Journal article
Are different generations of CAD/CAM milling machines capable to produce restorations with similar quality?
Journal of clinical and experimental dentistry, Vol.8(4), pp.e423-428
10/01/2016
DOI: 10.4317/jced.52984
PMCID: PMC5045690
PMID: 27703611
Abstract
Different CAD/CAM machines' generation may impact the restoration overall quality. The present study evaluated the marginal fit of CAD/CAM restorations manufactured with different generations of CEREC milling unit systems.
Sixteen typodont teeth were divided into two groups (n=8) according to the machine's generation assigned. These are control group (G1): Cerec AC with Bluecam/Cerec 3 milling unit and (G2): Cerec AC with Bluecam/MC XL Premium Package milling unit. Scanning of the preparation were performed and crowns were milled using the Vita Mark II blocks. Blocks were cemented using epoxy glue on the pulpal floor only and finger pressure applied for 1 min. Upon completion of the cementation step, misfits between the restoration and abutment were measured by microphotography and the silicone replica technique using light body silicon material on Mesial (M) and Distal (D) surfaces.
Mean and SDs of marginal gaps in micrometers were: G1/M: 94.90 (±38.52), G1/D: 88.53 (±44.87), G2/M: 85.65 (±29.89), G2/D: 95.28 (±28.13). Two-way ANOVA indicated no significant differences among different groups (
>0.05); surface area (
>0.05) and the interaction (
>0.05). Overall, G2 had greater margin gaps than G1, however, without statistical difference (
>0.05).
Difference in milling unit generation did not significantly affect the marginal fit. Marginal gap means were in the range of the clinical acceptance levels for both generations of Cerec milling units, regardless the teeth site area.
CAD/CAM, margin, ceramics.
Details
- Title: Subtitle
- Are different generations of CAD/CAM milling machines capable to produce restorations with similar quality?
- Creators
- Renato Roperto - Case Western Reserve UniversityHussein Assaf - Case Western Reserve UniversityThiago Soares-Porto - Case Western Reserve UniversityLisa Lang - Case Western Reserve UniversitySorin Teich - Case Western Reserve University
- Resource Type
- Journal article
- Publication Details
- Journal of clinical and experimental dentistry, Vol.8(4), pp.e423-428
- DOI
- 10.4317/jced.52984
- PMID
- 27703611
- PMCID
- PMC5045690
- ISSN
- 1989-5488
- eISSN
- 1989-5488
- Language
- English
- Date published
- 10/01/2016
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984420842602771
Metrics
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