development of dentition Flashcards
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
- endodontics
- periodontics
- oral surgery
- oral microbiology
- oral and maxillofacial pathology
- prosthodontics
- peadiatrics
- dental public health
- dental and maxillofacial radiology
- special care
- restorative dentistry
- orthodontics
- oral medicine
what are the 4 stages of the development of the dentition?
- newborn
- 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
- normal
- 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?
6 months
when on average will all deciduous teeth have erupted?
3 years
which deciduous teeth tend to erupt first, uppers or lowers?
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?
6-13
what are the first adult teeth to erupt?
1st premolars and incisors