Document Detail

The effect of a 980 nm diode laser with different parameters of irradiation on the bond strength of fiberglass posts.
MedLine Citation:
PMID:  21613037     Owner:  NLM     Status:  In-Data-Review    
The aim of this study was to assess bond strength of fiberglass posts to root canal dentin irradiated with a 980 nm diode laser at different parameters of power and frequency. Fifty human maxillary canines were separated into five groups (n = 10) according to the following parameters of laser power and frequency: Group 1 (1.5 W/100 Hz), Group 2 (1.5 W/continuous wave [CW]), Group 3 (3.0 W/100 Hz), Group 4 (3.0 W/CW), and Group 5 (no irradiation). Following post cementation, samples underwent a push-out test (0.5 mm/min); next, fracture analysis was performed with a light microscope at 50x and 100x magnification. All of the irradiated groups had increased bond strength values compared to the nonirradiated group. Groups 1 and 2 demonstrated the highest bond strength values; however, statistically significant differences were observed for only the cervical third of Group 4 and the cervical/apical thirds of Group 5. Fracture analysis showed a predominance of mixed failures for Groups 1 and 2 and adhesive failures between dentin and cement for the other groups.
Lucas da Fonseca Roberti Garcia; Lucas Zago Naves; Ana Paula Farina; Cristiane Mezzena Walker; Simonides Consani; Fernanda de Carvalho Panzeri Pires-de-Souza
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  General dentistry     Volume:  59     ISSN:  0363-6771     ISO Abbreviation:  Gen Dent     Publication Date:    2011 Jan-Feb
Date Detail:
Created Date:  2011-05-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7610466     Medline TA:  Gen Dent     Country:  United States    
Other Details:
Languages:  eng     Pagination:  31-7     Citation Subset:  D    
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