week 7

Question 1

denture repair

Answer 1

1) common in prosthetic dentistry
2) repair resin i methyl methacrylate with powder liquid components
3) repair gap of 1-2 mm is required for optimal strength and precision
4) repair resin bonds chemically with denture base and artificial tooth materials
5) weaker by 50%

Question 2

things to consider before attempting a repair

Answer 2

1) can it be performed reasonably
2) will it have predictable service expectancy
3) how long will it take
4) what will the lab need

Question 3

types of repair

Answer 3

1) replace missing broken tooth
2) repair denture base
3) add post dam
4) modify CD, conversions , etc

Question 4

before repair

Answer 4

1) always determine cause of failure
2) correct the problem before the repair
- or can fail again
3) arrange with the patient

Question 5

not to repair

Answer 5

1) prosthesis not worth fixing
2) multiple problems
- teeth or base worn
- poorfit
- poor esthetics
3) cost/benefit analysis

Question 6

today

Answer 6

1) remove #9 artificial tooth
- smooth everything
- repair gap will be evident
- make a groove in the tooth (diatoric)
2) mix putty to include #9 and two teeth on either side
- trim it so lingual is exposed for access

Question 7

repair resin

Answer 7

1) powder < 2 g and several drops of monomer
2) apply to tooth and socket
3) or bead brushing
4) cure time 15 mins in warm water
5) polishing points dark blue to light blue then yellow :3

Question 8

denture relining

Answer 8

1) residual ridge resorption
2) reline
- new intaglio surface in existing denture
- base remains intact
3) rebase
- replaces the entire denture base

Question 9

denture replining

Answer 9

1) chairside reliners are resin materials and are most convenient for patients
2) lab relining requires and impression and it is a better result

Question 10

denture adhesive

Answer 10

1) powder, cream, no pads
2) encourage thin denture adhesives
3) retention can be a matter of neuromuscular control which is gained by practice
4) soft or resilient reliners
- lynal ratio of 10cc to 4 ml

Question 11

deterioration

Answer 11

1) lynal reline is 1- several months
- does not like tablet cleaners

Question 12

readjustment

Answer 12

1) for every reline!!

Question 13

problems with relines

Answer 13

1) inaccurate impression
2) denture out of place laterally or anteriorly
4) thicker denture base
5) malocclusion
6) loose denture

Question 14

chairside hard reliners

Answer 14

1) convenient but technical and time demands for dentist

Question 15

special burs required for adjustment

Answer 15

1) poor ridge height
2) lack of attached mucosa