Journal article
Clinical Fitting and Adjustment Time for Implant-Supported Crowns Comparing Digital and Conventional Workflows.
- Joda T Department of Reconstructive Dentistry, University of Bern, Bern, Switzerland. tim.joda@zmk.unibe.ch.
- Katsoulis J Department of Reconstructive Dentistry, University of Bern, Bern, Switzerland.
- Brägger U Department of Reconstructive Dentistry, University of Bern, Bern, Switzerland.
- 2015-09-24
Published in:
- Clinical implant dentistry and related research. - 2016
CAD/CAM
conventional
cross-mounting
dental implant crown
digital
intraoral optical scan
workflow
Adult
Aged
Cross-Over Studies
Crowns
Dental Abutments
Dental Implants
Female
Humans
Male
Middle Aged
Prospective Studies
Prosthesis Fitting
Workflow
English
PURPOSE
The aim of this prospective cohort study was to investigate clinical and laboratory performance of implant-supported reconstructions comparing the digital to the conventional workflow.
MATERIALS AND METHODS
Twenty study participants were treated in a cross-over design for single-tooth replacement in posterior sites, each with a customized titanium abutment plus computer-assisted design and computer-assisted manufacturing (CAD/CAM)-zirconia-suprastructure (test: digital workflow; n = 20) and a standardized titanium abutment plus PFM-crown (control: conventional pathway; n = 20). Evaluation of the 40 reconstructions included: 1) feasibility of laboratory cross-mounting of each abutment-crown-connection, and 2) assessment of adaptation time for clinical adjustments of interproximal and occlusal surfaces. Statistical analyses were performed using the exact Wilcoxon rank sum tests.
RESULTS
Laboratory cross-mounting was feasible for three reconstruction pairings revealing a 15% vice versa transfer success rate. All implant crowns could be provided successfully within two clinical appointments, independently of the workflow used. The mean clinical adjustment time was significantly lower (p < .001) for test reconstructions from the digital workflow with 2.2 min (standard deviation [SD] ± 2.1) compared with the ones from the conventional pathway with 6.0 min (SD ± 3.9).
CONCLUSIONS
The digital workflow was almost threefold more efficient than the established conventional pathway for fixed implant-supported crowns. Clinical fitting could be predictably achieved with no or minor adjustments within the digital process of intraoral scanning plus CAD/CAM technology.
The aim of this prospective cohort study was to investigate clinical and laboratory performance of implant-supported reconstructions comparing the digital to the conventional workflow.
MATERIALS AND METHODS
Twenty study participants were treated in a cross-over design for single-tooth replacement in posterior sites, each with a customized titanium abutment plus computer-assisted design and computer-assisted manufacturing (CAD/CAM)-zirconia-suprastructure (test: digital workflow; n = 20) and a standardized titanium abutment plus PFM-crown (control: conventional pathway; n = 20). Evaluation of the 40 reconstructions included: 1) feasibility of laboratory cross-mounting of each abutment-crown-connection, and 2) assessment of adaptation time for clinical adjustments of interproximal and occlusal surfaces. Statistical analyses were performed using the exact Wilcoxon rank sum tests.
RESULTS
Laboratory cross-mounting was feasible for three reconstruction pairings revealing a 15% vice versa transfer success rate. All implant crowns could be provided successfully within two clinical appointments, independently of the workflow used. The mean clinical adjustment time was significantly lower (p < .001) for test reconstructions from the digital workflow with 2.2 min (standard deviation [SD] ± 2.1) compared with the ones from the conventional pathway with 6.0 min (SD ± 3.9).
CONCLUSIONS
The digital workflow was almost threefold more efficient than the established conventional pathway for fixed implant-supported crowns. Clinical fitting could be predictably achieved with no or minor adjustments within the digital process of intraoral scanning plus CAD/CAM technology.
- Language
-
- English
- Open access status
- closed
- Identifiers
-
- DOI 10.1111/cid.12377
- PMID 26395013
- Persistent URL
- https://folia.unifr.ch/global/documents/263571
Statistics
Document views: 30
File downloads: