A 2 phases.

B 3 phases.

C 4 phases.

D None.

A 0.25 mm

B 0.75 mm

C 0.5 mm

D 1 mm

A Intestine

B Lungs

C Oral cavity

D Gingiva

A Harden in mouth

B Are expensive

C Are difficult to fabricate

D Cause ridge resorption

A Plain retraction cord

B Retraction cord with 2% racemic epinephrine

C Retraction cord with 8% aluminium chloride

D None of the above

A Superior

B Inferior

C Antero-posterior

D Transverse

A Trauma to Marginalized gingiva

B Reversible

C Reduction in height of alveolar crest

D No pocket

A Superior.

B Average.

C Low average.

D Borderline.

A Guiding cusps

B Supporting cusps

C Both of the above.

D None.

A Silicon carbide

B Alumina

C Arkansas

D Diamond