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

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

Abstract

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)

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, 2019-04-04. (12/09721-0, 12/12771-9)

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. (12/12771-9, 12/09721-0, 18/07530-9)

DE LIMA GODAS, ANDRE GUSTAVO; UMEDA SUZUKI, THAIS YUMI; GOMES FILHO, JOAO EDUARDO; ASSUNCAO, WIRLEY GONCALVES; SUNDFELD, RENATO HERMAN; FRAGA BRISO, ANDRE LUIZ; DOS SANTOS, PAULO HENRIQUE. Do customized fiberglass posts influence the bond interface in different regions of intraradicular dentin?. JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY, v. 35, n. 15, p. 1675-1686, AUG 3 2021. (12/09721-0, 12/07212-0)