| In-vitro assessment of temperature rise in the pulp during orthodontic bonding. | |
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MedLine Citation:
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PMID: 20197176 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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INTRODUCTION: In this in-vitro study, we evaluated the temperature changes in the pulp chamber during bracket bonding using 4 different light sources. METHODS: Eighty intact extracted maxillary central incisors were used. The teeth were divided into 4 groups of 20 teeth each. Brackets (Mini Twin, Dentaurum, Ispringen, Germany) were bonded with Transbond XT (3M Unitek, Monrovia, Calif) adhesive and light cured with low-intensity halogen light for 40 seconds, high-intensity halogen light for 40 seconds, light-emitting diode (LED) light for 20 seconds, and plasma arc light (PAC) for 6 seconds. Light curing was performed 5 mm from tooth surfaces. A J-type thermocouple wire was positioned in the center of the pulp chamber. The results were analyzed with analysis of variance (ANOVA) and the Tukey HSD test. RESULTS: ANOVA and the Tukey HSD test showed that pulp chamber temperature changes were influenced by the type of light source. All groups showed significant differences between each other (P <0.001). The intrapulpal temperature changes induced by different light sources were the following: high-intensity halogen (6.84 degrees C +/- 2.44 degrees C), low-intensity halogen (4.71 degrees C +/- 0.96 degrees C), LED (2.95 degrees C +/- 1.12 degrees C), and PAC (0.96 degrees C +/- 0.83 degrees C). CONCLUSIONS: High- and low-intensity halogen light induced significantly higher intrapulpal temperature changes than did the LED and PAC. Except for the high intensity halogen light, orthodontic bonding with light-curing units did not exceed the critical 5.5 degrees C rise in temperature reported to produce pulpal damage. |
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Authors:
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Siddik Malko?; Tancan Uysal; Serdar U??mez; Eren I?man; Asli Baysal |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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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: 137 ISSN: 1097-6752 ISO Abbreviation: Am J Orthod Dentofacial Orthop Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-03-03 Completed Date: 2010-03-22 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8610224 Medline TA: Am J Orthod Dentofacial Orthop Country: United States |
Other Details:
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Languages: eng Pagination: 379-83 Citation Subset: D; IM |
Copyright Information:
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2010 American Association of Orthodontists. Published by Mosby, Inc. All rights reserved. |
Affiliation:
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Department of Orthodontics, and Chair, School of Dentistry, University of In?n?, Malatya, Turkey. siddikmalkoc@yahoo.com |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Body Temperature* Curing Lights, Dental / adverse effects Dental Bonding, Light-Cured / adverse effects* Dental Pulp / injuries, physiology* Humans Orthodontic Brackets* Resin Cements* |
| Chemical | |
Reg. No./Substance:
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0/Resin Cements; 0/Transbond XT |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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