MDS PREP
Which of the following statements is false
1) "Unsafe" dark room lights cause fogging of films
2) Alveolar resorption is easily recognized on X-ray
3) Decreasing focal skin distance increases radiation safety factor
4) None of the above
Radiology
Answer: 3
Speech retardation may be considered if the child does not talk by
1) 12 months
2) 18 months
3) 24 months
4) 36 months
Pedodontics
Answer: 4
The elastomeric impression material commonly supplied as a base paste & a liquid catalyst is :
1) Polysulfide
2) Condensation silicone
3) Addition silicone
4) Polyether
Dental Materials Answer: 2
The condensation silicone impression materials are supplied as a base paste and a low-viscosity liquid catalyst (or a paste catalyst).
Putty is a high-viscosity material that has been developed in order to overcome the large polymerization shrinkage of the condensation silicone impression materials.
All the other impression materials are generally supplied as catalyst paste & base paste.