Abstract
AimThis study proposes the replacement of all the physical devices used in the manufacturing of conventional prostheses through the use of digital tools, such as 3D scanners, CAD design software, 3D implants files, rapid prototyping machines or reverse engineering software, in order to develop laboratory work models from which to finish coatings for dental prostheses. Different types of dental prosthetic structures are used, which were adjusted by a non-rotatory threaded fixing system.MethodFrom a digital process, the relative positions of dental implants, soft tissue and adjacent teeth of edentulous or partially edentulous patients has been captured, and a maser working model which accurately replicates data relating to the patients oral cavity has been through treatment of three-dimensional digital data.ResultsCompared with the conventional master cast, the results show a significant cost savings in attachments, as well as an increase in the quality of reproduction and accuracy of the master cast, with the consequent reduction in the number of patient consultation visits. The combination of software and hardware three-dimensional tools allows the optimization of the planning of dental implant-supported rehabilitations protocol, improving the predictability of clinical treatments and the production cost savings of master casts for restorations upon implants.
Highlights
The traditional prosthesis fabrication process involves much handwork by dentists and dental technicians
The combination of software and hardware three-dimensional tools allows the optimization of the planning of dental implant-supported rehabilitations protocol, improving the predictability of clinical treatments and the production cost savings of master casts for restorations upon implants
The process of creating the master cast without analogs from digitally data obtained by photogrammetry and subsequently treated with reverse engineering software is described in detail in Fig 3: Master cast created by 3D printing without analogs: master cast functionality
Summary
The traditional prosthesis fabrication process involves much handwork by dentists and dental technicians. The reason is that there was no available image data to construct computer aided design (CAD) models for practical prostheses, or a CAD model could not be constructed due PLOS ONE | DOI:10.1371/journal.pone.0145253. New Design for Digital Master Casts to the complexity of the prosthesis. The fabrication of dental prostheses is a problem. Practical dental restorations often have freeform surfaces (especially crowns). Bridges and implant structures tend to have features such as overhangs, undercuts, sharp corners, etc. Bridges and implant structures tend to have features such as overhangs, undercuts, sharp corners, etc. [1]
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