Custom tray

Question 1

Steps in custom tray fab (wash)

Answer 1

1. draw outlines
2. fill in undercuts
3. vaseline coat
4. adapt triad over cast
5. vent hole in palatal arch
6. trim edges
7. cure for 2 minutes
8. remove and cure other side for 6 min
9. square and bevel edges
10. add handle and cure for 5 min

Question 2

Lines in maxillary cast?

Answer 2

Hamular notches
3mm from freni
connect back

Question 3

Lines in mandibular?

Answer 3

go behind retromolar pads
dotted line at oblique ridges
3mm outside lingual frenum

Question 4

What is triad made of? nm of light to cure? devoid of…

Answer 4

urethane dimethacrylate, silica, camphorquinone
400-500nm
NO MMA

Question 5

acrylic shrinks by what % during curing?

Answer 5

7%

Question 6

Procedure for spaced tray?

Answer 6

1. no need to remove undercuts - spacer does this
2. adapt baseplate wax to cast
3. make 4x4 holes in lateral incisor and 1M
4. adapt triad into holes
5. adapt triad over cast, trim to wax spacer
6. cure for 2 minutes
7. remove wax and cure for 5 minutes
8. handle and cure for 5 minutes
9. smooth and bevel

Question 7

What are the pre-made edentulous trays called?

Answer 7

Massad