pls care to answer

[jcv]

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i am taking opart 2 in 3 days & confused with some questions....pls reply if possible

i cqme across these questions

1.acc to ada ,a dentist can announce speciasllization in
a.esthetic dentistry
b.implantology
c.geriatric dentistry
d.dental public health
e.hospital dentistry


2. younger appearance to max incisor can be given by selective grinding of enamel
a.flattening the incisal edges
b.shortening the inc edges
c rounding the incisal point angles
d. moving the facial line angles proximally
e.moving the facial height of contour gingivally


3.inflamm from pdl can extend to bone marrow
a. trauma from occ
b.nutrient canal
c pdl
d course of vascular channels