463.The mucogingival line in the incisor and canine areas are located approximately

a.3mm apical to the crest of alveolar bone

b.10 mm apical to crest of alveolar bone

c.12 mm apical to crest of alveolar bone

d.12mm incisal to alveolar bone

Ans-3mm apical to the crest of alveolar bone

462.Advantages of Mcspaden technique are all except

a.economy of time

b.rapid filling of canals apically and laterally

c.ease of selection and treatment

d.can be used in narrow canals

Ans-d.can be used in narrow canals

461.Etiology of mongolism

a.trisomy 21
b.congenital syphillis
c.disomy 21
d.nutritional deficiency


Ans-a.trisomy 21