Biomaterials Quiz Biomaterials Quiz 0 Question 1 Why is Teflon used as a coating
ID: 3512654 • Letter: B
Question
Biomaterials Quiz Biomaterials Quiz 0 Question 1 Why is Teflon used as a coating on mechanical heart valves? Question 2 Which of these is a primary advantage of using a biological heart valve over a mechanical one? To prevent wear resistanceFor very low friction . Ability to self-repair Cost Increased strength Enhanced rigidity Reliability Durability Choose one of the above answers (only your first choice will count) Choose on·of count) above answers (only your first choice will Answer: Answer: Biomaterials Quiz Question 3 . which of these materials is NOT used to build the ball section of a hip joint? Question 4 Which property below would you NOT associate with the metals used to make the ball section of the hip joint? Chromium Cobalt High ductility . Wear resistance Silicon Titanium High tensile strength Sturdiness Choose one of the above answers (only your first choice will count) Choose one of the above answers (only your fiest choice will count) Answer: Answer:Explanation / Answer
Answer-1: For very low friction.
Teflon has low coefficient of friction and is relatively inert and highly biocompatible .
Answer-2: Ability to self repair .
Biological valves has anti coagulant property and helps in prevention of clotting .
Answer-3: Silicon.
All the other metals are used in different combinations.
Answer-4: High ductility.
Many cobalt based alloys used are wear resistance ball heads used for fracture resistance anchorage stems.
Other metals are strong, sturdy and flexible and also has tensile strength.
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