Document Detail

Effects of different surface treatments and accelerated artificial aging on the bond strength of composite resin repairs.
MedLine Citation:
PMID:  22147227     Owner:  NLM     Status:  In-Data-Review    
The purpose of the present study was to assess the bond strength of composite resin repairs subjected to different surface treatments and accelerated artificial aging. 192 cylindrical samples (CSs) were prepared and divided into 24 groups (n = 8). Half of the CSs were stored in water for 24 h, and the other half were subjected to C-UV accelerated aging for non-metallic specimens. The treatments were phosphoric acid + silane + adhesive (PSA); phosphoric acid + adhesive (PA); diamond bur + phosphoric acid + silane + adhesive (DPSA); diamond bur + phosphoric acid + adhesive (DPA); air abrasion + phosphoric acid + silane + adhesive (APSA); and air abrasion + phosphoric acid + adhesive (APA). The repair was performed and the specimens were again aged as described above. A control group (n = 8) was established and did not receive any type of aging or surface treatment. The specimens were loaded to failure in shear mode with a crosshead speed of 0.5 mm/min until fracture. Data were analyzed by one-way ANOVA/Tukey's test (p < 0.05). No statistically significant differences were found among DPSA, DPA, APSA, APA, and the control group. The aged PSA and PA achieved low bonding values and were statistically different from the control group, whereas the non-aged PSA and PA presented no statistically significant difference from the control group. Repairs with the proposed surface treatments were viable on both recent and aged restorations; however, phosphoric acid + adhesive alone were effective only on recent restorations.
Marco Aurélio Veiga de Melo; Marcos Ribeiro Moysés; Saulo Galvão Dos Santos; Carlos Eduardo Pinto Alcântara; José Carlos Rabelo Ribeiro
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Brazilian oral research     Volume:  25     ISSN:  1807-3107     ISO Abbreviation:  Braz Oral Res     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-07     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101307187     Medline TA:  Braz Oral Res     Country:  Brazil    
Other Details:
Languages:  eng     Pagination:  485-91     Citation Subset:  D; IM    
Department of Restorative Dentistry, Três Corações Dental School, Vale do Rio Verde University, Três Corações, MG, Brazil.
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