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A study on the fracture strength of collarless metal-ceramic fixed partial dentures

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dc.contributor.authorYoon, Jong-Wook-
dc.contributor.authorKim, Sung-Hun-
dc.contributor.authorLee, Jai-Bong-
dc.contributor.authorHan, Jung-Suk-
dc.contributor.authorYang, Jae-Ho-
dc.date.accessioned2013-01-15T01:15:19Z-
dc.date.available2013-01-15T01:15:19Z-
dc.date.issued2010-
dc.identifier.citationJOURNAL OF ADVANCED PROSTHODONTICS, Vol.2, No.4, pp.134-141ko_KR
dc.identifier.issn2005-7806-
dc.identifier.urihttps://hdl.handle.net/10371/80545-
dc.description.abstractPURPOSE. The objective of this study was to evaluate fracture strength of collarless metal-ceramic FPDs according to their metal coping designs. MATERIALS AND METHODS. Four different facial margin design groups were investigated. Group A was a coping with a thin facial metal collar, group B was a collarless coping with its facial metal to the shoulder, group C was a collarless coping with its facial metal 1 mm short of the shoulder, and group D was a collarless coping with its facial metal 2 mm short of the shoulder. Fifteen 3-unit collarless metal-ceramic FPDs were fabricated in each group. Finished FPDs were cemented to PBT (Polybutylene terephthalate) dies with resin cement. The fracture strength test was carried out using universal testing machine (Instron 4465, Instron Co., Norwood MA, USA) at a cross head speed of 0.5 mm/min. Aluminum foil folded to about 1 mm of thickness was inserted between the plunger tip and the incisal edge of the pontic. Vertical load was applied until catastrophic porcelain fracture occurred. RESULTS. The greater the bulk of unsupported facial shoulder porcelain was, the lower the fracture strength became. However, there were no significant differences between experimental groups (P>.05). CONCLUSION. All groups of collarless metal-ceramic FPDs had higher fracture strength than maximum incisive biting force. Modified collarless metal-ceramic FPD can be an alternative to all-ceramic FPDs in clinical situations. [J Adv Prosthodont 2010;2:134-41]ko_KR
dc.language.isoenko_KR
dc.publisherKOREAN ACAD PROSTHODONTICSko_KR
dc.subjectFracture strengthko_KR
dc.subjectPorcelain marginko_KR
dc.subjectCollarless metal-ceramic fixed partial dentureko_KR
dc.subjectModified collarless copingko_KR
dc.titleA study on the fracture strength of collarless metal-ceramic fixed partial denturesko_KR
dc.typeArticleko_KR
dc.contributor.AlternativeAuthor윤종욱-
dc.contributor.AlternativeAuthor김성훈-
dc.contributor.AlternativeAuthor이재봉-
dc.contributor.AlternativeAuthor한중석-
dc.contributor.AlternativeAuthor양재호-
dc.identifier.doi10.4047/jap.2010.2.4.134-
dc.citation.journaltitleJOURNAL OF ADVANCED PROSTHODONTICS-
dc.description.tc0-
Appears in Collections:
College of Dentistry/School of Dentistry (치과대학/치의학대학원)Dept. of Dentistry (치의학과)Journal Papers (저널논문_치의학과)
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