A patient of 40 years male got a blow on the angle region of mandible and he is asymptomatic. The x-rays of that region shows a radiopaque line with very sharp undercut in the lower border of mandible which may be due to:

Surgery

A patient of 40 years male got a blow on the angle region of mandible and he is asymptomatic. The x-rays of that region shows a radiopaque line with very sharp undercut in the lower border of mandible which may be due to:

A tender swelling in submandibular triangle is mostly likely diagnosed as

In transfacial proportions, the face Is divided into how many segments:

Specific for Ankylosing spondylitis is true?