Lec 12 Custom cast dowel cores

Question 1

Direct wax patterns have been fabricated using either a ________or a ________- as reinforcement.

Answer 1

fissure bur
paper clip

Question 2

A _________ technique can be used to fabricate a dowel core pattern from acrylic resin.

Answer 2

direct tecnique

Question 3

The _____________ technique can be used for teeth with single or multiple roots. When a dowel core is made for a premolar with two canals, a dowel of optimal length is made for the most desirable canal, and the _________ accommodates a short key that serves as an antirotational device. It adds little or no retention.

Answer 3

• direct acrylic resin dowel core
• second canal

Question 4

For an anterior tooth, the definitive restoration will probably be a ____________ crown.

Answer 4

metal-ceramic

Question 5

Axial reduction and incisal reduction of 2.0 mm are accomplished with a what type of bur?

Answer 5

flat-end tapered diamond

Question 6

Facial reduction should be _________ mm deep axially.

Answer 6

1.0 to 1.2mm

Question 7

Lingual reduction is done with a small __________ bur.

Answer 7

football-shaped diamond

Question 8

The instruments of choice for removing the gutta-percha and enlarging the canal are?

Answer 8

Peeso reamers

Question 9

A ________ may be added to a prefabricated resin post (Parapost) for antirotational stabilization and some minimal additional retention.

Answer 9

parallel pin