Evaluation of a complete denture trial method applying rapid prototyping

Abstract

A new trial method for complete dentures using rapid prototyping (RP) was compared with the conventional method. Wax dentures were fabricated for 10 edentulous patients. Cone-beam CT was used to scan the wax dentures. Using 3D computer-aided design software, seven 3D denture images with different artificial teeth arrangements were made and seven trial dentures per patient were fabricated accordingly. Two prosthodontists performed a denture try-in for one patient using both conventional and RP methods. The prosthodontists and patients rated satisfaction for both methods using a visual analogue scale. Satisfaction ratings with both conventional and RP methods were compared using the Wilcoxon signed-rank test. Regarding prosthodontist's ratings, esthetics and stability were rated significantly higher with the conventional method than with the RP method, whereas chair time was rated significantly longer with the RP method than with the conventional method. Although further improvements are needed, the trial method applying RP seems promising.

Trends in Computer-Aided Manufacturing in Prosthodontics: A Review of the Available Streams

“…This includes thermoplastic materials, such as waxes, resins, or fused filament, which pass through a heated nozzle and solidifies immediately after extrusion. Alternatively, liquid ceramic or resin materials with a binder can be printed [35, 118], which, following deposition, solidifies immediately [119, 120]. Some systems also allow for multicolour production [118].…”

“…Alternatively, liquid ceramic or resin materials with a binder can be printed [35, 118], which, following deposition, solidifies immediately [119, 120]. Some systems also allow for multicolour production [118]. This approach is used in dentistry to fabricate dental models, facial prosthesis patterns, acrylic prostheses, investing flasks, and castable or ceramic frameworks [35, 118].…”

CAD/CAM milled complete removable dental prostheses: An <i>in vitro</i> evaluation of biocompatibility, mechanical properties, and surface roughness

“…Clinical success, in terms of patient satisfaction and patient preference for the CAD/CAM manufactured CRDPs, has been reported in literature [4][5][6] . In terms of the trueness of the CAD/CAM fabricated CRDPs, when compared to conventional CRDPs, was found to be non-inferior to a conventional PMMA and within the clinically acceptable range [7][8][9][10] . The conventional 'flask-pack-press' technique for the fabrication of CRDPs has been employed for more than half-a-century and can be considered as a time-tested "gold standard" procedure.…”

The Evaluation of Working Casts Prepared from Digital Impressions

“…RP has recently been successfully applied in various medical fields, such as in the fabrication of implant surgical guides 16,17 and maxillofacial prosthetics 18,19 and in frameworks for removable partial dentures. 20 Recently, the use of RP in the frameworks of fixed restorations was studied, 21 and the results of this study seemed to be promising, even though further improvements are needed.…”