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CAD-CAM complete removable dental prostheses: A double-blind, randomized, crossover clinical trial evaluating milled and 3D-printed dentures.

Authors
  • Srinivasan, Murali1
  • Kalberer, Nicole2
  • Fankhauser, Nicolas2
  • Naharro, Manuel3
  • Maniewicz, Sabrina3
  • Müller, Frauke4
  • 1 Clinic of General, Special care, and Geriatric dentistry, Centre of Dental Medicine, University of Zurich, Plattenstrasse 11, 8032 Zurich, Switzerland; Division of Gerodontology and Removable Prosthodontics, University Clinics of Dental Medicine, University of Geneva, Rue Michel-Servet 1, 1211 Geneva - 4, Switzerland. Electronic address: [email protected] , (Switzerland)
  • 2 Clinic of General, Special care, and Geriatric dentistry, Centre of Dental Medicine, University of Zurich, Plattenstrasse 11, 8032 Zurich, Switzerland. , (Switzerland)
  • 3 Division of Gerodontology and Removable Prosthodontics, University Clinics of Dental Medicine, University of Geneva, Rue Michel-Servet 1, 1211 Geneva - 4, Switzerland. , (Switzerland)
  • 4 Division of Gerodontology and Removable Prosthodontics, University Clinics of Dental Medicine, University of Geneva, Rue Michel-Servet 1, 1211 Geneva - 4, Switzerland; Department of Rehabilitation and Geriatrics, University Hospitals of Geneva, Chemin du Pont-Bochet 3, 1226 Thônex, Switzerland. , (Switzerland)
Type
Published Article
Journal
Journal of dentistry
Publication Date
Dec 01, 2021
Volume
115
Pages
103842–103842
Identifiers
DOI: 10.1016/j.jdent.2021.103842
PMID: 34637889
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

This double-blind, randomized, crossover, clinical trial aimed to evaluate and compare the differences between milled and 3D-printed complete removable dental prostheses (CRDPs). Fifteen edentulous patients (men: n = 10, women: n = 5; age: 66.7 ± 8.0 years) rehabilitated with conventional CRDPs were recruited for this trial. Participants were randomized to first receiving either the milled or 3D-printed CAD-CAM manufactured CRDPs and then after 6-weeks cross over to the other set. Both, clinicians and participants were blinded to the group allocation. Outcomes included patient's denture satisfaction (PDS), oral-health related quality of life (OHIP-EDENT), willingness-to-pay analysis, final choice (FC) of CRDPs, clinician's denture quality evaluation (CDQE), chewing efficiency (CE), maximum-voluntary-bite-force (MBF), and prosthodontic maintenance needs. The outcomes were measured at baseline (with old CRDPs), at 1 and 6 weeks after new CRDP insertion; following crossover with the second set of CRDPs, an identical protocol was followed. Generalized linear regression for repeated measures was used for statistical analysis with α=0.05. All participants completed the trial. 3D-printed CRDPs required more maintenance visits, adjustment time (p = 0.0003), and adjustment costs (p = 0.021). Patients were willing-to-pay an average of 606.67 Swiss Francs more than the actual cost for the milled CRDPs. There were no differences in the PDS, OHIP, FC, CDQE, CE, and MBF between the two CRDPs groups. The findings of this double-blind randomized crossover clinical trial confirm that both milled and 3D-printed CRDPs are valid treatment modalities for edentulous patients, with the latter performing inferiorly with regard to the time and costs involved with the prosthodontic aftercare, as well as the patients' willingness-to-pay. The findings of this trial provide evidence to help the clinician in choosing the appropriate CAD-CAM manufacturing process for fabricating the CRDPs. Copyright © 2021 The Authors. Published by Elsevier Ltd.. All rights reserved.

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