CAD/CAM Removable Dental Prostheses: a Review of Digital Impression Techniques for Edentulous Arches and Advancements on Design and Manufacturing Systems
- 256 Downloads
Purpose of Review
The aim of this article is to provide an overview of CAD/CAM removable dental prostheses in the treatment of completely edentulous patients.
Computer-aided design/computer-aided manufacturing protocols continue to evolve in many areas in dentistry including removable complete dentures. Current protocols are advantageous in decreasing the number of clinical appointments needed, which may reduce the distress in elderly with limited access to care. In addition, CAD/CAM complete dentures are fabricated using standardized techniques using high-value quality controlled materials. Laboratory tabletop scanners are being used predominantly for the digitization of conventional impressions or dental casts. Further research is needed to further advance existing intra-oral scanners in digital impressioning of the completely edentulous jaws.
Use of digital technology in complete denture manufacturing provides prostheses with improved quality such as reduced porosity, polymerization shrinkage, and improved retention. Presence of digital depository data allows replacement dentures to be fabricated in case they are lost or damaged.
KeywordsCAD/CAM Complete dentures Digital denture Edentulism
Compliance with Ethical Standards
Conflict of Interest
The authors declare that they have no conflict of interest.
Human and Animal Rights and Informed Consent
This article does not contain any studies with human or animal subjects performed by any of the authors.
Papers of particular interest, published recently, have been highlighted as: • Of importance •• Of major importance
- 13.•• Patzelt SB, Vonau S, Stampf S, Att W. Assessing the feasibility and accuracy of digitizing edentulous jaws. J Am Dent Assoc. 2013;144(8):914–20. This paper reported on the accuracy and precision for current models of intra-oral optical scanners in obtaining digital impressions of the completely edentulous arches. CrossRefPubMedGoogle Scholar
- 21.•• Kattadiyil MT, Jekki R, Goodacre CJ, Baba NZ. Comparison of treatment outcomes in digital and conventional complete removable dental prosthesis fabrications in a predoctoral setting. J Prosthet Dent. 2015;114(6):818–25. This paper provides clinical data comparing the outcomes of digital and conventional dentures in pre-doctoral clinical settings. Higher patients satisfaction and improved retention was reported with digital dentures. CrossRefPubMedGoogle Scholar
- 22.Lozada JL, Garbacea A, Goodacre CJ, Kattadiyil MT. Use of a digitally planned and fabricated mandibular complete denture for easy conversion to an immediately loaded provisional fixed complete denture. Part 1. Planning and surgical phase. Int J Prosthodont. 2014;27(5):417–21.CrossRefPubMedGoogle Scholar
- 24.• Schweiger J, Guth JF, Edelhoff D, Stumbaum J. Virtual evaluation for CAD-CAM-fabricated complete dentures. J Prosthet Dent. 2017;117(1):28–33. This is a case-report that provides a demonstration for a workflow that allows a virtual simulated evaluation of the denture set-up. This was completed through integration of an impression occlusion rim and an extra-oral face scan. CrossRefPubMedGoogle Scholar
- 28.Anitha R, Arunachalam S, Radhakrishnan P. Critical parameters influencing the quality of prototypes in fused deposition modeling. J Mater Process Tech. 2001;118:–385.Google Scholar
- 34.• AlHelal A, AlRumaih HS, Kattadiyil MT, Baba NZ, Goodacre CJ. Comparison of retention between maxillary milled and conventional denture bases: a clinical study. J Prosthet Dent. 2016. This in-vitro study provides comparative data regarding retention of conventionally and digitally manufactured complete dentures. Results demonstrated better retention with digital dentures. Google Scholar
- 36.Steinmassl PA, Wiedemair V, Huck C, Klaunzer F, Steinmassl O, Grunert I, et al. Do CAD/CAM dentures really release less monomer than conventional dentures? Clin Oral Investig 2016.Google Scholar
- 37.• Bidra AS, Farrell K, Burnham D, Dhingra A, Taylor TD, Kuo CL. Prospective cohort pilot study of 2-visit CAD/CAM monolithic complete dentures and implant-retained overdentures: clinical and patient-centered outcomes. J Prosthet Dent. 2016;115(5):578–586.e1. A prospective trial where clinical and patient-centered outcomes for CAD/CAM monolithic dentures (AvaDent dentures) fabricated in 2 visits were evaluated. Favorable outcomes were reported. CrossRefPubMedGoogle Scholar