Leucite content of selected dental porcelains
dc.contributor.author | Piché, Peter W. | en_US |
dc.contributor.author | O'Brien, William Joseph | en_US |
dc.contributor.author | Groh, Carole L. | en_US |
dc.contributor.author | Boenke, Kenneth M. | en_US |
dc.date.accessioned | 2006-04-28T16:35:37Z | |
dc.date.available | 2006-04-28T16:35:37Z | |
dc.date.issued | 1994-05 | en_US |
dc.identifier.citation | PichÉ, Peter W.; O'Brien, William J.; Groh, Carole L.; Boenke, Kenneth M. (1994)."Leucite content of selected dental porcelains." Journal of Biomedical Materials Research 28(5): 603-609. <http://hdl.handle.net/2027.42/38008> | en_US |
dc.identifier.issn | 0021-9304 | en_US |
dc.identifier.issn | 1097-4636 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/38008 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=8027100&dopt=citation | en_US |
dc.description.abstract | Leucite is a major crystalline component of dental porcelains. The presence of tetragonal leucite in dental porcelains increases their coefficients of thermal expansion due to its high coefficient of thermal expansion (20–25 × 10 −6 /°C). This is particularly useful for those porcelains designed for bonding to precious metals and nickel alloys. The purpose of this study was to determine the leucite content of selected commercial dental porcelains in relation to their coefficient of thermal expansion values. The weight fraction of leucite was determined with quantitative x-ray diffraction using copper as an internal standard. Coefficient of thermal expansion values were determined using a thermal dilatometric analyzer. Five commercial body porcelains were studied. Leucite was not detected in samples of Vitadur N and Duceram LFC. An ANOVA showed that there was a significant difference in the weight fraction of leucite for Silhouette, Ceramco II, and Optec HSP porcelains. Linear regression revealed a correlation ( R = 0.91) between weight fraction of leucite and the coefficient of thermal expansion for those samples containing leucite. Ducram LFC, which is recommended by the manufacturer for use with metals and leucite-containing porcelains, had no detectable leucite although the coefficient of thermal expansion was found to be 13.2 ± 0.4 × 10 −6 /°C at 25–472°C. A low glass transition temperature contributed to the high average coefficient of thermal expansion value. © 1994 John Wiley & Sons, Inc. | en_US |
dc.format.extent | 478081 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | John Wiley & Sons, Inc. | en_US |
dc.subject.other | Chemistry | en_US |
dc.subject.other | Polymer and Materials Science | en_US |
dc.title | Leucite content of selected dental porcelains | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Biological Chemistry | en_US |
dc.subject.hlbsecondlevel | Biomedical Engineering | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.subject.hlbtoplevel | Engineering | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Biologic and Materials Sciences, School of Dentistry, The University of Michigan, Ann Arbor, Michigan 48109–1078 | en_US |
dc.contributor.affiliationum | Department of Biologic and Materials Sciences, School of Dentistry, The University of Michigan, Ann Arbor, Michigan 48109–1078 ; Department of Biologic and Materials Sciences, School of Dentistry, The University of Michigan, Ann Arbor, Michigan 48109–1078 | en_US |
dc.contributor.affiliationum | Department of Biologic and Materials Sciences, School of Dentistry, The University of Michigan, Ann Arbor, Michigan 48109–1078 | en_US |
dc.contributor.affiliationum | Department of Biologic and Materials Sciences, School of Dentistry, The University of Michigan, Ann Arbor, Michigan 48109–1078 | en_US |
dc.identifier.pmid | 8027100 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/38008/1/820280510_ftp.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1002/jbm.820280510 | en_US |
dc.identifier.source | Journal of Biomedical Materials Research | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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