Evaluation of the fit of metal ceramic restorations fabricated with a pre-sintered soft alloy

Jong Kyoung Park, Hae-Young Kim, Woong Chul Kim, Ji Hwan Kim

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Statement of problem: Fit is an important factor influencing the success or failure of restorations. Recently, there has been increasing use of a newly developed pre-sintered soft alloy for use in computer-aided design/computer-aided manufacturing (CAD/CAM) of cobalt-chromium alloys for the fabrication of metal ceramic restorations. However, almost no studies are available on the fit of restorations fabricated in this way. Purpose: The purpose of this in vitro study was to evaluate the fit of metal coping fabricated from a newly developed CAD/CAM soft alloy in order to investigate its clinical applicability. Material and methods: Metal coping was categorized as casting alloy (CA), fully sintered hard alloy (FHA), or pre-sintered soft alloy (PSA) depending on the material, and 10 specimens of each category were fabricated. Seven measurement locations were selected in both the mesiodistal and labiolingual directions. For measurement of the marginal and internal discrepancies, silicone molds produced using a silicone replica technique were divided into mesiodistal and labiolingual cross-sections, and the width was measured. The Kruskal-Wallis and Mann-Whitney U test were performed (corrected α error level=.05/3). Results: The mean values of the total discrepancy were smallest in the CA group (52.53 ±33.40 μm) and largest in the FHA group (87.84 ±39.43 μm). The CA group and the PSA group were not significantly different from each other (P>.05) but were statistically significantly different from the FHA group (P.05). Conclusions: The fit of the PSA restorations determined by this study was similar to that of conventional cast restorations. Both FHA and PSA restorations demonstrated clinically acceptable values (

Original languageEnglish
JournalJournal of Prosthetic Dentistry
DOIs
Publication statusAccepted/In press - 2016

Fingerprint

Metal Ceramic Alloys
Computer-Aided Design
Silicones
Replica Techniques
Metals
Chromium Alloys
Nonparametric Statistics

ASJC Scopus subject areas

  • Oral Surgery

Cite this

Evaluation of the fit of metal ceramic restorations fabricated with a pre-sintered soft alloy. / Park, Jong Kyoung; Kim, Hae-Young; Kim, Woong Chul; Kim, Ji Hwan.

In: Journal of Prosthetic Dentistry, 2016.

Research output: Contribution to journalArticle

@article{e07b05a5c34449d6a3c34de10dd007fc,
title = "Evaluation of the fit of metal ceramic restorations fabricated with a pre-sintered soft alloy",
abstract = "Statement of problem: Fit is an important factor influencing the success or failure of restorations. Recently, there has been increasing use of a newly developed pre-sintered soft alloy for use in computer-aided design/computer-aided manufacturing (CAD/CAM) of cobalt-chromium alloys for the fabrication of metal ceramic restorations. However, almost no studies are available on the fit of restorations fabricated in this way. Purpose: The purpose of this in vitro study was to evaluate the fit of metal coping fabricated from a newly developed CAD/CAM soft alloy in order to investigate its clinical applicability. Material and methods: Metal coping was categorized as casting alloy (CA), fully sintered hard alloy (FHA), or pre-sintered soft alloy (PSA) depending on the material, and 10 specimens of each category were fabricated. Seven measurement locations were selected in both the mesiodistal and labiolingual directions. For measurement of the marginal and internal discrepancies, silicone molds produced using a silicone replica technique were divided into mesiodistal and labiolingual cross-sections, and the width was measured. The Kruskal-Wallis and Mann-Whitney U test were performed (corrected α error level=.05/3). Results: The mean values of the total discrepancy were smallest in the CA group (52.53 ±33.40 μm) and largest in the FHA group (87.84 ±39.43 μm). The CA group and the PSA group were not significantly different from each other (P>.05) but were statistically significantly different from the FHA group (P.05). Conclusions: The fit of the PSA restorations determined by this study was similar to that of conventional cast restorations. Both FHA and PSA restorations demonstrated clinically acceptable values (",
author = "Park, {Jong Kyoung} and Hae-Young Kim and Kim, {Woong Chul} and Kim, {Ji Hwan}",
year = "2016",
doi = "10.1016/j.prosdent.2016.03.024",
language = "English",
journal = "Journal of Prosthetic Dentistry",
issn = "0022-3913",
publisher = "Mosby Inc.",

