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

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 + A...

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Bibliographic Details
Published in:	Brazilian oral research Vol. 26; no. 3; pp. 275 - 281
Main Authors:	Kikuti, Willian Yoshio, Chaves, Fernanda Oliveira, Di Hipólito, Vinicius, Rodrigues, Flávia Pires, D'Alpino, Paulo Henrique Perlatti
Format:	Journal Article
Language:	English
Published:	Brazil Sociedade Brasileira de Pesquisa Odontológica - SBPqO 01-05-2012 Sociedade Brasileira de Pesquisa Odontológica
Subjects:	Analysis of Variance Composite Resins - chemistry Compressive Strength Dental Restoration, Permanent Dental Restoration, Permanent - methods Dental Stress Analysis Dentin-Bonding Agents Dentistry DENTISTRY, ORAL SURGERY & MEDICINE Humans Materials Testing Surface Properties Tooth Fractures Compressive Strength Dentin-Bonding Agents Dental Restoration, Permanent
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Summary:	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.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1807-3107 1806-8324 1807-3107
DOI:	10.1590/S1806-83242012005000004