curing lights

Question 1

different modes of cure?

Answer 1

Self cure- Chemical reaction when a base and catalyst are mixed.

Blue wave range light

Halogen light- Light delivered through a glass or plastic probe.
Comparatively slow.
Works best on small increments of composite.

High intensity plasma- Rapid curing.
High temperature (lamp is situated in base and cooled by a fan).

Laser based lights Fast curing-Some units take only 10 secs.

LED Lights - SOME OVERHEAD LIGHTS ON CHAIRS ARE NOW LED

Question 2

what is a monomer?

Answer 2

Present in composite and compomers.
Small molecules that bind to form Polymers

Light curing causes monomers to join together and become chain like. Known as polymers.

Question 3

what is a polymer?

Answer 3

loads of monomers joined together (chain of monomers polymers)

Question 4

what is a polymerisation initiator?

Answer 4

help the monomers become polymers.
The initiator causes monomers to link up with each other forming a hard substance.

Question 5

how much light does blue light absorb?

Answer 5

400-500nanometre is blue light.

Question 6

PRECAUTIONS AND PROBLEMS with curing lights?

Answer 6

Eye protection for operator, nurse and patient

Heat generation- Pulpal damage.

Inadequate light output. Regular checks must be made.