Exam I 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 & palatine 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 & arachnoid mater:

Answer 4

Meningocele

Question 5

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 is true, second statement false

Question 6

Thyroglossal duct cyst & lateral cervical cyst result from ducts & 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, second statement is true

Question 8

Cervical loops form between OEE & stratum intermedium. They form CEJ in adults:

Answer 8

First statement false, second statement true

Question 9

Epithelial diaphragm determines:

Answer 9

Number of roots

Question 9

Epithelial diaphragm determines:

Answer 9

Number of roots

Question 10

Odontoma defects occur in the initiation stage. They result in small fragments of dentin, enamel & cementum:

Answer 10

Both statements true

Question 11

Most common neoplastic lesion arising from odontogenic epithelium:

Answer 11

Ameloblastoma

Question 12

Most common neoplastic lesson in jaw arising from odontogenic epithelium:

Answer 12

Ameloblastoma

Question 13

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

Answer 13

Both statements are true

Question 14

What do neural crest cells not make:

Answer 14

Enamel

Question 15

Case study: Missing six teeth:

Answer 15

Oligodontia

Question 16

Twinning tooth with tooth count missing one:

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 statements are true

Question 19

Appostitional growth can be found in tooth tooth growth. It is best see when enamel & dentin grow away from each other:

Answer 19

Both statements true

Question 20

Primary cuticle/Nasmyth’s membrane is comprised of what four layers?

Answer 20

OEE
Reduced ameloblasts (IEE)
Stellate reticulum
Stratum intermedium

Question 21

Dilaceration is caused by:

Answer 21

Hertwig’s tooth sheath

Question 22

Optical phenomenon from changed is 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

Enameling & Tuftelin

Question 26

Dental follicle develops into all except:

Answer 26

Pulp

Question 27

The dental follicle develops into:

Answer 27

PDL Cementum Alveolar bone proper

Question 28

What does the dental papilla become:

Answer 28

Pulp

Question 29

Stratum intermedium produces:

Answer 29

Alkaline phosphatase

Question 30

Bud/cap stage consists of proliferation, differentiation & morphogenesis. Maturation stage consists of induction & 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 abrasion 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 true

Question 34

Enamelin is the biggest protein. Based on its position it helps crystals grown & nucleate:

Answer 34

Both statements are true

Question 35

Enamel typically does not have tensile strength & has elastic properties...flexible

Answer 35

True

Question 36

Radiograph pic of cyst attached to CEJ

Answer 36

Dentigerous cyst

Question 37

Defect of spinal cord not fusing all the way:

Answer 37

Spina bifida

Question 38

Conscience question: occurs during what stage

Answer 38

Apposition/maturation First statement true, second statement false

Question 39

T/F: Primitive stream invaginates to form mesoderm

Answer 39

True

Question 40

T/F: Tuftelin links enamel & cementum:

Answer 40

False Tuftelin links enamel & dentin

Question 41

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

Answer 41

1st- lateral lingual swellings

Question 42

Patient presents with a large swelling on neck. Upon examination you notice the swelling is aligned with the sternocleidomastoid 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 CEP's?

Answer 44

1. Periodontal issues 2. Present in mandibular molars 3. Ameloblasts that have migrated to the root 4. one more (all true)

Question 45

Something about the sequence of reciprocal induction with odontoblasts secreting mantle dentin & ameloblasts secrete enamel matrix:

Answer 45

True