| Micromorphological analysis of dentinal structure after irradiation with Nd:YAG laser and immersion in acidic beverages. | |
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MedLine Citation:
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PMID: 17199476 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: The purpose of this study was to analyze dentinal surfaces that were exposed to acidic beverages, then treated with Nd:YAG laser and afterwards exposed to acidic beverages again. BACKGROUND DATA: Dentin hypersensitivity can result from surface erosion caused by acidic beverages, which exposes and enlarges the dentinal tubules. Nd:YAG laser has been used as a treatment option. METHODS: Sixty-eight dentin samples were prepared and assigned to five groups: G1, control (n = 4); G2, 3-h immersion (n = 16); G3, 3-h immersion + Nd:YAG; G4, 3-h immersion + Nd:YAG + 3-h immersion; and G5, 3-h immersion + Nd:YAG + 6-h immersion. Each group was divided into four subgroups, with different acid beverages: lemon (n = 4); passion fruit (n = 4); cola (n = 4); and wine (n = 4). Irradiation with the Nd:YAG was in contact mode, focused and perpendicular through a quartz fiber of 300 microm of diameter in scanning movements for 60 sec with a 10-sec interval and the paramenters 0.6 W, 10 Hz, 60 mJ, and 85 mJ/cm(2). Each subgroup was examined by scanning electron microscope. RESULTS: All the acidic beverages contributed to exposure and increased diameter of the dentinal tubules. CONCLUSIONS: Irradiation with Nd:YAG laser produced obliteration of and reduction in the number of dentinal tubules, thus modifying the original structure. |
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Authors:
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Fláviaviegas Naylor; Ana Cecilia Corrêa Aranha; Carlos De Paula Eduardo; Victor E Arana-Chavez; Maria Angela Pita Sobral |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Photomedicine and laser surgery Volume: 24 ISSN: 1549-5418 ISO Abbreviation: - Publication Date: 2006 Dec |
Date Detail:
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Created Date: 2007-01-03 Completed Date: 2007-03-16 Revised Date: 2007-03-22 |
Medline Journal Info:
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Nlm Unique ID: 101222340 Medline TA: Photomed Laser Surg Country: United States |
Other Details:
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Languages: eng Pagination: 745-52 Citation Subset: IM |
Affiliation:
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Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Beverages* Dentin / ultrastructure* Humans Hydrogen-Ion Concentration Immersion Lasers* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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