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Mobility of teeth in carcinoma of maxillary sinus is due to involvement of

 # Mobility of teeth in carcinoma of maxillary sinus is due to involvement of ___________ by tumor.
A. Anterior wall of the sinus
B. Posterior wall of the sinus
C. Roof of the sinus
D. Floor of the sinus


The correct answer is D. Floor of the sinus.

The clinical features of the neoplasm depend on the direction of spread of the neoplasm or the involvement of the surrounding structures. The floor of the sinus is associated with oral structures like mobility of teeth. Medial wall involvement causes nasal obstruction. Superior wall involvement produces displacement of the eyes. Lateral wall involvement produces bulging of the cheek. 

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