EBD III - Advancements Flashcards
Aim of manufacturing in healthcare?
Improve pt care
Reduce costs
Increasing access
What is CADCAM?
Computer aided design and manufacturing
How does CADCAM process work?
- Data acquisition - e/g digital scanner = digital data
- Date processing - software process data
- Manufacturing - transform data into product
Types of ways to acquire data?
CT, MIR, laser, ultrasound, conventional x-ray
What is CT?
Radiographic technique to produce cross sectional image by scanning slice of tissue using fan x-ray
What is MRI?
Image obtained based different tissue characteristic - uses magnetic relaxation property of tissue
Adv of intra-oral scanner?
Pt comfort
Dentist auto-evaluate
Reduced model time
Favour clinic-lab communication
Disadv intra-oral scanner?
Cost investment
Training
Issue w/ data processing?
Automated process - not always accurate
Different types of manufacturing?
Subtractive - controlled material-removal process
Additive - build object in layer
What is stereolithography?
Additive process using controlled solidification of liquid resin
What is fused deposition?
Non-laser process that deposits layer of thermoplastic material - no post-polymerisation needed
What is laser powder forming technique?
High power laser - beam creates melt pool causing powder particles to melt together
How can drilling and cutting guides be produced?
Based on CT scans
Limitations of rapid prototyping?
Model shrinkage
Surface finish
Limitation of materials used
Different mechanical properties
