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Microtensile bond strength of 2-step etch-and-rinse adhesive systems: Effects of different treatments of etched dentin.

Grant number: 10/20500-0
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): March 01, 2011
Effective date (End): February 29, 2012
Field of knowledge:Health Sciences - Dentistry - Dental Clinics
Principal Investigator:Edson Alves de Campos
Grantee:Tamíris da Costa Neves Possetti
Host Institution: Faculdade de Odontologia (FOAr). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil


The aim of this study is to evaluate the use of chlorhexidine in different excipients on the microtensile bond strength of 2-step etch-and-rinse adhesive systems. For this study will be selected 96 sound human molars divided into 12 groups (n = 8). The occlusal surfaces of the molars will be removed with a low-speed diamond saw to expose flat dentin surfaces. Different adhesive systems [Single Bond 2 (3M ESPE, St. Paul, MN, USA), Prime & Bond NT (Dentsply, Milford, DE, USA) and Excite (Ivoclar Vivadent, Schaan Liechtenstein)] will be applied on the previously etched dentin (phosphoric acid 35% - Ultradent Products Inc., South Jordan, Utah, USA) after one of the following dentin treatments: dentin saturated with water; dentin impregnated with chlorhexidine in water; dentin saturated with ethanol; dentin impregnated with chlorhexidine in ethanol. The bonding systems will be applied according to the manufacturer's instructions and will be followed by composite application. After a storage period of 7 days in artificial saliva at 37oC, microtensile test will be carried out using a universal testing machine at 0.5mm/min. The results will be submitted to appropriate statistical tests, depending on data distribution.

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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)
TAMÍRIS PEREIRA DA COSTA NEVES; THAIS PIRAGINE LEANDRIN; MATEUS RODRIGUES TONETTO; MARCELO FERRAREZI ANDRADE; EDSON ALVES DE CAMPOS. Resistência de união à microtração de sistemas adesivos “condiciona-e-lava” de dois passos: efeito de diferentes tratamentos da superfície dentinária condicionada. Rev. odontol. UNESP, v. 46, n. 3, p. 131-137, . (10/20500-0)

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