PAEDIATRIC DENTISTRY Flashcards
Explain the cause of an eruption cyst and its presentation
caused by accumulation of fluid or blood in the follicular tissue overlying an erupting tooth.
presents as a bluish blue colour.
most rupture spontaneously
list the medical causes of delayed tooth eruption
hereditary gingival fibromatosis
downs syndrome
gardener syndrome
hypothyroidism
cleidocranial dysostosis
rickets
what is anodontia
complete absence of all teeth
more likely to present with partial anodontia
what is hypodontia (oligodontia)
developmental absence of 1 of more teeth
what is hyperdontia
supernumerary teeth
hypoplasia cause and presentation
disturbance in matrix formation
presents as pitted, grooved or thinned enamel
hypomineralisation/ hypocalcification cause and presentation
disturbance of calcification
enamel appears white, yellow, brown or opaque.
enamel is weakened
turners tooth cause
periapical inflammation on the overlying tooth
what teeth does MIH commonly affect?
6s and permanent incisors
list the main types of amelogenesis imperfecta and their presentation
hypoplastic - thin enamel
hypocalcified - enamel is dull, opaque, honey or brown
hypomaturation - mottled or frosty looking white opacities, sometimes confined to incisal third of crown ‘snow capped teeth’
dentinogenesis imperfecta presentation
opalascent brown or blue hue, bulbous crowns, short roots, narrow pulps.
list the 2 terms for double teeth
fusion
gemination
what teeth does dens en dente usually affect?
2s and premolars
describe dilaceration
a tooth with a distorted crown or root - deviation in linear relationship
can be developmental or traumatic
what is taurodontism?
Taurodontism is a developmental disturbance of a tooth in which body is enlarged at the expense of the roots. An enlarged pulp chamber, apical displacement of the pulpal floor and lack of constriction at the cementoenamel junction are the characteristic features.
list anatomical features of primary teeth
thinner enamel
large pulp horns
broad and flat contact points
bulbous crowns
thin pulp floor and canals
first choice LA for children
lidocaine
second choice LA for children
prilocaine with felypressin
can children receive articaine LA?
if they are over 4 years of age
why is it advised to deposit some LA over mesial and distal bone when anaesthetising a 6
the malar buttress overlies the 6
mesial and distal bone is more permeable
