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PGCEE MDS 2022: In winter's WAR line, Amber line represents the:

 # In winter's WAR line, Amber line represents the:
a) Relative depth of the III molar
b) Point of application of the elevator
c) Bone level covering the impacted tooth
d) Axial inclination of the impacted tooth relative to Second molar


The correct answer is C. Bone level covering the impacted tooth.

Winter's lines include 3 imaginary lines that are drawn on the radiographs.
• White line
• Amber line
• Red line

White Line: It is drawn touching the occlusal surfaces of 1st and 2nd molars and is extended posteriorly over the 3rd molar region. It indicates the difference in occlusal level of 2nd and 3rd molars.

Amber Line: It is drawn from the crest of interdental bone between 1st and 2nd molars and extends posteriorly distal to 3rd molar or to the ascending ramus. It indicates the amount of alveolar bone covering the impacted tooth and the portion of tooth that is not covered by the bone.

Red line: It is drawn perpendicular from the amber line to an imaginary point of application of elevator.
It indicates the depth of the tooth in the bone and the difficulty encountered in removing of the tooth.

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