Digital road map IN DENTAL IMPLANTOLOGY
Modern CAD-CAM technologies allow improving the quality of design and fabrication of structures fixed on implants, as well as for conventional prosthetic restorations. The possibilities that are provided expand the choice of treatment and ensure great speed and precision. The use of CAD-CAM technology began in the 1970s. Dr. Francois Dure formulated the hypothesis of transmission of an optical image from the prosthetic field. In 1983, he was the first to produce a single crown using CAD-CAM software - Computer Aided Design.
Dental Implant Prosthetics, 2nd…
This technology received an additional impetus in the mid-1980s with the work of Momann and Brandestini. At the heart of the technology are digital impressions that transmit digital data from the prosthetic field. They are registered using an intraoral scanner. It directly builds a 3D image of hard dental tissues and adjacent soft tissues. Sequentially builds a virtual 3D model of the upper jaw, lower jaw and both jaws in central occlusion. The matching of the three models in one common project is done by choosing common points. The assembled model is sent directly to the design computer for modeling as an STL file.
The advantages of the intraoral scanner are speed and the possibility to take the digital impression in the dental office and to carry out a direct assessment of the quality of the obtained model.
Misch’s Avoiding Complications in…
Digital Roadmap IN DENTAL IMPLANTOLOGY Another option for digital transmission of information is if a preliminary silicone impression is taken and scanned with a laboratory scanner. The lab scanner allows you to scan plaster models or printed models. Occlusal relationships can be transferred from an occluder, an articulator, or from a sampled occlusal register. The combination of the three models (upper jaw, lower jaw and in central occlusion) is done again by fixing common points. The models are matched to a match, which is registered by the homogeneity of the two different colored models.
Its advantages are high scanning accuracy and no risk of shifting the focus from the model.
The resulting 3D models provide an opportunity to inspect and evaluate their quality under magnification. With the correction function "With missing elements" that are not in the modeling box can be cut or filled. Also, the light and appearance of their surface can be changed, enlarged and examined in detail, in the three planes of space.
Misch’s Contemporary Implant Dentistry,…
The models formed in this way are sent as an STL file to the CAD-CAM design computer.
The 3D models obtained from the scan are opened in the computer's CAD-CAM design software.
There are various design software – Exocad, 3 shape dental, Dental wings, Romexis, Cerec. They provide different design solutions with similar general steps for doing it. After modeling the prosthetic structure, a separate STL file of the structure is created and sent to the CAD-CAM computer via an Internet connection.
The CAD-CAM software on the computer allows the positioning of the structure in the material from which it will be made and the operation of the milling machine.
Cosmetic Facial Surgery, 3rd…
In modern dental implantology, some authors apply a digital work protocol or a combined approach is elements of the classical method of implant prosthetics. The aspiration is in search of the optimal option for making a maximally precise construction. Other authors present and develop a fully digital working protocol that starts with digital planning, guided surgery, intraoral scanning of the implant, through digital impression transfer Scan body.
This is followed by 3D modeling of the virtual prosthetic construction using CAD-CAM software. The information is sent in the form of an STL file to the milling machine that creates the actual prosthetic structure (CAD-CAM – 1). The technology of machine milling enables the development of new materials for the manufacture of implant superstructures. They must meet the mechanical, functional and aesthetic requirements for dental materials.
- Digital road map
- IN DENTAL IMPLANTOLOGY
