Dental Development

Question 1

When does the initiation stage begin?

Answer 1

6 WIUL

Question 2

What is dental lamina?

Answer 2

Epithelial basal cell layer multiply downwards causing thickening of the epi

Question 3

What dental problems will happen is there is a disturbance at the initiation stage?

Answer 3

Missing teeth or supernumerary

Question 4

What is tooth germ?

Answer 4

Dental organ + dental papilla + dental sac

Question 5

What is the histodifferentiation stage?

Answer 5

Bell stage– Cap grows to bell like, dental lamina shrinks to just a cord

Question 6

What is the succedaneous tooth dental lamina?

Answer 6

Develops to the lingual side as an extension of the dental lamina of the primary tooth

Question 7

Ameloblasts are from the

Answer 7

inner enamel epithelium

Question 8

Odontoblasts are from the

Answer 8

dental papilla

Question 9

Organic matrix forms in layers (tip of crown–> cervicall) at the

Answer 9

dentinoenamel junction

Question 10

What happens at the late bell stage?

Answer 10

Mineralization and maturation

Question 11

When does the late bell stage begin?

Answer 11

4 months IUL

Question 12

Where does the late bell stage begin?

Answer 12

At cusp tips and incisal edges

Question 13

What is eruption?

Answer 13

Time from when root begins to form until tooth meets its antagonist

Question 14

What is gingival emergence?

Answer 14

When tooth first breaks into oral cavity

Question 15

What is the length of time of root completion for primary teeth?

Answer 15

1.5 years

Question 16

What is the length of time of root completion for permanent teeth?

Answer 16

3 years