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Customized fiberglass post: study of mechanical properties of restorative adhesive interface

Grant number: 12/09721-0
Support type:Regular Research Grants
Duration: November 01, 2013 - October 31, 2015
Field of knowledge:Health Sciences - Dentistry - Dental Materials
Principal Investigator:Paulo Henrique dos Santos
Grantee:Paulo Henrique dos Santos
Home Institution: Faculdade de Odontologia (FOA). Universidade Estadual Paulista (UNESP). Campus de Araçatuba. Araçatuba , SP, Brazil


This study will evaluate the mechanical properties (elastic modulus and hardness) of the resin cements and underlying dentin after the bonding of customized fiberglass to different thirds the intra-root dentin as well as measure the push-out bond strength between customized fiberglass post to different thirds the intra-root dentin before and after mechanical cycling. Single root pre-molars will be subjected to endodontic treatments, and the samples will be divided into four groups (n=10) according to the type of intra-root retainer used (customized and non-customized fiberglass posts) and aging (with or without mechanical cycling, totaling 500.000 cycles). The roots will be sectioned in slices of approximately 1.3mm (cervical, middle and apical regions) and submitted to the measurements of hardness, elastic modulus and push-out bond strength test in different regions. After bond strength test specimens will be evaluate by scanning electron microscopy to characterize the dentin structure. Data of bond strength and mechanical proprieties will be subjected to normality and statistical tests to comparison of means values (± = 0.05). (AU)

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 JUN 26 2019. Web of Science Citations: 0.
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, Mar. 2019.

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