Developmental Anomalies

Question 1

Cleft lip is the result of

Answer 1

Lack of fusion between the medial nasal process with lateral portions of the maxillary process

Question 2

When does cleft lip happens in intrauterine life

Answer 2

6th and 7th week

Question 3

Cleft palate is characterized by

Answer 3

Fissure in the midline of the palate due to failure of fusion if palatal shelves of the max process

Question 4

Most common form of craniofacial malformation of the head and neck

Answer 4

Cleft lip
Cleft palate

Question 5

Dental problems in cleft lip and palate patients

Answer 5

Malocclusion
Crown defects
Missing teeth -lateral incisors
Supernumerary teeth

Question 6

Paramedian lip pits

Answer 6

Congenital invaginations of the lower lip
Bilateral symmetric

Question 7

Vander woude syndrome

Answer 7

Autosomal dominant
Presence of lower lip pit
Cleft lip/and palate

Question 8

Inherited disease characterized by aplasia or hypoplasia of ectodermal structures

Answer 8

Ectodermal dysplasia

Question 9

Most common type of ectodermal dysplasia

Answer 9

Hypohidrotic form
X linked recessive inheriitence
Females are carriers
Males are affected

Question 10

Clinical findings of ectodermal dysplasia

Answer 10

Smooth dry skin
Hypotrichosis - blonde hair eyebrows
Anhidrosis - no sweat glands, heat intolerance
Midface hypoplasia
Dystrophic and brittle nails
Xerostomia
Depressed bridge of the nose

Question 11

Dental findings in ectodermal dysplasia

Answer 11

Anodontia
Oligodontia
Conjcal crowns tapered and pointed

Question 12

Autosomal dominant disorder affects face skull and clavicles

Answer 12

Cleidocranial dysplasia - dystotosis

Question 13

Mutation in which gene results in cleidocranial dysplasia

Answer 13

RUNX2

Question 14

Hypoplasia or aplasia of clavicles
Hyper mobility of shoulders
Defective ossification of skull

Large prominent frontal eminence
Ocular hypertelorism
Broad base nose shortened skull

Answer 14

Cleidocranial dysplasia

Question 15

Oral findings in cleidocranial dysplasia

Answer 15

Over retention of deciduous teeth
Failure of eruption of permanent teeth
Numerous supernumerary teeth
Dentigerous cysts

Question 16

Most common syndrome to have supernumerary teeth

Answer 16

Cleidocranial dysplasia

Question 17

Inherited developmental disorder in neonates characterized by cleft palate
Micrognathia
Hypoplasia and retognathia of mandible
Glossoptosis

Answer 17

Pierre robin syndrome

Question 18

Autosomal dominant condition characterized by malformations of the skull- craniosystosis(premature fusion of sutures) acrobrachycephaly (tower skull), mid third retrusion and hypoplasia, mandible prognathism

Answer 18

Apert syndrome
Acrocephalosundactyly

Question 19

Intraoral findings of apert sydrome

Answer 19

Bifid uvula
Class 3 malocclusion
Crowding
Cleft palate
Ant open bite
Ant and post crossbite
Shovel shaped incisors
Delayed eruption and missing teeth

Question 20

Autosomal dominant craniofacial disorder characterized by craniosynostosis, orbital cavity deformities, bracycephaly (short head) , shallow orbits, ocular proptosis, hypertelorism and increased intracranial pressure

Answer 20

Crouzon syndrome

Question 21

Intraoral manifestations of crouzon syndrome

Answer 21

Midface hypoplasia
Mand prognathism
Crowding in max
Bilateral post crossbites

Question 22

Beaten metal app on skull xray due to increased intracranial pressure is seen in

Answer 22

Crouzon syndrome

Question 23

Calcified stylohyoid ligament is seen in

Answer 23

Eagle syndrome

Question 24

Rare genetic disorder characterized by absent or hypodontia of teeth
Mild craniofacial abnormalities, glaucoma, flattened face, hypolastic maxilla, protruding lower lip

Answer 24

Riegers syndrome

Question 25

Dental findings in riegers syndrome

Answer 25

Hypoplastic maxilla Protruding lower lip Microdontia Hypodontia Conical crowns Enamel hypoplasia Teeth malposition

Question 26

Autosomal dominant disorder characterized by developmental anomalies derived 1st and 2nd branchial arches

Answer 26

Treacher Collin syndrome Mandibulofacial dysostosis

Question 27

Features of treacher collin syndrome

Answer 27

Hypoplastic zygoma - narrow face Hypertelorism Depressed cheeks Downward slanting eyes Ear defects Hypolastic nasopharyx and oropharyx

Question 28

Oral findings treacher collin syndrome

Answer 28

Mandibular hypoplasia retruded chin Cleft palate Severe mid face deficiency Malocclusion Flatted or aplastic condyle and coronoid process

Question 29

Patient is short stocky build broad and flat face mid skeletal def ocular HYPOTELORISM upward slanting eyes flattened nose

Answer 29

Down syndrome

Question 30

Oral manifestations of down sydrome

Answer 30

Macroglossia with fissures Mouth breathing Open bite Perio disease Delayed eruption Hypondontia Microdontia Post crossbite Malocclusion High arch palate

Question 31

Ankhloglossia

Answer 31

Limitations of tongue movement due to short thick lingual frenum Speech problems Localised gingival recession of lower incisors

Question 32

Fissured tongue is associated with

Answer 32

Down syndrome Geographic tongue Melkersson rosenthal syndrome

Question 33

If condylar hyperplasia is on right side Jaw will deviate towards?

Answer 33

Unaffected side

Question 34

If the condyle is hypoplastic Jaw will shift to

Answer 34

Affected side due to weakness

Question 35

Hemihyperplasia is associated with

Answer 35

Neurofibramatosis McCune albright syndrome

Question 36

Intraoral manifestations of hemihyperplasia include

Answer 36

Unilateral macroglossia Malocclusion Crown and roots - large or prematurely developed Eruption problems

Question 37

Oral manifestation of cerebral palsy

Answer 37

Enamel hypoplasia Delayed eruption Class 2 malocclusion Open bite Mouth breathing Gingival hyperplasia