Please use this identifier to cite or link to this item: http://guaiaca.ufpel.edu.br:8080/handle/123456789/795
metadata.dc.type: Article
Title: Influence of the composition of an experimental adhesive on conversion kinetics, flexural strength and radiodensity
Other Titles: Influência da composição de um adesivo experimental na cinética de conversão, resistência à flexão e radiodensidade
Authors: Collares, Fabrício Mezzomo
Leitune, Vicente Castelo branco
Ogliari, Fabrício Aulo
Piva, Evandro
Fontanella, Vania Regina Camargo
Samuel, Susana Maria Werner
Abstract: Purpose: To evaluate the effect of the addition of three radiopaque agents to an experimental adhesive on conversion kinetics, flexural strength and radiodensity. Methods: The model adhesive was formulated by mixing 50 wt% Bis-GMA, 25 wt% TEGDMA and 25 wt% HEMA. Barium sulfate, Titanium dioxide and Zirconium in 0.1, 0.2, 0.4, 0.8 and 1.6 wt% were added separately resulting in 15 experimental groups and 1 control group. The conversion kinetics of the model adhesive was evaluated using real time Fourier Transform Infrared Spectroscopy. The flexural tests were performed on 5 specimens (12 × 2 × 2 mm) for each group (total n = 80) in a universal testing machine. The radiodensity was evaluated by using an aluminum step-wedge and VistaScan phosphorous plates radiographs digital system with 0.6 s exposure and focal distance of 40 cm. Results: No statistical difference (P > 0.05) was found in flexural strength among all groups. The values of degree of conversion ranged from 45.51% e 62.46%. All groups showed higher values than 0.54 mm of aluminum for the evaluation of radiopacity. Conclusion: The addition of radiopaquing agents increased the adhesive radiodensity and did not affect its degree of conversion and flexural strength.
Keywords: Dental adhesive
Radiopaque
Degree of conversion
Flexural strength
Publisher: ediPUCRS
Citation: COLLARES, Fabrício M ; LEITUNE, V. C. B. ; OGLIARI, Fabrício Aulo ; PIVA, Evandro ; FONTANELLA, V. R. C. ; Samuel, S. M. W. . Influence of the composition of an experimental adhesive on conversion kinetics, flexural strength and radiodensity. Revista Odonto Ciência (PUCRS. Impresso), v. 24, p. 414-419, 2009.
URI: http://hdl.handle.net/123456789/795
Issue Date: 9-Jul-2009
Appears in Collections:Departamento de Odontologia Restauradora: Artigos de periódicos



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