TU Wien:Biokompatible Werkstoffe VO (Stampfl)/Prüfung 29.03.2022

Fragen waren (weiß nicht mehr alles aber naja)

- What is Genotoxicity and what tests you can use? (I told him I did not learn the tests, so he asked me about Pyrogen testing instead)
- From Pyrogen testing we switched to sterilisation methods

-- he asked how to determine how good sterilisation works -> SAL, and asked the definition of SAL -- he asked for a viable sterilisation method for a material with metal + electronics + polymer (I choose Gas) -- further explain one Gas sterilisation method -- what is the problem with radiation sterilisation? --- main chain scission --- how to decrease main chain scission -> with vitamin E gas I think

- Explain Ceramics and Glass ceramics

-- why are ceramics used (what is so good about them) -- name one ceramic -- name one biocompatible ceramic

- strain stress curve and explain important points
   -- definition of strength and stiffness
- Do we use pure metals in biomechanics?

-- what is a good metal (i choose Ti) --- what makes Ti so great

- When implanting a metal after a fracture, what can be problematic -> stress shielding

Fragen anderer Studenten aus WhatsApp Gruppe zusammekopiert: 1. Classification of MDs and examples 2. Superelasticity 3. Polymerisation 4. Tensile Test and the important values 5. forgot

1. Classification of MDs and examples 2. What are Ceramics, inorganic glasses, glass ceramics? 3. Zirconia (explain transformation strengthening) 4. Give and explain the formula for fracture mechanics of ceramics. Where in this formula are the differences of materials? (in the critical K = K_c) What are typical K_c values for different materials? 5. What composites are used in dental fillings? (Ceramics + Monomers + Photoinitiators)

1. Medical devices - groups and examples 2. Sterilization - definition, SAL, the overview how they are grouped, explain gas sterilization (I took EO as example), Example for a material you can sterilize with it (polymere) 3. Polymere - what is a Polymere?, different bonds that are involved, types of polymeres (thermpolasts, endoplasts, duroplasts) and their structure/bods/behaviour 4. Keramics - generall overview, describe Zirkoniumdoixid and how it is transformed

Foreign body reaction Lithography Hydrogels Polymers Titanium

Classification of medical devices, Definitions of: Stiffness, strength, hardness Ceramics, glass & glass ceramics, Zirconia and it'ss phase transformation