Question 37 · LDEK · Developmental disorders of teeth
Indicate the true statements about so-called “Rushton teeth”:
1) most often they appear as supernumerary teeth;
2) shape and size of their crowns are abnormal;
3) it is congenital mesodermal tooth hypoplasia;
4) there is no enamel on their labial surface;
5) thickness of enamel is normal while the layer of dentine is thinner and the pulp chamber is huge;
6) the roots are underdeveloped.
The correct answer is:
2) shape and size of their crowns are abnormal;
3) it is congenital mesodermal tooth hypoplasia;
4) there is no enamel on their labial surface;
5) thickness of enamel is normal while the layer of dentine is thinner and the pulp chamber is huge;
6) the roots are underdeveloped.
The correct answer is:
- A. 1,2,4.
- B. 3,5,6.
- C. 2,5,6.
- D. 3,4,6.
- E. 1,3,4,5.
Hint
These are the so-called shell teeth: think which tissue is deficient and what that does to pulp size and roots.
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