device all day, removing only for the dripping of sucrose 20% (8x/day) and during meals and cleaning, with non fluoridate dentifrice. After 14 days of experiment, the blocks will be collected and submitted to microshear test in universal testing machine. The data will be analyzed with ANOVA followed to Tukey test, if they show normal distribution.If they show non-normal distribution they will be submitted to Kruskal-Wallis test. The level of significance will be set in 5%.

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Scientific publications (4)
(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)
TEDESCO, TAMARA KERBER; BONIFACIO, CLARISSA CALIL; BISSOTO CALVO, ANA FLAVIA; GIMENEZ, THAIS; BRAGA, MARIANA MINATEL; RAGGIO, DANIELA PROCIDA. Caries lesion prevention and arrestment in approximal surfaces in contact with glass ionomer cement restorations - A systematic review and meta-analysis. International Journal of Paediatric Dentistry, v. 26, n. 3, p. 161-172, . (12/11846-5)
BISSOTO CALVO, ANA FLAVIA; KICUTI, ARIANE; TEDESCO, TAMARA KERBER; BRAGA, MARIANA MINATEL; RAGGIO, DANIELA PROCIDA. Evaluation of the relationship between the cost and properties of glass ionomer cements indicated for atraumatic restorative treatment. Brazilian Oral Research, v. 30, n. 1, . (12/11846-5)
TEDESCO, TAMARA K.; CALVO, ANA FLAVIA B.; DOMINGUES, GABRIELLE G.; MENDES, FAUSTO M.; RAGGIO, DANIELA P.. Bond Strength of High-Viscosity Glass Ionomer Cements is Affected by Tubular Density and Location in Dentin?. Microscopy and Microanalysis, v. 21, n. 4, p. 849-854, . (12/11846-5)
TEDESCO, TAMARA KERBER; TEIXEIRA ALVES, FABIANA BUCHOLDZ; LENZI, TATHIANE LARISSA; BISSOTO CALVO, ANA FLAVIA; REIS, ALESSANDRA; LOGUERCIO, ALESSANDRO DOURADO; RAGGIO, DANIELA PROCIDA. Effect of 2 years water aging on bond strength stability of adhesive systems to artificial caries-affected primary dentin. INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES, v. 54, p. 172-176, . (12/11846-5)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
CALVO, Ana Flávia Bissoto. Different degradations models to evaluate bond strength in sound and caries primary dentin. 2015. Doctoral Thesis - Universidade de São Paulo (USP). Faculdade de Odontologia (FO/SDO) São Paulo.

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