CAD/CAM to fabricate ceramic implant abutments and crowns: a preliminary in vitro study

Alfarsi, M. A., Okutan, H. Mehmet and Bickel, M. (2009) CAD/CAM to fabricate ceramic implant abutments and crowns: a preliminary in vitro study. Australian Dental Journal, 54 1: 12-16. doi:10.1111/j.1834-7819.2008.01082.x


Author Alfarsi, M. A.
Okutan, H. Mehmet
Bickel, M.
Title CAD/CAM to fabricate ceramic implant abutments and crowns: a preliminary in vitro study
Formatted title
CAD/CAM to fabricate ceramic implant abutments and crowns: a preliminary in vitro study
Journal name Australian Dental Journal   Check publisher's open access policy
ISSN 0045-0421
1834-7819
Publication date 2009-03-01
Sub-type Article (original research)
DOI 10.1111/j.1834-7819.2008.01082.x
Volume 54
Issue 1
Start page 12
End page 16
Total pages 5
Editor Bartold, Mark
Place of publication St Leonards, NSW, Australia
Publisher Wiley-Blackwell Publishing
Collection year 2010
Language eng
Subject C1
920402 Dental Health
110501 Dental Materials and Equipment
Formatted abstract
Background: This study evaluated the feasibility of fabricating implant abutments and crowns from pre-sintered feldspathic porcelain blocks using the chair-side CAD/CAM, CEREC3D (R) system.
Methods: Thirty-two implant analogues were divided into two groups. In the control group, prefabricated machined anatomical titanium (Ti) abutments were screw-retained to the analogues. In the test group, machined feldspathic porcelain abutments were cemented on prefabricated machined Ti links and screw-retained to the implant analogues. These feldspathic porcelain abutments were fabricated out of pre-sintered feldspathic porcelain blocks as duplicates of the abutments in the control group using the CAD/CAM, CEREC3D(R) system. Thirty-two feldspathic porcelain crowns, also fabricated out of pre-sintered ceramic blocks, were then cemented with resin cement on all the abutments in both groups. All samples were subsequently subjected to fracture strength testing under static load. An unpaired t-test was used to compare fracture load values between the two groups.
Results: The test group using feldspathic porcelain abutments and crowns showed statistically significant higher mean fracture strength than the control group with the Ti abutments and feldspathic porcelain crowns.
Conclusions: This preliminary study showed that the chair-side CAD/CAM technology can be utilized to fabricate customized ceramic abutments with their associated ceramic crowns using pre-sintered feldspathic porcelain blocks.
Keyword Abutment
CAD/CAM
Ceramic
Implant
Prosthodontics
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Dentistry Publications
 
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Created: Thu, 15 Oct 2009, 01:46:10 EST by Margot Dallinger on behalf of School of Dentistry