march 31 Flashcards
macrodontia?
microdontia?
peg lateral?
macrodontia-mega teeth
microdontia-small teeth
-a peg lateral is a microdontia tooth that is a lateral incisor
accentuated palatal pit?
this occurs especially in lateral incisors and happens on the palatal (obviously) side of the tooth
dens invaginatus
- this translates to tooth within a tooth
- it is an invagination that is lined with enamel
type 1 - occurs just in the enamel
type 2-goes below CEJ
type 3- extends into the root and perforates in the apical or lateral areas but doesnt interfere with the pulp (*this type can get nasty and you can get bacteria and other gross stuff extending from the tooth)
dens evaginatus
- outward growth of enamel
- often seen as a little point in the middle of the occlusal surface
- often has a small piece of pulp in it (so you have to be careful and cant just grind/cut it off)
talon cusp
- looks like an extra cusp/outpouching of enamel, need to be careful with it since it has pulp going into it
- if on the palatal side of tooth often just leave it
dilaceration
- a kink or sharp bend in tooth or root
- can be developmental or due to trauma
hypercementosis
- extra cement on tooth roots
- seen as thickening/blunting of roots
- it is all contained within the lamina dura (this is a way to tell it apart from other things)
gemination
when a single tooth bud tries to divide
still lead to a normal tooth count
fusion
this is in contrast to gemination, this is when teeth are fused together, leads to a decrease in the tooth count, on a radiograph you would see fusion or 2 teeth with separate roots
taurodontism
Taurodontism is a condition found in the molar teeth of humans whereby the body of the tooth and pulp chamber is enlarged vertically at the expense of the roots. As a result, the floor of the pulp and the furcation of the tooth is moved apically down the root
often in 1st permanent molars
supernumerary teeth
supplemental teeth
supernumerary teeth - teeth in addition to the normal tooth count
supplemental teeth - a kind of supernumerary tooth where it can be hard to distinguish which is extra and which is the proper tooth
distodens
supernumerary teeth in the molar region
mesioden
A mesiodens is a supernumerary tooth in the maxillary anterior incisor region.
cleidocranial dysplasia/dystostosis
gardners syndrome
- someone with this would have impacted teeth, supernumerary or missin tooth and abnormal root formationdense bone islands of the jaw
- also show multiple
- it is relevant to us because if we could identify it we could refer them for a colonoscopy because this a condition highly associated with colon cancer
enamel pearl
small globules of enamel often on roots in the furcation area
formed from hertwigs epithleia root sheath
contain pulp so dont just chop em off
amelogenesis imperfecta
genetic mutation where enamel is messed up and doesnt develop properly (but other parts of tooth are fine)
-delayed eruption and prone to impaction
enamel hypoplasia
defect in teeth which enamel is hard but is thin and deficient in amount
dentinogenesis imperfecta
dentin dysplasia type 1?
genetic conidtion where there is dentin dysplasia
leads to weak teeth that get easily fractured and are discoloured
type 1 dentin dysplasia is basically your worst nightmare, teeth look normal but there is no roots and htye get rarefying osteitis and their teeth can pretty much just fall out
odontodysplasia
aka ghost teeth
dentin is hypoplastic and hypocalcified
often causes delayed eruption and is common in central incisors
pulp stones
calcification in the pulp
this is very common and you dont really need to do anything about it
can only be diagnosed on a radiograph
