What is the CAD-CAM System?
The CAD/CAM System is the latest technology in the field of fixed prosthesis.
- CAD (computer aided design) uses a specific software and a computer to create, modify, and analyse three-dimensional images. The mould from the patient’s mouth is inserted into a machine. Afterwards, it will be scanned and manipulated. This treatment enables the creation of CAD files from one or various dental devices.
- CAM (computer aided manufacturing) sends the obtained design to another machine or milling machine to ensure the production.
CAD-CAM System Advantages
- The computerised system and use of metallic or ceramic blocks ensure greater accuracy in fixed prosthesis structures in comparison with other processes such as rendering systems.
- CAD-CAM system technology enables higher quality control in ceramic prostheses fixed over dental implants. These prostheses require great contact accuracy.
- The CAD-CAM technology produces different structures, using different materials such as zirconium, cobalt-chrome, and others similar to titanium.
- The production of these dental structures is simple and has a higher quality in comparison with conventional rendering systems.
- This method provides higher aesthetical results with great endurance and abrasion similar to natural tooth enamel.
- By using this software, it is possible to show the coloured device, as the file will be stored in the computer. Therefore, the patient will be able to preview the final result before it is completed.
What are the ideal characteristics of a fixed prosthesis?
- A fixed ceramic crown should be well-shaped;
- Its format should fill up the required space;
- Dental occlusion should occur in an effortless and harmonious way;
- The crown colour should suit adjacent teeth for an aesthetical and natural appearance in the dental arch.
How are fixed crowns produced?
The production process of this dental device is highly important. They can be fabricated using conventional rendering systems or through the use of state-of-the-art technology such as CAD/CAM. Over the years, the techniques and used materials have been the subject of intensive research to facilitate and speed up the production process as well as increase its resistance, durability, and quality.
The success of this procedure depends on dentist expertise and the technique used during surgery. Another relevant factor is ceramic crowns. While the titanium implant acts as a support to the new tooth, this artificial tooth or crown is the visible part of the treatment. A great aesthetical appearance is essential.
What are ceramic crowns?
Ceramic crowns are artificial dental structures, completely identical to natural teeth and produced in laboratories. If the tooth root is in good condition, they are used to cover one or various teeth that may have been destroyed by tooth decay or an accident. These crowns are also used for missing teeth in fixed rehabilitation with dental implants. If necessary, crowns may be connected to create a ceramic bridge.