| Sealant bond strengths of CO(2) laser-etched versus acid-etched bovine enamel. | |
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MedLine Citation:
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PMID: 10960817 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND AND OBJECTIVE: The purpose of this study was to evaluate sealant shear bond strength on bovine enamel with standard acid etching compared with CO(2) laser etching. STUDY DESIGN/MATERIALS AND METHODS: Bovine enamel was prepared either by acid or laser etching and divided into four experimental groups, either acid or laser-etched teeth with or without a primer. A gelatin capsule was used to place the sealant on the prepared enamel surface and the bond tested in shear. Also surface roughness was evaluated by using a surface analyzer and an atomic force microscope. RESULTS: Shear bond strength results were the following: acid etch = 8.8 +/- 3.8 MPa, acid etch with primer = 10.3 +/- 5.5 MPa, laser etch = 4.0 +/- 1.1 MPa, and laser etch with primer = 6.2 +/- 2.3 MPa. Analysis of variance statistical analysis found no significant difference in bond strength between the acid-etched groups. However, the laser-etched groups had significantly lower bond strengths from the acid-etched teeth. In addition, a significant difference was observed between the laser-etched groups, where the use of the primer helped to increase the bond strength of the sealants. The surface roughness was significantly greater on the laser-etched teeth at the microm level (by using a surface analyzer) from the acid-etched and the control specimens. No difference in roughness (by using an atomic force microscope) was observed at the nanometer level between the laser and acid-etched teeth. CONCLUSION: For these particular settings, the laser-etched teeth resulted in lower bond strengths to enamel and the use of a primer increased the bond strength for laser-etched teeth only. |
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Authors:
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J L Drummond; H A Wigdor; J T Walsh; S Fadavi; I Punwani |
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Publication Detail:
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Type: Comparative Study; In Vitro; Journal Article |
Journal Detail:
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Title: Lasers in surgery and medicine Volume: 27 ISSN: 0196-8092 ISO Abbreviation: Lasers Surg Med Publication Date: 2000 |
Date Detail:
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Created Date: 2000-10-11 Completed Date: 2000-10-11 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8007168 Medline TA: Lasers Surg Med Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 111-8 Citation Subset: IM |
Copyright Information:
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Copyright 2000 Wiley-Liss, Inc. |
Affiliation:
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Department of Restorative Dentistry, University of Illinois at Chicago, Chicago, Illinois 60612-7212, USA. drummond@uic.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acid Etching, Dental Animals Carbon Dioxide Cattle Dental Bonding / methods* Dental Enamel* Dental Instruments* Laser Therapy* Pit and Fissure Sealants* Tensile Strength |
| Chemical | |
Reg. No./Substance:
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0/Pit and Fissure Sealants; 124-38-9/Carbon Dioxide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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