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Oral Pathology - 3 Questions
Lession of facial nerve at level of stylomastoid foramen leads to 1. Loss of taste sensation from anterior 2/3 of tongue2. Paralysis of orbicularis oculi muscle3. Losss of innervation to stapedius4. Loss of lacrimal secretion
Lesion of the facial nerve at the stylomastoid foramen leads to paralysis of the orbicularis oculi muscle.
Pagets disease shows a characteristic mosaic pattern of bone on radiographs due to irregular bone remodeling with alternating areas of bone resorption and formation. This creates a "jigsaw puzzle" or mosaic appearance with cement lines separating areas of old and new bone. Fibrous dysplasia shows ground-glass appearance, osteopetrosis shows marble bone appearance, and osteogenesis imperfecta shows thin cortices.
Letterer-Siwe disease is a disturbance of lipid metabolism.