W1: Introduction to Dental Restorative Materials

Question 1

WHY technique is important when restoring?

Answer 1

There is no perfect material. But improper technique can jeapordise clinical efficacy

Question 2

Main purpose of filling

Answer 2

shape, function, look

Question 3

main material of choice

Answer 3

composite (others GI and Dental amalgam)

Question 4

Are all restorations permanent?

Answer 4

No, advise pt. that all fillings require replacement.

‘long term’ is better

communicate factors that may negatively affect outcome

Question 5

is amalgams used?

Answer 5

less than 1% in aust schools, thats why we must learn.

Question 6

When is amalgams preferred

Answer 6

complex cusp required restorations, metal is better mechanically

Question 7

When moisture control is required

Answer 7

composite= needed

Question 8

how many factors are involved clinically when restoring?

Answer 8

3 main, even more…

that’ss why we have many materials

Question 9

what must we also consider when choosing restorative material

Answer 9

• on our skill and knowledge (e.g. broken light cure, cant expect composite to last long)
• patient: caries risk= no composite, consider anticaries like GIC
• bruxism= not good composite
• ageing= poor moisture control so compromises (cannot rubber dam 3 hr sesh)
• meds
• diet nutrition

Question 10

clinical challenges:

Answer 10

1. no material (esp comp and GIC) likes moisture. NO SALIVA, or have to stop and restart
2. remaining tooth structure is little. esp pulpal exposure= decrease of success
3. occlusion= may not be rel class I single tooth, but whole quadrant we need to keep natural occlusal bite. always access with articulating paper

Question 11

why is margin of resto important?

Answer 11

cannot be in way. contact with opp teeth should not be in between. lead to tension, marginal discolouration

Question 12

importance of occlusion

Answer 12

if not natural bite teeth can move

Question 13

Indication

Answer 13

Amalgam= few indication
mainly comp/GIC

Question 14

When to not use

Answer 14

• allergy (contact dermititis)
• don’t use resin material

Question 15

Do composites last longer than amalgams?

Answer 15

Yes, pretty good now a days.

75K pt, more than 350K resto

failure rate annually- comp and amalgam in post teeth (comp has lower failure

Question 16

how long can you expect comp to last

Answer 16

10 years if take care.

Could have wear, colour etc but if no bother don’t have to change

Question 17

biggest prob with composite?

Answer 17

secondary caries class II of rubber dam

• should use rubber dam, if not then use teflon

Question 18

in small marginal gaps we cannot use wedge what can we use for MC?

Answer 18

teflon

Question 19

LC is important

Answer 19

need to be above or it may not set properly

Question 20

Which part of teeth is hard to adhesion weak?

Answer 20

dentine