| Microleakage of a resin sealant after acid-etching, Er:YAG laser irradiation and air-abrasion of pits and fissures. | |
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MedLine Citation:
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PMID: 11443794 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: The aim of this in vitro study was to assess microleakage underneath a filled pit-and-fissure sealant bonded to occlusal surfaces treated by four enamel etching techniques. SUMMARY BACKGROUND DATA: There has been no report of a study assessing microleakage of a pit-and-fissure sealant, comparing acid-etching, Er:YAG laser and air-abrasion for treating enamel surface. METHODS: Forty extracted human third molars were selected and randomly assigned into four groups of ten teeth: group I, the occlusal surfaces were acid-etched; group II, a very short pulsed Er:YAG laser was used to treat the surfaces; group III, aluminum oxide air-abrasion was associated with acid-etching; group IV, Er:YAG laser was associated with acid-conditioning. The surfaces were sealed and the teeth were stored for 7 days in distilled water. Then, specimens were thermocycled, immersed in a 0.2% rhodamine solution, sectioned, and analyzed for leakage using an optical microscope connected to a video camera. The images were digitized and analyzed by software that allowed microleakage assessment in millimeters. RESULTS: Statistical analysis showed that occlusal surfaces treated exclusively by the Er:YAG laser (group II) provided the poorest marginal sealing and that acid-etching (group I) was statistically similar to aluminum oxide air-abrasion + acid etching (group III) and to Er:YAG laser + acid-etching (group IV). CONCLUSIONS: The results suggest that complementing either air-abrasion or Er:YAG laser irradiation with a subsequent acid-conditioning did not lessen microleakage at the enamel-sealant interface when compared with an acid-etched group. It was also observed that treating the enamel surface exclusively by Er:YAG laser resulted in the highest degree of leakage. |
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Authors:
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M C Borsatto; S A Corona; R G Dibb; R P Ramos; J D Pécora |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Journal of clinical laser medicine & surgery Volume: 19 ISSN: 1044-5471 ISO Abbreviation: J Clin Laser Med Surg Publication Date: 2001 Apr |
Date Detail:
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Created Date: 2001-07-10 Completed Date: 2001-08-09 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9006547 Medline TA: J Clin Laser Med Surg Country: United States |
Other Details:
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Languages: eng Pagination: 83-7 Citation Subset: D |
Affiliation:
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Ribeirão Preto School of Dentistry, University of São Paulo, SP, Brazil. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acid Etching, Dental
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methods* Air Abrasion, Dental Dental Fissures / therapy* Dental Leakage / prevention & control* Humans Laser Therapy* Microscopy, Electron, Scanning Molar, Third Pit and Fissure Sealants* Random Allocation Resin Cements Surface Properties |
| Chemical | |
Reg. No./Substance:
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0/Pit and Fissure Sealants; 0/Resin Cements |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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