CAD-CAM technology in dentistry

In the field of fixed prostheses, zirconia placements manufactured by means of CAD/CAM technology is considered "high-tech" today. Due to the substances used and the precise technology applied, the very prosthesis inducing no metal allergy and offering long-term solution can be manufactured in this way providing almost perfect dental restoration also in aesthetic terms.

CAD/CAM is the English abbreviation for the manufacturing process of the product concerned (dental prosthesis in our case) including the following:

Computer-aided designing and manufacturing

The work process is the following:
1. The dentist prepares the shoulders of the needed teeth in the mouth and takes impression by sulcus forming.
2. The prosthetic laboratory prepares the mould on the basis of this impression.
3. We digitalize the mould by laser scanner and make it graphically visible on the computer screen.
4. By means of special software, the dental technician designs the shape, size, position etc. of the prosthesis (CAD).
5. The design shall be sent over to a milling centre abroad (in Germany or Sweden, as a rule) where the computer-controlled milling machine cuts out the designed shape with micron precision from the requested material. (CAM)
6. After three or four days, the dental laboratory receives by express messenger the very accurate robot-made skeleton of the crown/bridge from abroad.
7. The dental technician burns onto this skeleton the ceramic plating identical with the tooth colour of the patient, the result of which is the ready prosthesis.
8. In the dental surgery, the dentist glues in the restoration in the mouth of the patient.

The above process reflects the advantages of this technology including:
- Accuracy guaranteed by industrial technology
- Aesthetic replacement of missing teeth* ( light transmission)
- Metal allergy excluded*
- No breaking, cracking, stress, bubbles etc. in the course of manufacturing and using
* in case of using zirconia

As a matter of course, CAD-CAM technology cannot be used only to manufacture highly precise zircon work but also for CrCo metal, gold, synthetics etc.

In spite of this, high-tech tooth restoration spreads slowly in Hungary since its price is 3 or 4 times higher than of the metal-ceramics prosthesis manufactured in the conventional way. Unfortunately, the bad habit that people try to economize on their health has already become routine in Hungary. Since the change of the political regime, people have spent much on new cars, hi-fi sets and other commodities not really important in life but do not spend even the required minimum on their own body and health. The major part of the population neglect tooth restoration, the replacement of missing teeth, and if they still decide to act, price will dominate instead of quality since they forget the eternal truth that cheap products are more expensive on the long run.


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