Exam 1 practice questions

Question 1

Cleft lip is from a defective fusion of:

Answer 1

medial nasal process & maxillary process

Question 2

Type of cyst that presents in the maxilla between the palatine shelves and primary plate

Answer 2

nasopalatine

Question 3

What derivative of mesoderm makes skeleton?

Answer 3

somites from paraxial mesoderm

Question 4

case study: extrusion of dura and arachnoid mater

Answer 4

meningocele

Question 5

The facial nerve does special sensory to the anterior 2/3 of the tongue. Hypoglossal does sensory to anterior 2/3 of tongue

Answer 5

First statement true, second statement false

Question 6

Thyroglossal duct cyst and lateral cervical cyst result from ducts and not from invaginating foramen cecum

Answer 6

True

Question 7

Median rhomboid glossitis is typically found on the lateral tongue. It is typically associated with candida.

Answer 7

First statement is false (should be posterior). Second statement is true

Question 8

Cervical loops form between OEE and stratum intermedium. They form the CEJ in adults

Answer 8

First statement false. Second statement true

Question 9

Epithelial diaphragm determines:

Answer 9

number of roots

Question 10

Odontoma defects occur in the initiation stage. they result in small fragment of dentin, enamel, and cementum.

Answer 10

both statement true

Question 11

Most common neoplastic lesion in jaw arising from odontogenic epithelium

Answer 11

ameloblastoma

Question 12

Most common neoplastic lesion arising form odontogenic epithelium

Answer 12

amelobastoma

Question 13

Case study: tubercle formation is a defect during cap stage. It is common on central incisors.

Answer 13

Both statement are true

Question 14

What do neural crest cells not make:

Answer 14

enamel

Question 15

Case study: missing 6 teeth

Answer 15

oligodontia

Question 16

Twinning tooth with tooth count missing 1

Answer 16

fusion

Question 17

dentigerous cyst:

Answer 17

attached to CEJ, comprises 20% of all jaw cysts

Question 18

OKC presents as multilocular lesions. 65% located in mandible.

Answer 18

Both are true

Question 19

Appositional growth can be found in tooth growth. It is best seen when enamel and dentin grow away from eachother.

Answer 19

both statement true

Question 20

Primary cuticle nasmyth’s membrane is comprised of what 4 layers?

Answer 20

OEE, Reduced ameloblasts (IEE), Stellate reticulum, and stratum intermedium

Question 21

Dilaceration is caused by:

Answer 21

Hertwig’s root sheath

Question 22

Optical phenomenon from changes in enamel rod direction

Answer 22

Hunter-shreger bands

Question 23

What is false about enamel spindles?

Answer 23

They are hypermineralized

Question 24

Patient with excess fluoride would show:

Answer 24

brown mottled spots

Question 25

What are enamel tufts made of?

Answer 25

Enamelin and tuftelin

Question 26

Dental follicle develops into all except what?

Answer 26

Pulp,

Question 27

What does the dental follicle develop into

Answer 27

PDL, cementum, and alveolar bone proper

Question 28

What does the dental papilla become?

Answer 28

pulp

Question 29

The stratum intermedium produces:

Answer 29

alkaline phosphatase

Question 30

Bud/cap stage consists of proliferation, differentiation, and morphogenesis. Maturation stage consists of induction and proliferation.

Answer 30

First statement true, second statement false

Question 31

Where is apoptosis INITIALLY seen?

Answer 31

Bud stage

Question 32

Gnarled enamel is abrasian resistant. It is seen in the CEJ

Answer 32

first statement true, second statement false

Question 33

Amelogenin moves towards ameloblasts where it is degraded. As this happens the enamel crystals grow.

Answer 33

both statements ture

Question 34

Enamelin is the biggest protein. Based on its position it helps crystals grow and nucleate.

Answer 34

both statements are true

Question 35

Eneamel typically does not have tensile strength and has elastic properties...flexible...

Answer 35

true

Question 36

Radiograph pic of cyst attached to CEJ

Answer 36

Dentingerous cyst

Question 37

Defect of spinal cord not fusing all the way

Answer 37

spina bifida

Question 38

Conscrence question: occurs during what stage?

Answer 38

Apposition/maturation

Question 39

True or false: the primitive streak invaginates to form mesoderm

Answer 39

true

Question 40

Something about tuftelin and it linking enamel and cementum

Answer 40

false- tuftelin link enamel and dentin

Question 41

What arch/structre does the anterior 2/3 tongue come from:

Answer 41

1st- lateral lingual swellings

Question 42

Patient presents with a large swelling on the neck. Upon exam you notice the swelling is aligned with the sternocledomastoid muscle. What is the possible diagnosis.

Answer 42

lateral cervical cyst from cervical sinus

Question 43

Case study: a patient has an okc cyst, upon biopsy what would be found in the lumen?

Answer 43

keratin

Question 44

What is true about CEPs?

Answer 44

1. periodontal issues 2. present in mandibular molars 3. ameloblasts that have migrated to the root 4. one more but they were all true

Question 45

Something about the sequence of reciprocal induction with odontoblasts secreting mantle dentin and ameloblasts secreting enamel matrix..

Answer 45

true