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What is The dotted line has clinical significance in case of and explain in detail?
The above line is OHNGREN'S line - extending from medial canthus of the eye to the angle of mandible Maxillary carcinoma arising anteroinferior to this line has a better prognosis than posterosuperior carcinoma Ohngren's classification. An imaginary plane is drawn, extending between medial canthus of eye and the angle of mandible . Growths situated above this plane (suprastructural) have a poorer prognosis than those below it (intrastructural). Ref : Diseases of ENT by Dhingra 6th edition Pgno : 207