1- dimpling is to:
A- increase undercut.
B-remove undercut.
2- we don't fire opaque with dentine because:
A- they have 2 different temperature.
B- because opaque make unwanted line or color in dentine surfaces.
3- last process in complete denture fabrication is:
A- packing.
B- finishing and polishing.
C- insertion.
4- agar-agar material is made of:
A- fungi. B- gelatin.
C- volcano. D- seaweed.
5- temporary cement used in the clinic is.
A- zinc oxide euginol.
B- zinc phosphate.
6- the surface to be cemented should be:
A- wet.
B- dry.
7- primary impression of partial denture is taken with:
A- plaster.
B- compound.
C- alginate.
8- children teeth in one arch are:
A- 16 b-32
c- 10 d-8
9- the horizontal arm of nay's surveyor is:
A- movable.
B- immovable.
10- which part of the surveyor is moved up and down?
A- vertical arm.
B- swivel arm.
C- horizontal arm.
11- with 0.25 undercut gauge we use ________ clasp;
a- wrought wire.
B- gold.
C- co-cr.
12- plastic trays are:
A- autoclaved. B- disinfected.
C- re-used. D- disposable.
13- the handle of the custom tray should be:
A- l shape. B-s shape.
C- inclined distally. D-inclined mesially.
14- guide plane ate a component of:
A- minor connector.
B- clasp.
C- major connector.
15- reciprocation is type of:
A- clasp b- minor connector.
C-direct retainer d- indirect retainer.
16- potassium sulphate in gypsum product acts as:
A- inhibitor b- initiator
c- retarder d- activator.
17- if gypsum is heated in a closed container under pressure and heat the result is:
A- plaster. B- stone
c- die stone d- investment.
18- when mix a plaster in old bowl containing old mix of plaster it will:
A- increase setting time.
B- decrease setting time.
C- no effect.
19- increase rate of spatulation when mixing the plaster it will:
A- increase setting time.
B- decrease setting time.
C- no effect.
20- non-perforated stock tray use with:
A- alginate. B- elastomers.
C- plaster. D- none of the above.
21- which of these clasps is gingival approach?
A- i-bar b- rpa clasp
22- which of these clasps are occlusally approaches?
A- i-bar b- y-bar c-rpa
d- t-bar e- ra
23- which edge of the incisal edge of the central incisor is 90 degree?
A- mesio-labial edge b- disto-labial edge.
24-b-hemihydrate is the formula of:
A- dental plaster. B-stone
c- die stone.
25- the indicator of the gypsum initial setting is:
A- shiny surface. B- matt surface
c- solid surface.
26- development stages of porcelain firing are
1-low bisque.
2- high bisque.
3-medium bisque.
A- 2, 3, 1 b-1, 3, 2
27- density is:
A- mass/volume
b- volume/ mass
c- mass x volume.
There is also some questions about the tooth morphology but i cant remembeer the question exactly
i willl inshaallah add more questionas i remember.
الأربعاء أبريل 25, 2012 12:04 am
