Prosthodontics - denture prescription

Question 1

Lab prescription - master impressions

Answer 1

Please pour up impression in 50:50 plaster and stone, construct special tray with 3mm spacing (for alginate) with extra oral handle

Question 2

Lab prescription - jaw reg

Answer 2

Please pour up impressions in 100% dental stone and construct upper and lower wax occlusal rims

Question 3

Lab prescription - tooth trial

Answer 3

Please mount casts to registration recorded on average value articulator, set upper teeth to record block, and lower teeth to upper teeth

Question 4

Lab prescription - delivery

Answer 4

Please finish in heat cure PMMA (remember to mark post dam on cast)

Question 5

Why is the smile line marked on the record block?

Answer 5

To gauge the amount of tooth showing when patient smiles

Question 6

Why is the centre line marked on the record block?

Answer 6

Midline of teeth matches midline of face

Question 7

Why is the canine line marked on the record block?

Answer 7

Dictates the size of tooth used

Question 8

Why is the residual alveolar line marked on the record block?

Answer 8

So that the teeth are set over the ridge (lower)

Question 9

Why is the alveolar contour line marked on the record block?

Answer 9

To stop teeth being placed on a slope and displacing during function

Question 10

Lab prescription - retrial

Answer 10

Please remount casts and make X changes for retrial