Board Review Embryology And Histology

Front 1

What is Histodifferentiation

Back 1

Formation of Ameloblast from cells of the inner enamel epithelium ersion

Front 2

What is Morphodifferentiation:

Back 2

Hertwigs sheath taking form into the root ·

Front 3

Odontogenisis: Formation of teeth ·

Back 3

Formation of teeth

Front 4

Dentinogeneisis

Back 4

Formation of dentin

Front 5

What forms the Midface structures

Back 5

Frontal processes and 1st branchial arch:

Front 6

What forms the posterior portion of the tongue

Back 6

2nd, 3rd, and 4th Branchial arch:

Front 7

What forms the anterior portion of the tongue

Back 7

Tuberculum impar

Front 8

What forms the Primitive mouth

Back 8

Stomodeum and Buccopharyngeal arch:

Front 9

What forms the DEJ ·

Back 9

Basement membrane

Front 10

What forms the CELL LAYERS OF THE ENAMEL ORGAN

Back 10

Outer enamel epithelium/ Stellate reticulum

Front 11

What forms the PULP

Back 11

Dental papillae

Front 12

What of the following devleops the posterior one third of the tongue

Back 12

Copula

Front 13

Tuberculum Impar/ Lingual Swellings forms the

Back 13

Anterior two third of the tongue

Front 14

Meckel's Cartrilage is important in the formation of what

Back 14

Alveolar Bone

Front 15

What forms the middle portion of the face, Maxilla, and mandible

Back 15

1st branchial arch

Front 16

Tooth Development begins when a localized growth of cells on the jaw ridge produces a strand of epithlium. what is the strand called

Back 16

Dental lamina

Front 17

What does the tooth germ/tooth bud do

Back 17

Involved in later stages of tooth development

Front 18

Dental lamina/Dental papillae do what

Back 18

Are TISSUES associated with development

Front 19

What are Remnants of the Hertwigs sheath and are trapped intissue of the periodontal ligament

Back 19

: Rests of Malassez r

Front 20

Enamel contains which perctange of inorganic material

Back 20

96%

Front 21

Dentin contains what percentage of inorganic material

Back 21

70%

Front 22

Cementum contains what percentage of inorganic material

Back 22

65%

Front 23

Which is the following is created with the changes in direction of developing enamel rods

Back 23

Hunter-Shreger bands

Front 24

Of what are perikymata an external manifestation

Back 24

Lines of retzius

Front 25

What are Perikymata

Back 25

Fine horizontal lines that can be seen on the enamel surface

Front 26

An enamel pearl is what

Back 26

confused with calculus because of its location

Front 27

Where are odontoblast nucli of a tooth located

Back 27

Pulp Tissue

Front 28

Where is cellular cementum most likely found

Back 28

Apical portion of the tooth

Front 29

A chronic inflammation of a tooth that causes a localized thickening of cementum is referred to as

Back 29

Hypercementosis

Front 30

Rank the tissues from Most to Least resistant to abrasion

Back 30

Enamel

Dentin

Cementum

Front 31

Where does cementum have the greatest thickness

Back 31

at the apex or furcation areas

Front 32

What cells are most active on the msial side of a tooth being translated mesially during orthodontic treatment

Back 32

Osteoclast

Front 33

What cells are most active on the distal side of the tooth being translated mesially during orthodontic treatment

Back 33

Osteoblast

Front 34

What is the most common type of epithium found in the oral cavity

Back 34

Stratfied Squamous

Front 35

Which lingual papillae is not considered a primary location for taste buds

Back 35

Filiform

Front 36

Epithelial rests of malassez are associated with what

Back 36

Enamel Organ

Front 37

What lingual papillae is the most keratinized

Back 37

Filiform

Front 38

What type of bone tissue increases in amount because of an increase in occlusal activity

Back 38

Trabecular

Front 39

the histological pocket depth is what

Back 39

less than the clinical probing depth

Front 40

Corkscrew shaped structures that lie among dentin are called

Back 40

Korff's Fibers

Front 41

What is a commissural lip pit

Back 41

Dimple like invaginations of the corner of the lips

Front 42

What is a bifid uvula

Back 42

Minor cleft of the soft posterior soft palate

Front 43

Cleft lip with or without cleft palate occus in

Back 43

1 in 1,000 live births

Front 44

Cleft palate with or without cleft lip occurs in about

Back 44

1 in 2500 live births

Front 45

The branchial arhces are six pairs of stacked bilateral swellings of tissue that appear inferior to the stomodeum. The branchial arches include the maxillary arch

Back 45

First statement TRUE

Second statement False it includes the mandibular not maxillary

Front 46

The tongue develops during the second and third weeks of prenatal development. The tongue develops from indepent swellings locatd internally on the floor of the primitive pharynx

Back 46

First statment FALSE (Fourth to eigth weeks)

Second Statement is TRUE

Front 47

The bell stage occurs between the eleventh and twelfth weeks of prenatal development. There is differentiation of the enamel organ into four layers during the bell stage.

Back 47

BOTH ARE TRUE

Front 48

Lines of Retizius appears as incremental lines in dentin that stain brown. In transverse sections the lines of Retizius appear as concentric rings

Back 48

First statement is FALSE (Incremental lines in Enamel)

Second statement is TRUE

Front 49

What are incremental lines or bands that stain darkly in dentin

Back 49

Imbrication lines of von Ebner

Front 50

The hard tissues of the tooth consist mainly of what

Back 50

Calcium hydroxyapatite

Front 51

Pulp horns are most prominent where

Back 51

Under MB cusp of molar teeth

Front 52

The alveolar crest is the most apical rim of the alveolar bone proper. The alveolar crest is apical to the cementoenamel Junction by approx 1-2mm

Back 52

First statement is FALSE (most Cervical)

Second Statement is TRUE

Front 53

Oral epithilium is classified as

Back 53

Stratified Squamous epithilium

Front 54

sulcular and Crevicular epithium is keratinized or non keratinized

Back 54

NON keratinized

Front 55

Masticatory mucosa such as the hard palate and attached gingiva is keratinized or non keratinized

Back 55

KERATINIZED

Front 56

Attached gingiva is found between

Back 56

Mucogingival junction and the free gingival groove

Front 57

The connective tissue of the gingival tissue is called the

Back 57

Lamina Propria

Front 58

The supporting alveolar bone is made of

Back 58

Cancellous and spongy bone