Fracture resistance of teeth restored with different resin-based restorative systems

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Author(s):	Kikuti, Willian Yoshio ; Chaves, Fernando Oliveira ; Di Hipolito, Vinicius ; Rodrigues, Flavia Pires ; Perlatti D'Alpino, Paulo Henrique Total Authors: 5
Document type:	Journal article
Source:	BRAZILIAN ORAL RESEARCH; v. 26, n. 3, p. 7-pg., 2012-05-01.
Abstract
The aim of the present study was to evaluate the fracture resistance of teeth restored with resin composite. Forty-eight maxillary premolar teeth were chosen and randomly divided to six groups: G1 (control): sound teeth; G2: MOD preparation, unrestored; G3: MOD + Adper Single Bond 2/P60; G4: MOD + Adper Easy One/P60; G5: MOD + P90 restorative system; G6: MOD + Adper Easy One/P90 Bond/P90. Specimens were subjected to compressive axial loading (0.5 mm/min). Flexural strength and the modulus of elasticity were also tested (n = 7). The only statistical equivalence with sound teeth was noted for G3 (p < 0.05). Flexural strength and the modulus of elasticity varied among the composites tested (n = 10). The reestablishment of the resistance to fracture in premolars subjected to Class II MOD preparations is restorative-system-dependent. The silorane restorative system is not able to recover the resistance to fracture. (AU)

FAPESP's process:	11/06735-7 - Mechanical properties of posterior teeth resin composites as a function of the storage temperature
Grantee:	Fernanda Oliveira Chaves
Support Opportunities:	Scholarships in Brazil - Scientific Initiation