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Mask-like appearance of face with narrowing of aperture and rigidity of the mucosa is characteristic of______________?

/ Diseases of Nerves & Muscles, Medical Mcqs, Oral Pathology and Medicine / By
Mask-like appearance of face with narrowing of aperture and rigidity of the mucosa is characteristic of______________?

A. Progressive systemic sclerosis
B. Tetanus
C. Multiple sclerosis
D. Osteomalacia