Clinical Acceptability of the Internal Gap of CAD/CAM PD-AG Crowns Using Intraoral Digital Impressions
The purpose of this study was to compare the internal gap between CAD/CAM palladium-silver crowns and cast gold crowns generated from intraoral digital versus conventional impressions and to determine the clinical acceptability. Nickel-chrome master dies were made from the prepared resin tooth with...
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Online Access: | http://dx.doi.org/10.1155/2016/7065454 |
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doaj-9668f0c65f924bc8ab014380da94c6482020-11-24T22:11:47ZengHindawi LimitedBioMed Research International2314-61332314-61412016-01-01201610.1155/2016/70654547065454Clinical Acceptability of the Internal Gap of CAD/CAM PD-AG Crowns Using Intraoral Digital ImpressionsTae-Gyung Kim0Sungtae Kim1Hyunmin Choi2Jae-Hoon Lee3Jae-Hong Kim4Hong-Seok Moon5Department of Prosthodontics, Yonsei University, College of Dentistry, 50 Yonseo-ro, Seodaemun-gu, Seoul 03722, Republic of KoreaDepartment of Periodontology, Dental Research Institute, Seoul National University, School of Dentistry, 101 Daehak-ro, Jongno-gu, Seoul 110-768, Republic of KoreaDepartment of Prosthodontics, Yonsei University, College of Dentistry, 50 Yonseo-ro, Seodaemun-gu, Seoul 03722, Republic of KoreaDepartment of Prosthodontics, Yonsei University, College of Dentistry, 50 Yonseo-ro, Seodaemun-gu, Seoul 03722, Republic of KoreaDepartment of Dental Technology, School of Medical and Public Health, Kyungdong University, 815 Gyeonhwon-ro, Wonju, Gangwondo 24695, Republic of KoreaDepartment of Prosthodontics, Yonsei University, College of Dentistry, 50 Yonseo-ro, Seodaemun-gu, Seoul 03722, Republic of KoreaThe purpose of this study was to compare the internal gap between CAD/CAM palladium-silver crowns and cast gold crowns generated from intraoral digital versus conventional impressions and to determine the clinical acceptability. Nickel-chrome master dies were made from the prepared resin tooth with the conventional impression method (n=40). For ICC (Intraoral, CAD/CAM) group, 10 intraoral digital impressions were made, and 10 CAD/CAM crowns of a PD-AG (palladium-silver) machinable alloy were generated. For IC (Intraoral, Cast) group, 10 gold crowns were cast from ten intraoral digital impressions. For CCC (Conventional, CAD/CAM) group, 10 CAD/CAM PD-AG crowns were made using the conventional impression method. For CC (Conventional, Cast) group, 10 gold crowns were fabricated from 10 conventional impressions. One hundred magnifications of the internal gaps of each crown were measured at 50 points with an optical microscope and these values were statistically analyzed using a two-way analysis of variance (α=0.05). The internal gap of the intraoral digital impression group was significantly larger than in the conventional impression group (P<0.05). No significant difference was observed between the CAD/CAM group and the cast group (P>0.05). Within the limitations of this in vitro study, crowns from intraoral digital impressions showed larger internal gap values than crowns from conventional impressions.http://dx.doi.org/10.1155/2016/7065454 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Tae-Gyung Kim Sungtae Kim Hyunmin Choi Jae-Hoon Lee Jae-Hong Kim Hong-Seok Moon |
spellingShingle |
Tae-Gyung Kim Sungtae Kim Hyunmin Choi Jae-Hoon Lee Jae-Hong Kim Hong-Seok Moon Clinical Acceptability of the Internal Gap of CAD/CAM PD-AG Crowns Using Intraoral Digital Impressions BioMed Research International |
author_facet |
Tae-Gyung Kim Sungtae Kim Hyunmin Choi Jae-Hoon Lee Jae-Hong Kim Hong-Seok Moon |
author_sort |
Tae-Gyung Kim |
title |
Clinical Acceptability of the Internal Gap of CAD/CAM PD-AG Crowns Using Intraoral Digital Impressions |
title_short |
Clinical Acceptability of the Internal Gap of CAD/CAM PD-AG Crowns Using Intraoral Digital Impressions |
title_full |
Clinical Acceptability of the Internal Gap of CAD/CAM PD-AG Crowns Using Intraoral Digital Impressions |
title_fullStr |
Clinical Acceptability of the Internal Gap of CAD/CAM PD-AG Crowns Using Intraoral Digital Impressions |
title_full_unstemmed |
Clinical Acceptability of the Internal Gap of CAD/CAM PD-AG Crowns Using Intraoral Digital Impressions |
title_sort |
clinical acceptability of the internal gap of cad/cam pd-ag crowns using intraoral digital impressions |
publisher |
Hindawi Limited |
series |
BioMed Research International |
issn |
2314-6133 2314-6141 |
publishDate |
2016-01-01 |
description |
The purpose of this study was to compare the internal gap between CAD/CAM palladium-silver crowns and cast gold crowns generated from intraoral digital versus conventional impressions and to determine the clinical acceptability. Nickel-chrome master dies were made from the prepared resin tooth with the conventional impression method (n=40). For ICC (Intraoral, CAD/CAM) group, 10 intraoral digital impressions were made, and 10 CAD/CAM crowns of a PD-AG (palladium-silver) machinable alloy were generated. For IC (Intraoral, Cast) group, 10 gold crowns were cast from ten intraoral digital impressions. For CCC (Conventional, CAD/CAM) group, 10 CAD/CAM PD-AG crowns were made using the conventional impression method. For CC (Conventional, Cast) group, 10 gold crowns were fabricated from 10 conventional impressions. One hundred magnifications of the internal gaps of each crown were measured at 50 points with an optical microscope and these values were statistically analyzed using a two-way analysis of variance (α=0.05). The internal gap of the intraoral digital impression group was significantly larger than in the conventional impression group (P<0.05). No significant difference was observed between the CAD/CAM group and the cast group (P>0.05). Within the limitations of this in vitro study, crowns from intraoral digital impressions showed larger internal gap values than crowns from conventional impressions. |
url |
http://dx.doi.org/10.1155/2016/7065454 |
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