Try it
Dentistry · Oral medicine and oral cancer: acromegaly
Sample itemA 38-year-old has enlarging hands, coarse features and a prominent jaw so that the lower teeth bite in front of the upper. New gaps have appeared between his teeth. What explains the gaps?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
B. Overgrowth of the jaws and tongue from excess growth hormone
Excess growth hormone enlarges the mandible, alveolar arches and tongue, so teeth spread apart and an underbite develops. Dentists often notice these changes first.
Option by option
A. Periodontal bone loss from collagen breakdown
Periodontal loss would cause mobility and recession, not this global overgrowth.
B. Overgrowth of the jaws and tongue from excess growth hormone (correct)
Correct. Enlargement of the jaws and tongue opens interdental spaces.
C. Gingival fibromatosis displacing the teeth
Gingival fibromatosis is a hereditary overgrowth and does not fit the endocrine picture.
D. Hypercementosis pushing teeth apart
Hypercementosis thickens roots and is not the cause of spacing.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
More Dentistry questions
- Tooth development: Hertwig's root sheathDuring tooth development, which structure induces odontoblast differentiation in the roo…
- Tooth eruption: first permanent toothA 6-year-old child has a new tooth behind the last deciduous molar, with no deciduous to…
- Tooth development: neonatal lineGround sections of deciduous teeth show an accentuated incremental line in enamel and de…
- Tooth development: cell rests of MalassezEpithelial cell rests of Malassez persist in the periodontal ligament. Which cyst most o…