Question 21 (part 2) · LDEK · Tooth development and mineralization
Choose correct statements regarding dentin mineralization:
1) its course begins immediately after matrix development;
2) its course is the same as in case of enamel mineralization;
3) at the beginning, the matrix’ follicles are secreted by odontoblasts to the intercellular space;
4) the matrix’ follicles constitute the nucleation core of hydroxyapatites and give rise to many mineralization foci;
5) globular pattern of calcification takes place in mantle dentin.
Correct answer is:
2) its course is the same as in case of enamel mineralization;
3) at the beginning, the matrix’ follicles are secreted by odontoblasts to the intercellular space;
4) the matrix’ follicles constitute the nucleation core of hydroxyapatites and give rise to many mineralization foci;
5) globular pattern of calcification takes place in mantle dentin.
Correct answer is:
- A. 1,2,4.
- B. 1,2,5.
- C. 1,3,4,5.
- D. 1,4,5.
- E. 2,3,4.
Hint
Contrast dentin with enamel mineralisation, and consider where matrix vesicles bud off from odontoblasts and what they nucleate.
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