Advanced search
Start date
Betweenand

Effect of two metalloproteinases Inhibitors on hibrid layer preservation and bond strength of Er:YAG laser irradiated dentin after chemical degradation

Grant number: 13/18868-7
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): March 01, 2014
Effective date (End): December 31, 2014
Field of knowledge:Health Sciences - Dentistry - Pediatric Dentistry
Principal researcher:Daniel Galafassi
Grantee:Beatriz Carlos Corrêa
Home Institution: Faculdade de Odontologia de Ribeirão Preto (FORP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil

Abstract

This study aims to evaluate the effect of two metalloproteinases inhibitors of bond strength on dentin treated with Er:YAG laser, after degradation of the adhesive interface. Will be selected 40 third human molars (n = 10), which will have the crown portion cut in the horizontal direction in order to expose the dentin portion. The Er:YAG (260mJ/4Hz) will be applied to the dentin surface. The specimens shall be conditioned with 37% phosphoric acid for 15 seconds, rinsed for 30 seconds, and dry with air jets. Then will be randomly divided into two groups according to the rehydration of the dentin surface: A. 2% chlorhexidine and B. Galardin at a ratio of 1.5 ¼l. Does the employee Single Bond. At the end of the adhesive system application, a plateau will be made with a composite. The specimens will be restored, sectioned in order to obtain approximately 6 sticks of approximately 1.0 mm2 (± 0.2 mm2) and divided according to the method employed for the chemical degradation of the adhesive interface: subgroup 1) 24 hours deionized water storage; subgroup 2) 5 hours NaOCl immersion. After the adhesive interface degradation, the sticks will be submitted to microtensile test using a universal testing machine (0.5 mm / min). The pattern of failure will be analyzed by scanning electron microscopy and the data analyzed for their distribution to choose the appropriate statistical method. (AU)

News published in Agência FAPESP Newsletter about the scholarship:
Articles published in other media outlets (0 total):
More itemsLess items
VEICULO: TITULO (DATA)
VEICULO: TITULO (DATA)

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