| Diode-pumped solid-state laser for bonding orthodontic brackets: effect of light intensity and light-curing time. | |
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MedLine Citation:
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PMID: 20532581 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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This study evaluated the shear bond strength (SBS) of orthodontic brackets bonded to teeth using a diode-pumped solid state (DPSS) laser of 473 nm with various light intensity and light-curing settings. For the study, a total of 150 extracted human teeth were divided into ten groups. In the control group, the brackets were bonded to the teeth using a quartz-tungsten-halogen (QTH) light with an intensity of 900 mW/cm(2). In the experimental groups, the brackets were bonded using a DPSS laser with three different light intensities and light-curing times. The same bracket type and adhesive were used in all groups throughout the study. Statistical analysis was performed to compare the SBS, and adhesive remnant index (ARI) among the groups. As results, brackets bonded using the DPSS laser with an intensity of 700 mW/cm(2) for 40 s (totally) showed a slightly higher SBS (12.2 ± 1.8 MPa) than that of those bonded using a QTH light (control; 11.6 ± 1.6 MPa). The SBS values linearly increased with increasing energy density (light intensity × light-curing time) of the DPSS laser (R = 0.95, p < 0.001). However, the SBS values among the test groups were similar regardless of the difference in light-curing conditions. A comparison of the ARI scores among the groups suggested a similar bracket failure mode. |
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Authors:
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Young-Oh Kim; Soo-Byung Park; Woo-Sung Son; Ching-Chang Ko; Franklin García-Godoy; Hyung-Il Kim; Yong Hoon Kwon |
Publication Detail:
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Type: Journal Article Date: 2010-06-08 |
Journal Detail:
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Title: Lasers in medical science Volume: 26 ISSN: 1435-604X ISO Abbreviation: Lasers Med Sci Publication Date: 2011 Sep |
Date Detail:
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Created Date: 2011-08-08 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8611515 Medline TA: Lasers Med Sci Country: England |
Other Details:
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Languages: eng Pagination: 585-9 Citation Subset: IM |
Affiliation:
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Department of Orthodontics, School of Dentistry, Pusan National University, Yangsan, 626-870, Korea. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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