Perforation repair materials

Calcium silicate based materials were first used in dentistry in

• 1878

• 1860

• 1858

• 1978

First Calcium silicate based material used in dentistry

• MTA

• Portland cement

• Calcium enriched mixture

• Bioaggregate

MTA Angelus belongs to

• Generation I

• Generation II

• Generation III

• Generation IV

Grey colour in MTA powder contributes to

• Lead

• Aluminium

• Iron

• Silver

What component was replaced to______ in MTA powder to avoid grey color

• Tin oxide

• Magnesium oxide

• Bismuth dioxide

• Lead oxide

Immediate pH after mixing of MTA

• 12.5

• 11

• 10.2

• 7.5

What component is responsible for setting time in MTA?

• Aluminium phosphate

• calcium sulphate

• Tricalcium silicate

• Barium oxide

The component responsible for fast setting of Biodentine

• Alumunium chloride

• Aluminium phosphate

• Calcium chloride

• Magnesium chloride

In Bioaggregate bismuth oxide is replaced with

• Barium chloride

• Aluminium chloride

• Tantlum penta oxide

• Barium oxide

Another name of New endodontic cement is

• Calcium Phosphate

• Calcium Enriched Mixture

• Aluminium phosphate

• Bioaggregate