Journal article
An in vitro comparison of vertical marginal gaps of CAD/CAM titanium and conventional cast restorations
Journal of prosthodontics, Vol.17(5), pp.378-383
07/2008
DOI: 10.1111/j.1532-849X.2008.00302.x
PMID: 18355167
Abstract
To determine if there was a significant difference between the vertical marginal openings of cast restorations, computer-aided design, and computer-aided machining restorations.
Ten working dies were created from a single master die and used to fabricate ten restorations in each of the following groups: computer-aided design/computer-assisted machining (CAD/CAM), WAX/CAM, and WAX/CAST. The CAD/CAM titanium restorations were fabricated using the scanning and crown design modules of the KaVo Everest system. The WAX/CAM titanium restorations were fabricated using the double scan technique with the KaVo Everest system. The WAX/CAST high noble copings were fabricated using the conventional lost wax casting technique. The restorations were seated on the master die, and high-resolution digital photographs were made of the marginal area on all four sides. The vertical marginal opening was then measured using a calibrated digital software program. One-way ANOVA and Tukey's post hoc tests were used to determine the presence of statistically significant differences.
The vertical margin openings were CAD/CAM: 79.43 +/- 25.46 microm; WAX/CAM: 73.12 +/- 24.15 microm; WAX/CAST: 23.91 +/- 9.80 microm. There was a statistically significant difference between the WAX/CAST group and the remaining groups.
There was no difference between the vertical marginal gaps of the CAD/CAM and WAX/CAM. The WAX/CAST technique resulted in smaller vertical marginal gaps than either CAD/CAM or WAX/CAM.
Details
- Title: Subtitle
- An in vitro comparison of vertical marginal gaps of CAD/CAM titanium and conventional cast restorations
- Creators
- Philip L Tan - Department of Family Dentistry, University of Iowa College of Dentistry, Iowa City, IA, USA. ptanau@yahoo.com.auDavid G GrattonAna M Diaz-ArnoldDavid C Holmes
- Resource Type
- Journal article
- Publication Details
- Journal of prosthodontics, Vol.17(5), pp.378-383
- Publisher
- United States
- DOI
- 10.1111/j.1532-849X.2008.00302.x
- PMID
- 18355167
- ISSN
- 1059-941X
- eISSN
- 1532-849X
- Language
- English
- Date published
- 07/2008
- Academic Unit
- Oral and Maxillofacial Surgery; Family Dentistry; Hospital Dentistry
- Record Identifier
- 9984065981202771
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