Question 244 · LDEK · Craniofacial and occlusal development
Indicate true statement:
- A. the facial part of the head reaches 1/3 of its final size at the age of 2 years.
- B. ossification of the suture between incisive bone and maxilla occurs between 2 and 3 years of age.
- C. bone apposition occurs on the upper part of anterior surface of the incisive bone, while bone resorption occurs on its lower part.
- D. primary displacement of the maxilla involves its displacement simultaneous with the displacement of base of the anterior cranial fossa.
- E. the size ratio of the cranium to facial part of the head is established at the growth cessation and eventually amounts to 1.5:1.
Hint
Think about the surface growth fields of the premaxillary region and the difference between primary and secondary displacement.
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