– By subtraction (by removing materials): we talk about subtractive manufacturing, primarily machining via milling. The manufacturing process is conducted either: This is the fourth and last component in the CAD/CAM dental chain, and is responsible for manufacturing.It’s a programmable machine tool fitted with a numerical control. The first part of this article examining dental CAD/CAM will be dedicated to a definition of the CAD/CAM chain and its various components and their characteristics. We will then look at the various classifications within the dental CAD/CAM chain, and discuss its applications, benefits and limitations.ĬAD (computer aided design) is the process of creating virtual objects using a graphic representation. It includes a stage prior to the prosthetics design stage involving the “post-processing” of points obtained during the acquisition stage using optical impressions. At the end of this stage, the virtual model appears on the screen after digitisation.ĬAM (computer aided manufacturing) is the process of making objects transforming a virtual object (created by CAD) into a material object. This involves dedicated software to generate toolpaths, determining the tools’ positions during manufacturing.Ĥ th link: NCMT (Numerical control machine tools) This technology has continued to evolve and improve ever since in the field of odontology, carving itself a reputation as an indispensable tool in the digital age. Duret, CAD/CAM was born and went on to revolutionise the world of dentistry. In 1973, François Duret had the idea of transferring this concept to making dental prosthetics, and thus became the inventor of dental CAD/CAM, the foundations of which he discussed in his paper “Optical impression”.
Initially developed in the aeronautical and automobile industry in the 1960s, in order to standardise the production of routine, repetitive forms, CAD/CAM’s dentistry application was considered an ambitious and somewhat fanciful project, each prosthetic piece being unique and specific to the individual patient.
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