}

TY - JOUR

T1 - Evaluation of the fit of metal ceramic restorations fabricated with a pre-sintered soft alloy

AU - Park, Jong Kyoung

AU - Kim, Hae-Young

AU - Kim, Woong Chul

AU - Kim, Ji Hwan

PY - 2016

Y1 - 2016

N2 - Statement of problem: Fit is an important factor influencing the success or failure of restorations. Recently, there has been increasing use of a newly developed pre-sintered soft alloy for use in computer-aided design/computer-aided manufacturing (CAD/CAM) of cobalt-chromium alloys for the fabrication of metal ceramic restorations. However, almost no studies are available on the fit of restorations fabricated in this way. Purpose: The purpose of this in vitro study was to evaluate the fit of metal coping fabricated from a newly developed CAD/CAM soft alloy in order to investigate its clinical applicability. Material and methods: Metal coping was categorized as casting alloy (CA), fully sintered hard alloy (FHA), or pre-sintered soft alloy (PSA) depending on the material, and 10 specimens of each category were fabricated. Seven measurement locations were selected in both the mesiodistal and labiolingual directions. For measurement of the marginal and internal discrepancies, silicone molds produced using a silicone replica technique were divided into mesiodistal and labiolingual cross-sections, and the width was measured. The Kruskal-Wallis and Mann-Whitney U test were performed (corrected α error level=.05/3). Results: The mean values of the total discrepancy were smallest in the CA group (52.53 ±33.40 μm) and largest in the FHA group (87.84 ±39.43 μm). The CA group and the PSA group were not significantly different from each other (P>.05) but were statistically significantly different from the FHA group (P.05). Conclusions: The fit of the PSA restorations determined by this study was similar to that of conventional cast restorations. Both FHA and PSA restorations demonstrated clinically acceptable values (

AB - Statement of problem: Fit is an important factor influencing the success or failure of restorations. Recently, there has been increasing use of a newly developed pre-sintered soft alloy for use in computer-aided design/computer-aided manufacturing (CAD/CAM) of cobalt-chromium alloys for the fabrication of metal ceramic restorations. However, almost no studies are available on the fit of restorations fabricated in this way. Purpose: The purpose of this in vitro study was to evaluate the fit of metal coping fabricated from a newly developed CAD/CAM soft alloy in order to investigate its clinical applicability. Material and methods: Metal coping was categorized as casting alloy (CA), fully sintered hard alloy (FHA), or pre-sintered soft alloy (PSA) depending on the material, and 10 specimens of each category were fabricated. Seven measurement locations were selected in both the mesiodistal and labiolingual directions. For measurement of the marginal and internal discrepancies, silicone molds produced using a silicone replica technique were divided into mesiodistal and labiolingual cross-sections, and the width was measured. The Kruskal-Wallis and Mann-Whitney U test were performed (corrected α error level=.05/3). Results: The mean values of the total discrepancy were smallest in the CA group (52.53 ±33.40 μm) and largest in the FHA group (87.84 ±39.43 μm). The CA group and the PSA group were not significantly different from each other (P>.05) but were statistically significantly different from the FHA group (P.05). Conclusions: The fit of the PSA restorations determined by this study was similar to that of conventional cast restorations. Both FHA and PSA restorations demonstrated clinically acceptable values (

UR - http://www.scopus.com/inward/record.url?scp=84979586841&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84979586841&partnerID=8YFLogxK

U2 - 10.1016/j.prosdent.2016.03.024

DO - 10.1016/j.prosdent.2016.03.024

M3 - Article

C2 - 27422236

AN - SCOPUS:84979586841

JO - Journal of Prosthetic Dentistry

JF - Journal of Prosthetic Dentistry

SN - 0022-3913

ER -