Occlusion Blocks

Enumerate the criteria of record base

(a)  

All of the following are materials used for temporary trial denature base except

• Chemical cured acrylic resin
• Shellac base plate
• heat cured acrylic resin
• swaged tin

All of the following are disadvantages of heat cured acrylic resin except

• time consuming
• exposed to second cycle of curing thus wrapage
• mounting cast may be destructed
• difficult in relining

Advantage of metal bases is

• No acrylic wrapage
• less deformation in function
• good thermal conductivity
• all of the above

Lower posterior occlusion rim should not exceed

• Maxillary tuberosity
• incisive papilla
• 2/3 retromolar pad
• all of the above

It is used with graphic tracing method

(a)  

It is used with functional chew in technique

• wax occlusion rims
• modeling compound occlusion rims
• plaster and pumice rims
• none of the above

The most accurate guide for midline is

(a)  

Construction of occlusion blocks is made on a study cast.

• true
• False

A spacer should be made to record block

• true
• false