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Analysis of the bonding interface between glass fiber posts and intra-root dentin subjected to irrigation with different conditioning agents

Grant number: 12/12771-9
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): March 01, 2013
Effective date (End): September 30, 2015
Field of knowledge:Health Sciences - Dentistry - Dental Clinics
Principal Investigator:Paulo Henrique dos Santos
Grantee:Thaís Yumi Umeda Suzuki
Host Institution: Faculdade de Odontologia (FOA). Universidade Estadual Paulista (UNESP). Campus de Araçatuba. Araçatuba , SP, Brazil
Associated scholarship(s):14/01152-1 - Effect of different post&core configurations on the fatigue and fracture resistance of endodontically treated teeth, BE.EP.DR


The purpose of this study is to evaluate the interaction of conditioning agents and resin cements in the luting procedure of glass fiber posts in different thirds of intra-root dentin, through the bond strength tests, sealing ability and mechanical properties of the adhesive interface. Ninety single-rooted human teeth will be used in this study. After endodontic filling and mechanical preparation of root canal, teeth will be divided into five groups according to the conditioning agents (distilled water, 5.25% sodium hypochlorite, 25% polyacrylic acid, 2% chlorhexidine and 23 ppm silver nanoparticles dispersion). Three adhesive cementation technique were adopted: Group 1: Single Bond Universal self-etching adhesive + RelyX ARC resin cement, Group 2: Maxcem Elite self-adhesive resin cement, Group 3: RelyX U200 self-adhesive resin cement. The sealing ability will be measured by fluid filtration method in different thirds of intra-root dentin. The mechanical properties (Martens hardness and elastic modulus) of the adhesive interface structures will be measured in a DUH-211 digital ultra-microhardness tester (Shimadzu). Push-out bond strength will be measured in a universal testing machine (Emic DL 3000) in different areas of intra-root dentin (cervical, middle and apical). The data of bond strength, mechanical properties and sealing ability will be subjected to statistical analysis (± = 0.05).

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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)
UMEDA SUZUKI, THAIS YUMI; GALLEGO, JUNO; ASSUNCAO, WIRLEY GONCALVES; FRAGA BRISO, ANDRE LUIZ; DOS SANTOS, PAULO HENRIQUE. Influence of silver nanoparticle solution on the mechanical properties of resin cements and intrarradicular dentin. PLoS One, v. 14, n. 6, . (12/12771-9, 12/09721-0, 18/07530-9)
THAÍS YUMI UMEDA SUZUKI; MARIANA ALMEIDA PEREIRA; JOÃO EDUARDO GOMES-FILHO; LINDA WANG; WIRLEY GONÇALVES ASSUNÇÃO; PAULO HENRIQUE DOS SANTOS. Do Irrigation Solutions Influence the Bond Interface Between Glass Fiber Posts and Dentin?. Brazilian Dental Journal, v. 30, n. 2, p. 106-116, . (12/12771-9, 12/09721-0)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
SUZUKI, Thaís Yumi Umeda. Análise da interface adesiva entre pinos de fibra de vidro e dentina intrarradicular submetida à irrigação com diferentes agentes condicionantes. 2015. Doctoral Thesis - Universidade Estadual Paulista (Unesp). Faculdade de Odontologia. Araçatuba Araçatuba.

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