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Oral Medicine

Osteoporosis, Hyperparathyroidism & Paget’s Disease: Jaw Findings

NEET MDSINI-CET MDSINBDE

This high-yield revision note on Osteoporosis, Hyperparathyroidism & Paget’s Disease: Jaw Findings covers everything examiners typically test under Oral Medicine — structured as quick-reference tables, clinical correlations, mnemonics and previous-year-style high-yield points. It's built for last-mile revision before NEET MDS, INI-CET MDS and INBDE, so you can scan it in minutes instead of re-reading a whole textbook chapter.

DiseaseJaw/Radiographic FindingKey Lab Values
OsteoporosisReduced trabeculation, thin mandibular cortex on OPG (used as opportunistic screening tool)Normal Ca/P, low bone mineral density (DEXA)
Primary hyperparathyroidism"Ground glass" bone appearance, LOSS OF LAMINA DURA (classic), brown tumor (giant cell lesion of hyperparathyroidism)↑ Calcium, ↓ Phosphate, ↑ PTH, ↑ ALP
Paget's disease of bone"Cotton wool" appearance, loss of lamina dura, hypercementosis, progressive maxillary enlargement (leontiasis ossea), spacing/migration of teethNORMAL Ca/P, markedly elevated ALP (very high)
Osteopetrosis"Bone within bone" appearance, dense radiopaque jaws, high risk of osteomyelitis after extraction (poor vascularity)Normal Ca/P/PTH
Mnemonic: "Ground glass + high Calcium = Hyperparathyroidism; Cotton wool + high ALP but normal Calcium = Paget's" - both share loss of lamina dura but differ sharply on labs.
HY: Loss of lamina dura is a shared classic radiographic sign in BOTH hyperparathyroidism and Paget's disease - the differentiator tested repeatedly is serum calcium (elevated in HPT, normal in Paget's) alongside markedly elevated ALP being the hallmark lab finding unique to Paget's.
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