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Introduction To CAD-CAM:
CAD-CAM (computer assisted design – computer assisted manufacture) such as CEREC is a fast-developing field in dentistry that enables us to produce a biocompatible dental crown, inlay or overlay in a single visit.
This revolutionary technology allows our dentists to manufacture custom-made ceramic restorations more accurately and efficiently, saving you time spent in the dental chair.
CEREC is an acronym of Chairside Economical Restoration of Esthetic Ceramics. It is a sophisticated chairsi computerised system that efficiently designs and then manufactures high quality, metal-free dental restorations with its integrated milling unit.
It uses 3D photography and CAD-CAM technology (computer assisted design – computer assisted manufacture) to assist us in designing a virtual restoration i.e. an inlay, overlay, crown or bridge, without taking impressions. We are very often able to build the actual restoration while you are still in your dentist chair.
CAD.CAM (computer-aided design/computer-aided manufacturing) is a general term for a variety of technologies, including computer numerical control, rapid prototyping, component modeling and design software. CAD.CAM technologies were developed during the 1980s and are now widespread in industry and academia. CAD.CAM refers to the use of computers and computer-controlled manufacturing in the design of products.

Advantage: Software Flexibility
Using CAD software enables design changes to be made rapidly. Before CAD, a particular design change would have required a draftsperson to completely redraw the design to the new specification. CAD software allows designers to tinker with designs and make small changes on the fly. It can also be used to simulate the bCehavior of the design in software. For example, CAD software can be used to simulate the airflow around an engine. This allows for greater flexibility in the software design process.
Advantage: Design Flexibility
Another term for CAM is rapid prototyping. Rapid prototyping allows designers to construct physical prototypes during the design process. These physical prototypes can be used to test various aspects of the design. For example, if the goal is to design a steel object, then a prototype can be made out of transparent acrylic. The transparency of the acrylic prototype allows designers to view the pattern of stresses and strains within the object. This allows for greater flexibility in the physical design and prototyping process.

Advantage: Automatic Specification Checking
Using CAD software enables the designer to automatically check if the design is within specification. CAD software also enables clients to view designs at an earlier stage in the design process than is usually the case. CAM also enables clients to check the progress of functional and semi-functional prototypes at a much earlier stage than is possible in the traditional design process.

Summary of Advantages:
It’s easy to develop and edit 2D and 3D images and view them from different angles. Its easy to experiment with different finishes.
• Very realistic designs can be produced to show clients what their product will look like.
• Products can be machined at high speed 24 hours a day – this means lots of products can be made in a short time.
• CAM gives a high quality and more reliable finish – there is no human error.
• You can mass-produce complicated products, each part can be made by a different machine so they can be assembled quickly.
• Labour costs are low
• Designs can be sent around the world.

Disadvantage: Processing Power Limitations and Cost
CAD software often consumes large amounts of computer processing power. This requires high-quality computer hardware that can be costly. CAM requires advanced manufacturing devices that are also very expensive. The cost of hardware is a significant disadvantage of CAD.CAM and a major barrier to the wider uptake of CAD.CAM technologies.

Disadvantage: Software Complexity
As CAD software advances, it becomes more flexible and adaptable. However, this comes at the cost of making the software more complex. This complexity makes it more difficult for first-time users to learn the software. Combined with the cost of training personnel in CAD.CAM technologies, this complexity represents another disadvantage of CAD.CAM.
Summary of Disadvantages:
• Expensive.
• Computers can be affected by software problems, viruses and corrupted files meaning work could be lost.
• Fewer workers are needed, so unemployment might increase and traditional skills will be lost.

To get skilled with the knowledge of the CAD CAM Designing, visit our website for more information.