Dental Anomalies

Question 1

primary hypodontia %

Answer 1

0.1-0.9%

Question 2

permanent hypodontia %

Answer 2

3.5-6.5%

Question 3

conditions w/ hypodontia

Answer 3

ectodermal dysplasia
down syndrome
cleft palate
hurler syndrome
incontinentia pigmentii

Question 4

common teeth to be missing

Answer 4

lower premolar 1.2-2.5%
upper laterals 1.0-2.0%

Question 5

hypodontia management

Answer 5

overdenture
partial denture
composite
porcerlain veneer
fixed prosthesis

Question 6

supernumerary types

Answer 6

concical (cone)
tuberculate (barrel w/ tubercles)
supplemental (extra in normal series)
odontome (irregular, compound/complex)

Question 7

most common cause for delayed permanent incisor?

Answer 7

supernumerary teeth

Question 8

microdontia?

Answer 8

peg shaped lateral (f>m) 2.5%

Question 9

taurodontism

Answer 9

flame shaped pulp
6.3% in uk

Question 10

short root anomaly

Answer 10

perm max incisors
2.5%
15% also have on canines and premolars

Question 11

root anomaly causes?

Answer 11

radiotherapy
dentine dysplasia
accesory roots

Question 12

amelogenesis imperfectia types?

Answer 12

hypoplastic
hypomineralised
hypomaturational
mixed forms

Question 13

environmental enamel hypoplasia causes?

Answer 13

systemic
nutritional
metabolic (liver disease)
infection (measles)

Question 14

localised enamel hypoplasia causes?

Answer 14

trauma
infection to primary tooth (abcess)

Question 15

fluorosis treatment?

Answer 15

microabrasion
veneers
vital bleaching

Question 16

MIH formed when?

Answer 16

prenatal
neonatal
postnatal

Question 17

prenatal causes for MIH

Answer 17

rubella
cardiac and kidney disease
congenital syphyllis

Question 18

neonatal causes for MIH

Answer 18

prematurity
meningitis

Question 19

postnatal causes for MIH

Answer 19

measles
chickenpox
TB
Pneumonia
Vit A,C&D deficiency

Question 20

Amelogenesis imperfectia

Answer 20

1:14,000
familial inheritance
x- linked
autosomal dominant/ recessive

Question 21

diagnosis of ameloenesis imperfectia

Answer 21

family hx
check all teeth
check size, structure and colour
radiographs

Question 22

gene mutation of amelogenesis

Answer 22

enamel extracellular matrix
amelogenin
enamelin
kallikrein 4

Question 23

types of AI

Answer 23

hypoplastic (crystals dont grow to correct length)
hypomineralised (fail to grow in thickness and width)
(hypomaturational (nomal length, incomplete thickness and width, incomplete mineralisation)

Question 24

Problems with Amelogenisis Imperfectia

Answer 24

sensitivity
caries susceptibility
poor aesthetics
poor OH
delayed eruption
AOB

Question 25

treatment for Amelogenesis Imperfectia

Answer 25

preventative therapy composite veneers/ wash fissure sealants metal only SSC ortho

Question 26

systemic diseases w/ enamel defects

Answer 26

incontinenta pigmentii downs prader-willi hurlers pseudohypoparathyroidism

Question 27

types of dentine anomalies?

Answer 27

dentine dysplasia (pulpal obliteration, short constricted roots, normal crown) odontodysplasia (thin enamal and dentine, large pulp chamber, ghost teeth) systemic (nutritional, metabolic, drugs)

Question 28

dentinogenesis imperfectia types

Answer 28

Type 1 Osteogenesis imperfectia Type 2 Autosomal dominant Brandywine

Question 29

diagnosis of Dentinogenesis Imperfectia

Answer 29

appearance family hx associated OI radiotherapy (bulbous corwn, obliterated pulp) enamel loss abscess formation on OPT

Question 30

Type 1 Dentinogenesis w/ OI symptoms

Answer 30

blue sclera of eye apparent

Question 31

Brandywine?

Answer 31

native american indian irish afro-american

Question 33

dentinogenesis problems

Answer 33

aesthetics caris susceptibility spontaneous abscess poo porgnosis

Question 34

dentinogenesis treatment

Answer 34

prevention copostie veneers overdentures removable prosthesis SSC

Question 35

dentine only hereditary defects?

Answer 35

DI type 2 dentine dysplasia type 1&2 fibrous dysplasia of dentine

Question 36

dentine defects associated w/ disorder

Answer 36

osteogenesis imperfectia ehlers danlos syndrome rickets hypophosphatasia

Question 37

overall dental management for anomalies?

Answer 37

continous dental care interceptive ortho removable pros crown and bridge management of growth and developement

Question 38

cementum anomalies

Answer 38

cleidocranial dysplasia (hypoplasia of cellular component) hypophosphatasia (hypoplasia of cementum, early loss of primary teeth)

Question 39

premature eruption

Answer 39

high birth weight precocious puberty natal/ neonatal teeth 1: 2500

Question 40

delayed eruption

Answer 40

preterm low birthweight malnutrition downs hypothrydoism/hypopituitarism gingival hyperplasia/ overgrowth

Question 41

premature exfoliation

Answer 41

trauma following pulpotomy hypophosphatsia cyclic neutropaenia chedial- higashi syndrome histiocytosis x

Question 42

delayed exfoliation

Answer 42

infra-occlusion (lower D) hypodontia ectopic permanent succesor following trauma (ankylosed)