Question 270 · LDEK · Developmental disorders of teeth
Which of the following are characteristic of amelogenesis imperfecta associated with enamel hypomineralization:
1) changed crown shape;
2) correct crown shape just after eruption;
3) rough enamel with numerous wells, grooves;
4) milky white or light brown, matt, soft enamel of 'cheese' or chalk consistency;
5) irregular outline of enamel, the tooth cavity widened on X-ray image;
6) enamel layer of normal thickness, normal tooth cavity on X-ray image.
The correct answer is:
2) correct crown shape just after eruption;
3) rough enamel with numerous wells, grooves;
4) milky white or light brown, matt, soft enamel of 'cheese' or chalk consistency;
5) irregular outline of enamel, the tooth cavity widened on X-ray image;
6) enamel layer of normal thickness, normal tooth cavity on X-ray image.
The correct answer is:
- A. 1,3,5.
- B. 1,4,5.
- C. 1,4,6.
- D. 2,3,5.
- E. 2,4,6.
Hint
In the hypomineralized (hypocalcified) type enamel forms in normal amount but is poorly mineralized: soft, though initially normal in shape.
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