Question 5 (part 2) · LDEK · Craniofacial and occlusal development
Processes determining correct development of occlusion during child’s growth include:
1) in primary dentition occlusal plane has straight course;
2) in primary dentition dental arches shape is of a half-elipsoid and every arch contains 10 teeth;
3) in a 3-year-old child, the line post molars is straight;
4) upper incisors cover half of the lower incisors’ height in a 1-year-old child;
5) first physiological mandible protrusion causes flattening of the overbite on incisors in the period immediately preceding dentition change.
Correct answer is:
2) in primary dentition dental arches shape is of a half-elipsoid and every arch contains 10 teeth;
3) in a 3-year-old child, the line post molars is straight;
4) upper incisors cover half of the lower incisors’ height in a 1-year-old child;
5) first physiological mandible protrusion causes flattening of the overbite on incisors in the period immediately preceding dentition change.
Correct answer is:
- A. 1,5.
- B. 1,3.
- C. 3,5.
- D. 4,5.
- E. 2,4.
Hint
Recall the shape of primary arches, the terminal plane at age 3, and which physiological mandibular advance comes just before the change of teeth.
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