Document Detail

Plasma arc curing lights for orthodontic bonding.
MedLine Citation:
PMID:  12490876     Owner:  NLM     Status:  MEDLINE    
Xenon plasma arc lights were introduced recently for light-cured orthodontic bonding. Compared with a conventional tungsten-quartz-halogen light source, these high-intensity lights promise a dramatic reduction in curing time. The purpose of this in vitro investigation was to evaluate bond strength with 2 commercially available plasma arc lights and reduced curing intervals. Brackets were bonded to 150 extracted human teeth (75 premolars, 75 incisors) with a composite adhesive. Intervals of 2 and 6 seconds were used for curing with the plasma arc lights; a control group was bonded with a halogen light source and 20 seconds of light exposure per bracket. Bond strength testing was performed with a universal testing machine. A substantial reduction in curing time was possible with both plasma arc units. Significantly lower bond strength values were found for premolar brackets bonded with plasma arc curing lights and the shortest curing interval of 2 seconds compared with the longer curing time of 6 seconds or the standard curing time with the halogen light. Although 2 seconds of curing might be adequate to achieve acceptable bond strength values for the incisors, the Weibull analysis indicated a higher probability of bond failure for premolar brackets in particular. Six seconds of curing time is recommended for bonding stainless steel brackets with xenon plasma arc light sources.
Arndt Klocke; Heike M Korbmacher; Lothar G Huck; Bärbel Kahl-Nieke
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Publication Detail:
Type:  Evaluation Studies; Journal Article    
Journal Detail:
Title:  American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics     Volume:  122     ISSN:  0889-5406     ISO Abbreviation:  Am J Orthod Dentofacial Orthop     Publication Date:  2002 Dec 
Date Detail:
Created Date:  2002-12-19     Completed Date:  2003-01-03     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8610224     Medline TA:  Am J Orthod Dentofacial Orthop     Country:  United States    
Other Details:
Languages:  eng     Pagination:  643-8     Citation Subset:  D; IM    
Department of Orthodontics, College of Dentistry, University of Hamburg, UKE, Martinistrasse 52, 20246 Hamburg, Germany.
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MeSH Terms
Analysis of Variance
Bisphenol A-Glycidyl Methacrylate
Dental Bonding / instrumentation*
Dental Debonding
Dental Equipment*
Dental Stress Analysis
Materials Testing
Orthodontic Brackets*
Resin Cements* / chemistry
Shear Strength
Stainless Steel
Statistics, Nonparametric
Survival Analysis
Technology, Dental / instrumentation*
Time Factors
Reg. No./Substance:
0/Resin Cements; 12597-68-1/Stainless Steel; 135669-49-7/Transbond; 1565-94-2/Bisphenol A-Glycidyl Methacrylate; 7440-63-3/Xenon

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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