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Article: Effect of burnout temperature on strength of phosphate-bonded investments

TitleEffect of burnout temperature on strength of phosphate-bonded investments
Authors
KeywordsCasting
Phosphate-bonded investments
Strength
Issue Date1997
PublisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jdent
Citation
Journal Of Dentistry, 1997, v. 25 n. 2, p. 153-160 How to Cite?
AbstractObjective: The high-temperature strength behaviour of dental phosphate-bonded investments is not clearly understood. The present purpose was to determine their variation in strength with temperature and to seek explanations for that variation. Methods: The clamped-edge disc-rupture test was used in a sequential testing protocol, with a variable casting metal mass, to determine the effect of burnout temperature (ranging from 400 to 1100°C) on the strength of six phosphate-bonded investments. Results: The strength of phosphate-bonded investment is temperature sensitive, generally showing a distinct minimum in the tested temperature range. Low temperature strength gives little information about high temperature behaviour. The variation of strength with temperature seems amenable to explanation in terms of investment composition. Conclusion: Since strength varies greatly with temperature and brand, the inconsistency of previous results is explained. On the other hand, low-temperature strength is no guide for the high-temperature strength, so that information on both the room and the service temperature strength is required. Inversion of silica at high temperature may decrease the strength of phosphate-bonded investments. © 1997 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/66553
ISSN
2015 Impact Factor: 3.109
2015 SCImago Journal Rankings: 1.029
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLuk, HWKen_HK
dc.contributor.authorDarvell, BWen_HK
dc.date.accessioned2010-09-06T05:47:20Z-
dc.date.available2010-09-06T05:47:20Z-
dc.date.issued1997en_HK
dc.identifier.citationJournal Of Dentistry, 1997, v. 25 n. 2, p. 153-160en_HK
dc.identifier.issn0300-5712en_HK
dc.identifier.urihttp://hdl.handle.net/10722/66553-
dc.description.abstractObjective: The high-temperature strength behaviour of dental phosphate-bonded investments is not clearly understood. The present purpose was to determine their variation in strength with temperature and to seek explanations for that variation. Methods: The clamped-edge disc-rupture test was used in a sequential testing protocol, with a variable casting metal mass, to determine the effect of burnout temperature (ranging from 400 to 1100°C) on the strength of six phosphate-bonded investments. Results: The strength of phosphate-bonded investment is temperature sensitive, generally showing a distinct minimum in the tested temperature range. Low temperature strength gives little information about high temperature behaviour. The variation of strength with temperature seems amenable to explanation in terms of investment composition. Conclusion: Since strength varies greatly with temperature and brand, the inconsistency of previous results is explained. On the other hand, low-temperature strength is no guide for the high-temperature strength, so that information on both the room and the service temperature strength is required. Inversion of silica at high temperature may decrease the strength of phosphate-bonded investments. © 1997 Elsevier Science Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jdenten_HK
dc.relation.ispartofJournal of Dentistryen_HK
dc.rightsJournal of Dentistry. Copyright © Elsevier Ltd.en_HK
dc.subjectCastingen_HK
dc.subjectPhosphate-bonded investmentsen_HK
dc.subjectStrengthen_HK
dc.subject.meshChromium Alloys - chemistryen_HK
dc.subject.meshDental Alloys - chemistryen_HK
dc.subject.meshDental Casting Investment - chemistryen_HK
dc.subject.meshGold Alloys - chemistryen_HK
dc.subject.meshHot Temperatureen_HK
dc.subject.meshMetal Ceramic Alloys - chemistryen_HK
dc.subject.meshPhosphates - chemistryen_HK
dc.subject.meshSilicon Dioxide - chemistryen_HK
dc.subject.meshStress, Mechanicalen_HK
dc.subject.meshTemperatureen_HK
dc.titleEffect of burnout temperature on strength of phosphate-bonded investmentsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0300-5712&volume=25&issue=2&spage=153&epage=160&date=1997&atitle=Effect+of+burnout+temperature+on+strength+of+phosphate-bonded+investmentsen_HK
dc.identifier.emailLuk, HWK: wkluka@hkucc.hku.hken_HK
dc.identifier.emailDarvell, BW: b.w.darvell@hku.hken_HK
dc.identifier.authorityLuk, HWK=rp00008en_HK
dc.identifier.authorityDarvell, BW=rp00007en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.pmid9105147-
dc.identifier.scopuseid_2-s2.0-0031092155en_HK
dc.identifier.hkuros22613en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0031092155&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume25en_HK
dc.identifier.issue2en_HK
dc.identifier.spage153en_HK
dc.identifier.epage160en_HK
dc.identifier.isiWOS:A1997WQ11300011-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLuk, HWK=7006636056en_HK
dc.identifier.scopusauthoridDarvell, BW=7005953926en_HK

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