Biomaterials Lecture 10: CAD/CAM
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25 Terms
How long did it take for CAD/CAM to be used in dentistry?
50 years
What is the 3D model made from CAD/CAM scanning called?
Point cloud
What are the three factors fueling AI development?
1. Microprocessors
2. Algorithms for machine learning
3. Hardware development
What is the accuracy of the scan to the original tooth called in CAD/CAM?
Trueness
What is the consistency of scanning called in CAD/CAM?
Precision
What is the common method of CAD/CAM that finds a point in space relative to two other points?
Active triangulation
What is the method of CAD/CAM that rejects out-of-focus light for accurate scanning?
Confocal technology
What are the four secondary considerations for CAD/CAM?
1. Ease of use
2. Powder use
3. Cost
4. Tech support
Which two procedures are CAD/CAMs exceptionally well for?
1. Single unit restorations
2. Small fixed partial dentures
What are the two commonly used ceramics for CAD/CAM?
1. Lithium disilicate
2. Zirconia
What is the major concern with zirconia?
Shrinkage
What is the important step after CAD/CAM scanning and before putting in crowns?
Temporaries
What is the main issue with CAD/CAM?
Esthetics
Are ceramics used for printing in CAD/CAM currently?
No
What is the main factor that affects the printed model in CAD/CAM?
Type of 3D printer
What is the tool used to help put an implant in place?
Surgical guide
What is the method used to scan implants after they heal?
Scan bodies
What material is mostly used for implants?
Universal base
What addition improves the fractional strength of implants and creates a better marginal fit?
Titanium insert
Should titanium inserts be used for long crowns?
No
What is the modern method of scanning implants?
Photogrammetry
What procedure are printed dentures only good for?
Immediate dentures
What is the best kind of denture for use?
Milled denture
What are the two main advantages of milled dentures?
1. No shrinkage
2. Economical for patient
What tool is used to mimic jaw movements?
Articulators