week 2 lab quiz 7/feb

Multiple Choice

In class I preparation in primary molars, start preparation by penetrating the occlusal surface, at the central pit, with

• 330 Bur in a high-speed hand piece with water spray.

• 169L Bur in a high-speed hand piece with water spray.

• 4R Bur in a high-speed hand piece with water spray.

• Any of the above

Multiple Choice

In class I preparation of primary molars, which of the following is NOT correct?

• Establish a depth of 1-1.25 mm.

• Slightly round the pulpal floor.

• Establish buccal and lingual walls that diverge occlusally.

• Establish a sharp cavosurface angle (90) of the lateral wall.

Open Ended

Write the three occlusal Pits of the mandibualr first primary molars ?

Multiple Choice

Spoon excavtor can not be used in caries removal in primary dentition

• True

• False