| Gingival sulcus simulation model for evaluating the penetration characteristics of elastomeric impression materials. | |
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MedLine Citation:
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PMID: 12956493 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: This study evaluated the ability of five elastomeric impression materials to penetrate the gingival sulcus beyond the preparation margin. MATERIALS AND METHODS: A model of brass and agar gel was made to simulate human sulci and clinical gingival conditions. Two addition-curing silicones, one condensation-curing silicone, one polyether, and one polysulfide were tested. Ninety impressions of the model were made, six impressions with each material with differing sulcular widths. The centers of sulcular extension of these impressions were found with a measuring microscope. RESULTS: Two-way ANOVA showed significant differences among impression materials, sulcular widths, and their interactions. The penetration ability of polyether showed greater extension than the other materials, regardless of sulcular width. Polysulfide penetrated less than the two silicones with 0.2- and 0.1-mm sulcular widths but more with the narrow 0.05-mm sulcular width. CONCLUSION: These results suggest that the viscoelastic behavior of elastomers depends on the width of sulci. Moreover, the sulcus simulation model effectively contributes to the investigation of their characteristics. |
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Authors:
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Pantira Aimjirakul; Takayuki Masuda; Hidekazu Takahashi; Hiroyuki Miura |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The International journal of prosthodontics Volume: 16 ISSN: 0893-2174 ISO Abbreviation: Int J Prosthodont Publication Date: 2003 Jul-Aug |
Date Detail:
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Created Date: 2003-09-05 Completed Date: 2003-11-06 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 8900938 Medline TA: Int J Prosthodont Country: United States |
Other Details:
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Languages: eng Pagination: 385-9 Citation Subset: D |
Affiliation:
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Fixed Prosthodontics, Department of Restorative Sciences, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University, Japan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Analysis of Variance Dental Impression Materials / chemistry* Dental Impression Technique* Elasticity Elastomers / chemistry* Ethers / chemistry Gingiva / anatomy & histology* Humans Models, Anatomic* Polyvinyls / chemistry Resins, Synthetic / chemistry Sepharose / chemistry Silicone Elastomers / chemistry Siloxanes / chemistry Sulfides / chemistry Surface Properties Viscosity |
| Chemical | |
Reg. No./Substance:
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0/Dental Impression Materials; 0/Elastomers; 0/Ethers; 0/Impregum; 0/Polyvinyls; 0/Provil; 0/Resins, Synthetic; 0/Silicone Elastomers; 0/Siloxanes; 0/Sulfides; 9012-36-6/Sepharose; 9080-49-3/polysulfide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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