Biomaterials Tutorial 2
Biomaterials Mastery Quiz
Test your knowledge in the fascinating world of biomaterials with our engaging quiz! Designed for students, professionals, and anyone interested in the field, this quiz covers key concepts, properties, and applications of biodegradable polymers and materials.
Join the challenge now and discover:
- The essentials of degradability
- Types of biodegradable polymers
- Chemical reactions in polymer formation
For many biomaterias degradability is essential and this can be done by
Slow dissolution of the material
Breaking chemical bonds that break-up the material into small soluble components
Using the immune cells to clear materials and degrade them
All of the above
Biodegradable polymers offer the opportunity to remove a biomaterial from the body without additional surgery and polymers predominantly used for these applications are
Polyesters
Polyamides
Polyacrylates
All of the above
Which of the following polymers or structures are formed by a condensation reaction?
Polylactic acid, polyacrilic acid
Polylactic acid, polyurethane, polydimethylsilane
Polyethylene, polytetrafluoroethylene
All of the above
Polylactic acid has an ester bond which is composed out of
An alcohol group and an amine group
An alcohol group and carboxylic acid
An amine group and carboxylic acid
Is created by ring-opening reaction
The reverse reaction of a condensation is
A degradation reaction
A peptide formation
A hydrolysis reaction
Not there because it is not reversible due to the high stability
The degradability is fastest for
A polyester
Polyacrylate
Polyamide
Polypeptide
The speed of degradation is most influenced by
The presence of oxygen in the water
The presence of water
Aqueous solution with either high or low pH
The presence of proteins
When a condensation reaction occurs there is most likely formation of
Water
A small molecule
An ester
All of the above
Condensation polymers such as polylactic acids that are used for biomedical applications are made by
Condensation polymerization
Ring-opening polymerization
Free radical polymerization
Addition polymerization
The biodegradable polymer polylactic acid is frequently used because
The polymers are also present in the human body and are therefore non-toxic
It dissolves rapidly in the body and is cleared from the body via the kidneys/urine
Degrades in lactate that is used in the human body
It is isolated from nature and therefore easily accessible
The mechanism of formation of polylactic acid as used in clinical applications is
Chain growth mechanism
Step growth mechanism
Biochemical formation
Depends on the starting material
Polylactic acid and polyglucolic acid are often combined as copolymers because
Polylactic acid is much more expensive and therefore replaced with glycolic acid which is cheaper because it is not chiral
Polylactic acid degradation is affected when combined with polyglycolic acid
Polyglycolide is less toxic than polylactic acid because the degradation product of polylactic acid makes the environment acidic
Combining these polymers will enhance the strength of the final implant
Hydroxyapatite is a form of CalciumPhosphate which
Is the only component in our bone
Can be used to enhanc connction to natural bone as a coating
Dissolves readily and is therefore reusable
Can only be applied as a coating via plasma spray
In which of the following types of fixation of implants in the human body will the implant be replaced
Morphological fixation
Biological fixation
Bioactive fixation
Resorption
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