Flashcards in development of dentition Deck (41)
what is orthodontics?
branch of dentistry concerned with facial growth, development of dentition and occlusion, and with the diagnosis, interception and treatment of occlusal anomalies
name the 13 dental specialities
- oral surgery
- oral microbiology
- oral and maxillofacial pathology
- dental public health
- dental and maxillofacial radiology
- special care
- restorative dentistry
- oral medicine
what are the 4 stages of the development of the dentition?
- primary (deciduous) dentition
- mixed dentition
- permanent dentition
describe the newborn dentition
- upper rounded gum pad
- lower 'U' shaped gum pad
- anterior open bite
- often appear skeletal class 2
what are the 3 anterior/posterior jaw relationships?
- skeletal class 1
- skeletal class 2
- skeletal class 3
describe skeletal class 1
- mandible 2-3mm posterior to maxilla
describe skeletal class 2
mandible retruded relative to maxilla (set back chin)
describe skeletal class 3
mandible protruded relative to maxilla (chin stick out)
a tooth already erupted at birth is known as?
a natal tooth
a clift lip and palate can be unilateral or bilateral, what do both of these terms mean?
unilateral - 1 sided
bilateral - on both sides
when on average does the 1st deciduous tooth erupt?
when on average will all deciduous teeth have erupted?
which deciduous teeth tend to erupt first, uppers or lowers?
in what order do the deciduous teeth erupt?
A > B > D > C > E
on average, what age do children tend to have a mixed dentition?
what are the first adult teeth to erupt?
1st premolars and incisors
what is the first adult tooth to erupt?
lower 6 or lower 1
compare permanent incisors to deciduous incisors
- permanent wider
- permanent more proclined
how long after the upper 1s erupt should the upper 2s erupt?
which teeth erupt in stage A?
- 1st premolars and incisors
which is the last tooth to erupt during stage A?
what is hyperdontia?
what is the name of the condition which results in extra teeth?
hyperdontia/ supernumerary teeth
what is the name of the condition which results in a tooth/teeth not erupting?
what is the name for the condition which results in a small tooth?
what is the name for the condition which results in a large tooth?
when the upper incisors sit behind the lowers, this is known as?
anterior cross bite or reverse overjet
when the top teeth point outwards over the bottom, its known as?
during stage B, in what order do the lower teeth tend to erupt?
3 > 4 > 5