<prompt> The dotted line has clinical significance in case ofMaxillary sinusitisMaxillary carcinomaMandibular fractureMaxillary fracture  <response>: The above line is OHNGRENS 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 Ohngrens 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 