Document Detail

Adhesion studies on dental enamel surfaces irradiated by a rapidly scanned carbon dioxide laser.
MedLine Citation:
PMID:  21998494     Owner:  NLM     Status:  Publisher    
In this study, we investigated the influence of different laser scanning patterns on the adhesive strength of laser irradiated enamel surfaces both with and without post ablation acid etching. Previous studies of dental enamel surfaces ablated by a rapidly scanned carbon dioxide laser indicated that the highly uniform smooth surfaces produced by the scanned laser beam yielded low bond strength and acid etching was required in order to attain a high bond strength. However, since the enamel surface after ablation by CO(2) lasers is more resistant to acid dissolution it is desirable to avoid acid etching before bonding. The overlap between adjacent laser spots was varied to modify the effective surface roughness. In addition, small retention holes were drilled at higher laser intensity with varying spacing to increase the adhesive strength without acid etching. Varying the degree of overlap between adjacent laser spots did not significantly influence the bond strength with post ablation acid etching. The bond strength was significantly higher without acid etching with retention holes spaced 250-µm apart.
Kwang K Chang; Michal Staninec; Kenneth H Chan; Daniel Fried
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Publication Detail:
Journal Detail:
Title:  Proceedings - Society of Photo-Optical Instrumentation Engineers     Volume:  7884     ISSN:  1018-4732     ISO Abbreviation:  -     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2011-10-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101290197     Medline TA:  Proc Soc Photo Opt Instrum Eng     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
University of California, San Francisco, San Francisco, CA94143-0758.
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Grant Support
R01 DE019631-02//NIDCR NIH HHS

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