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...

Full description

Saved in:
Bibliographic Details
Published in:BioMed research international 2016-01, Vol.2016 (2016), p.1-6
Main Authors: Kim, Jae-Hong, Lee, Jae-Hoon, Choi, Hyunmin, Kim, Sungtae, Kim, Tae-Gyung, Moon, Hong-Seok
Format: Article
Language:English
Subjects:
Accuracy
Alloys
CAD-CAM systems
Computer programs
Computer-Aided Design
Crowns
Dental Alloys - therapeutic use
Dental Porcelain - therapeutic use
Dentistry
Gold
Gold - therapeutic use
Humans
Laboratories
Light
Methods
Palladium
Prostheses
Silver
Studies
Surface Properties
Tooth - diagnostic imaging
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 (P0.05). Within the limitations of this in vitro study, crowns from intraoral digital impressions showed larger internal gap values than crowns from conventional impressions.
ISSN:2314-6133
2314-6141
DOI:10.1155/2016/7065454