Odontogenesis

Question 1

In which stage does the basement membrane form to separate the oral epithelium and ectomesenchyme?

Answer 1

The Bud Stage

Question 2

In the bud stage what grows into a bud shape that penetrates growing ectomesenchyme?

Answer 2

Dental Lamina

Question 3

In the Bell Stage, the Inner Enamel Epithelium, Stellate Reticulum, and the Stratum Intermediate form?

Answer 3

Enamel

Question 4

Outer Enamel Epithelium

Answer 4

Unstratified Cuboidal

Question 5

Inner Enamel Epithelium

Answer 5

Unstratified Columnar

Question 6

IEE cells become what to make enamel?

Answer 6

Ameloblast

Question 7

The Stellate Reticulum are star shaped cells between what?

Answer 7

IEE & OEE

Question 8

The Stratum Intermediate is a compressed layer between the____?

Answer 8

IEE& OEE

Question 9

What attracts water in the area, in the bell stage?

Answer 9

Glycosamino (GAG’s)

Question 10

In the bell stage, differentiation of the enamel organ into the bell shape has 4 cell types. Name them

Answer 10

1) Outer enamel epithelium
2) Inner enamel epithelium
3) Stellate reticulum
4) Stratum Intermediate

Question 11

In the bell stage, differentiation of the dental papilla has 2 cell types. Name them and what the develop into.

Answer 11

1) Outer Cells-dentin

2) Inner Cells-pulp

Question 12

The Initiation Stage is in what weeks?

Answer 12

6th & 7th week

Question 13

The Bud Stage occurs in what week?

Answer 13

Week 8

Question 14

The Cap Stage occurs in what weeks?

Answer 14

9th and 10th week

Question 15

The Bell Stage occurs in what weeks?

Answer 15

11th & 12th weeks

Question 16

During root formation, what is formed by the IEE and OEE?

Answer 16

Cervical Loop

Question 17

When there is no SR or SI in the cervical loop what does it make?

Answer 17

Dentin

Question 18

During root formation, the cervical loop stimulate cells to be come what?

Answer 18

Odontoblasts

Question 19

What part of the cervical loop functions to shape the root and induce root dentin formation?

Answer 19

Hertwig’s Epithelium Root Sheath

Question 20

During Crown Formation, the IEE elongates and becomes_____?

Answer 20

Pre-ameloblasts

Question 21

What age is a child if they are missing their mandibular central incisors, O& P?

Answer 21

6 years old

Question 22

A 7 year old is missing what teeth?

Answer 22

Maxillary central incisors E & F

Mandibular lateral incisors Q & N

Question 23

What teeth does a 7 year old have coming in?

Answer 23

1st molars-3,14,19,30

Mandibular central incisors 24 & 25

Question 24

If a child is missing their maxillary lateral incisors, how old are they?

Answer 24

8 years old

Question 25

An 8 year old has what teeth erupting?

Answer 25

Maxillary central incisors 8 & 9 | Mandibular lateral incisors 23 & 26

Question 26

If a child is missing their mandibular canines and has their maxillary lateral incisors erupting, how old are they?

Answer 26

9 years old

Question 27

A 10 year old is missing what teeth?

Answer 27

Maxillary pre molars A,B,I,J

Question 28

If a child has their mandibular 1st premolars and mandibular canines erupting, they are how old?

Answer 28

10 years old

Question 29

If a child is missing their maxillary 2nd premolars, maxillary canines, mandibular 1st premolar, and mandibular 2nd premolars, how old are they?

Answer 29

11 years old

Question 30

An 11 year old has what teeth erupting?

Answer 30

Maxillary 1st premolar 5&12 | Mandibular 2nd molars begin to form 18 & 31

Question 31

If a child has their maxillary canines, and premolars and mandibular premolars and 2nd molars erupting, how old are they?

Answer 31

12 years old

Question 32

At what age do teeth #1, #16, #17, #32 start erupting?

Answer 32

Around 18 years old

Question 33

In Primary Dentition, the central incisors erupt ____?

Answer 33

Maxillary-7 to 8 months | Mandibular-6 months

Question 34

In Primary Dentition, the lateral incisors erupt ____?

Answer 34

Maxillary- 9 months | Mandibular 7 months

Question 35

In Primary Dentition, the canines erupt ____?

Answer 35

Maxillary and mandibular erupt at 16-18 months

Question 36

In Primary Dentition, the first molars erupt ____?

Answer 36

Maxillary and Mandibular erupt at 12 to 14 months

Question 37

In Primary Dentition, the 2nd molars erupt ____?

Answer 37

Maxillary-24 months | Mandibular-20 months

Question 38

In Permanent Dentition, the central incisors erupt ____?

Answer 38

Maxillary - 7 to 8 years | Mandibular- 6 to 7 years

Question 39

In Permanent Dentition, the lateral incisors erupt ____?

Answer 39

Maxillary-8 to 9 years | Mandibular-7 to 8 years

Question 40

In Permanent Dentition, the canines erupt ____?

Answer 40

Maxillary- 11 to 12 years | Mandibular-9 to 10 years

Question 41

In Permanent Dentition, the first premolars erupt ____?

Answer 41

Maxillary- 10 to 11 years | Mandibular- 10 to 12 years

Question 42

In Permanent Dentition, the second premolars erupt ____?

Answer 42

10 to 12 years

Question 43

In Permanent Dentition, the first molar erupts_____?

Answer 43

6 to 7 years

Question 44

In Permanent Dentition, the 2nd molar erupts____?

Answer 44

Maxillary -12 to 13 years | Mandibular-11 to 13 years

Question 45

In Permanent Dentition, the 3rd molars erupt ____?

Answer 45

17- 21 years

Question 46

On the maxillary what teeth have 4 lobes (3 being Facial, 1 lingual)?

Answer 46

Premolar to Premolar 4-13

Question 47

On the mandibular, what teeth have 4 lobes (3 facial,1 lingual)?

Answer 47

22-27 canine to canine

Question 48

On the maxillary what teeth has 5 lobes (2 buccal, 3 lingual)?

Answer 48

1st molar. 3&14

Question 49

On the mandibular, what teeth has 5 lobes (2 lingual,3 buccal)?

Answer 49

1st molar 19&30

Question 50

On the maxillary and mandibular, what teeth have 4 lobes ( 2 buccal, 2 lingual)?

Answer 50

2nd and 3rd molars 1,2 15,16 17,18 31,32

Question 51

In week 1, preimplantation takes place within ____?

Answer 51

4 to 7 days

Question 52

Blastocysts are_____?

Answer 52

Fluid filled collection of cells

Question 53

Fertilization is the Union of ____?

Answer 53

Sperm and ovum

Question 54

In which stage to the ectomesenchyme and the oral epithelium interact to create the dental lamina?

Answer 54

Initiation stage