Biomaterials Tutorial 2

Create an illustration showing various biodegradable polymers, their structures, and applications in biomedical scenarios with a vibrant and educational design.

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

14 Questions4 MinutesCreated by LearningTree547

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 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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