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Question 104 · LDEK · Craniofacial and occlusal development

Indicate the true statements concerning the delayed eruption of permanent teeth:

1) is described by the latin term dentitio praecox;
2) can be caused by general factors such as: heredity; hypofunction of the thyroid or the hypophysis, rickets;
3) can be caused by local factors such as: trauma and jaw cysts, dental disturbances regarding the tooth topography, supernumerary teeth and gingival fibromatosis;
4) it is diagnosed when permanent teeth erupt in the oral cavity within 3 months after the supposed time of their eruption;
5) it is diagnosed when permanent teeth erupt in the oral cavity within a year or longer after the supposed time of their eruption.
The correct answer is:
  1. A. 1,2,3,4.
  2. B. 1,2,3,5.
  3. C. 2,3.
  4. D. 2,3,4.
  5. E. 2,3,5.
Hint

Check the Latin term (praecox means early) and how long a delay must last before permanent tooth eruption is considered abnormal.

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