Machinable ceramics

CAD – CAM system

CAD

Computer aided manufacturing CAM

Computer aided design

Digitizing

Designing

Milling

• Intra – oral

• Extra – oral –Cast

–Die

–Pattern

–Impression

–Bite registration

Digitizing

Teeth powdering with

non-reflective

material

optical

impression

Contact

digitizing

Non-contact

digitizing

Designing

Milling

//en.wikipedia.org/wiki/Electroforming

Advantages

• Reduce production time.

• Introduce consistent and measurable

accuracy.

Disadvantages

• Expensive technique .

• Some are not user friendly and very

complicated .

• Micro fractures are generated during grinding

.

• Difficult to maintain dimensional accuracy.

Computer controlled construction of large dies

Computer controlled of milling of large copings

Milled Sintered

• Shrinkage 50% by volume, 21% linear

50% dense zirconia

Using of shrinkage free blanks (fully sintered blanks)

COPY MILLING