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1

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

2

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

3

what are the 4 stages of the development of the dentition?

- newborn
- primary (deciduous) dentition
- mixed dentition
- permanent dentition

4

describe the newborn dentition

- upper rounded gum pad
- lower 'U' shaped gum pad
- anterior open bite
- often appear skeletal class 2

5

what are the 3 anterior/posterior jaw relationships?

- skeletal class 1
- skeletal class 2
- skeletal class 3

6

describe skeletal class 1

- normal
- mandible 2-3mm posterior to maxilla

7

describe skeletal class 2

mandible retruded relative to maxilla (set back chin)

8

describe skeletal class 3

mandible protruded relative to maxilla (chin stick out)

9

a tooth already erupted at birth is known as?

a natal tooth

10

a clift lip and palate can be unilateral or bilateral, what do both of these terms mean?

unilateral - 1 sided
bilateral - on both sides

11

when on average does the 1st deciduous tooth erupt?

6 months

12

when on average will all deciduous teeth have erupted?

3 years

13

which deciduous teeth tend to erupt first, uppers or lowers?

lowers

14

in what order do the deciduous teeth erupt?

A > B > D > C > E

15

on average, what age do children tend to have a mixed dentition?

6-13

16

what are the first adult teeth to erupt?

1st premolars and incisors

17

what is the first adult tooth to erupt?

lower 6 or lower 1

18

compare permanent incisors to deciduous incisors

- permanent wider
- permanent more proclined

19

how long after the upper 1s erupt should the upper 2s erupt?

6 months

20

which teeth erupt in stage A?

- 1st premolars and incisors

21

which is the last tooth to erupt during stage A?

lateral incisors

22

what is hyperdontia?

extra teeth

23

what is the name of the condition which results in extra teeth?

hyperdontia/ supernumerary teeth

24

what is the name of the condition which results in a tooth/teeth not erupting?

hypodontia

25

what is the name for the condition which results in a small tooth?

microdont

26

what is the name for the condition which results in a large tooth?

macrodont

27

when the upper incisors sit behind the lowers, this is known as?

anterior cross bite or reverse overjet

28

when the top teeth point outwards over the bottom, its known as?

increased overjet

29

during stage B, in what order do the lower teeth tend to erupt?

3 > 4 > 5

30

when the top back teeth bite down inside the bottom back teeth this is known as?

posterior cross bite