Tooth Development

Question 1

متي يبدأ تكوين ال Root ?

Answer 1

When enamel and dentin rach future CEJ.

Question 2

In root formation cervical loop proliferate into …….

Answer 2

Epithelial root sheath of hertwig.

Question 3

كيف يتكون ال epihelial diaphragm,

Answer 3

Hersh bend at future CEJ into horizontal plane

Question 4

ما هي وظيفه ال epithelial diaphram,

Answer 4

1-narrowing to the cervical opening
2-remain fixed during development and growth.
3- its proliferation accompanied to proliferation of cells of pulp

Question 5

What IS thé fonction of Hersh ?

Answer 5

1-epithelial diaphragme.
2-proliferate coronary to diaphragme in a vertical dimension.
3- mold the shape of root
4- intiate dentin formation

Question 6

Hersh can be seen as a continous layer ?( true or false)

Answer 6

False ,
Rapid prolifération,rapid dentine formation,rapid destruction

Question 7

Factors réducteur wide apical foramen

Answer 7

1-epithelial diaphram
2-deposition of dentin and cementum

Question 8

Hersh distengerate into …..1….,that may distengerate into…..2….

Answer 8

Epithelial strands,epithelial rest’s of malassez

Question 9

خطوره ال epithelial rest of malassez

Answer 9

Linnig of dental cyst or dentigerous cyst that may cause inflammation to PDL

Question 10

Effect of epithelial reste of seer,s

Answer 10

Eruption of cyst or odontoma ,supernumerary tooth