Flexural strength and modulus of elasticity of different types ... - SciELO

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Flexural strength and modulus of elasticity of different types ... - SciELO

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The microfine composite presented the lowest filler weight and the lowest mechanical properties. Statistically different flexural strength and modulus of elasticity ...

Dental Materials

Dental Materials

Flexural strength and modulus of elasticity of different types of resin-based composites Resistência à flexão e módulo de elasticidade de diferentes tipos de resina composta Sinval Adalberto Rodrigues Junior(a) Cesar Henrique Zanchi(b) Rodrigo Varella de Carvalho(a) Flávio Fernando Demarco(c)

(a)

PhD Students; (b) MSc Student; (c) PhD, Professor – Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas.

Corresponding author: Flávio Fernando Demarco Faculdade de Odontologia - UFPel Rua Gonçalves Chaves, 457 Pelotas - RS - Brazil CEP: 96015-560 E-mail: [email protected]

Received for publication on Apr 04, 2006 Sent for alterations on Jun 21, 2006 Accepted for publication on Aug 02, 2006

16

Braz Oral Res 2007;21(1):16-21

Abstract: The aim of the study was to test whether the filler composition of resin composites influences their flexural strength and modulus of elasticity. Flexural strength and modulus of elasticity were obtained through a three-point bending test. Twelve bar shaped specimens of 5 commercially available composites – Supreme (3M/ESPE), a universal nanofilled composite; Esthet-X (Dentsply), Z-250 (3M/ESPE), Charisma (Heraeus Kulzer), universal hybrid composites; and Helio Fill (Vigodent), a microfine composite – were confectioned according to the ISO 4049/2000 specifications. The test was performed after a 7days storage time using a universal test machine with a crosshead speed of 1 mm/min. The filler weight content was determined by the ashing technique. The data obtained on the mechanical properties were submitted to ANOVA and Tukey test (p