L2 - Intraoral Assessment

Question 1

angles classification - general

Answer 1

describing the relationship between upper and lower first permanent molars in the SAGITAL plane

• normal
• class I
• class II
• class III

Question 2

class I malocclusion

Answer 2

normal relationship of the first molars, but malposed teeth, rotations, or other causes

Question 3

Class II malocclusion

Answer 3

lower molar DISTALLY positioned relative to upper molar

end to end or full cusp

Question 4

division 1-2 is in terms of

Answer 4

anterior relation

Question 5

class II div i

Answer 5

all upper teeth in one row

proclined incisors

increased overjet

variable overbite

Question 6

class II div ii

Answer 6

overbite increased

(overbite not)

retroclined incisors

’ relaxed profile’

Question 7

class II subdivision

Answer 7

molar relationship is class II on one side and class I on the opposite side

Question 8

class III malocclusion

Answer 8

lower molar mesially positioned relative to upper molar

associated with underbite

Question 9

overbite

Answer 9

vertical overlap

incisal edge to incisal edge

1-2 mm

Question 10

as bite deepens – what happens to overbite

Answer 10

increases

Question 11

describe dental deep bite and causes

Answer 11

increased overbite

due to dental or skeletal problems

supereruption of maxillary or mandibular or both

lack of posterior stops – loss of VDO

Question 12

dental openbite

Answer 12

negative overbite

infraeruption of incisors

dental or skeletal causes

associated with habits like thumb sucking and tongue thrusting

Question 13

overjet –

Answer 13

horizontal overlap

distance in mm between incisal edge of upper incisor and labial surface of lower incisors

ideally 1-3

measured in outh with plastic ruler

Question 14

normal Over jet

Answer 14

normal 1-3

Question 15

moderate OJ

Answer 15

4-6

Question 16

severe OJ

Answer 16

over 6mm

Question 17

end on end overbite

Answer 17

0

Question 18

overjet with anterior crossbite

Answer 18

reverse OJ or negative OJ values

Question 19

typically causing midline deviations

Answer 19

crowding

premature loss of primary teeth (example of pre-mature loss of c’s)

mandibular shift

Question 20

posterior crossbite

• general
• causes

Answer 20

no constiction of palate
teeth have tipped angulation
usually due to dental not skeletal

uni-or bilateral

narrow upper arch

wide mandible

due to functional mandibular shift

Question 21

brodie bite

Answer 21

posterior - buccal crossbite

uppers hit the buccal of lowers

Question 22

important aspects of the teeth we need to know

Answer 22

1. number / impactions/ missing
2. dental age
3. size and shape (like peg laterals)
4. tooth surface
   - hypoplasia , anomolies
5. wear- excessive attrition?

Question 23

how is the sequence of eruption on mixed dentition*** importance?

Answer 23

this gives us a lot of diagnostic information

Question 24

TIP

include when is this value normally 0?

Answer 24

specific MD angulation along the vertical plane –

gingival portion aligned (0 degrees) or distal to occlusal
portion (positive tip)

looking at the permanent teeth

Question 25

positive tip

Answer 25

the gingival portion is distal to the occlusal portion

Question 26

where is tip generally 0

Answer 26

in the pre-molars

Question 27

torque

Answer 27

specific B-L inclination in relation to the occlusal plane

Question 28

anterior teeth torque

*implications

Answer 28

positive

• if too positive may have case of flarred incisors

if negative on incisors - more negative torque which is then associated with class II div 2

Question 29

0 or negative torque seen

Answer 29

premolars

Question 30

premolars torque

Answer 30

0 or negative

Question 31

most frequent reason for ortho consult

Answer 31

crowding – important factor for treatment planning

Question 32

crowding measured in

Answer 32

mm

Question 33

mild crowding

Answer 33

0-3mm

Question 34

moderate crowding

Answer 34

4-6

Question 35

severe crowding

Answer 35

over 6 mm

Question 36

positive / negative values when determining crowding

Answer 36

negative values – represent crowding

positive values – represent spacing

Question 37

sagital plane evaluates ___ relation of mx-md

Answer 37

the anteroposterior relations of maxilla and mandible

can evaluate prognathism or retronathism

Question 38

prognathism

Answer 38

skeletal protrusion, forward position of the maxilla or mandible relatively to the cranial base of the skull

Question 39

retrognathism

Answer 39

skeletal retrusion, backward position of the maxilla or mandible relatively to the cranial base of the skull

Question 40

skeletal class I

Answer 40

balanced position of both maxilla and mandible

relative t the cranial base of the skull

Question 41

skeletal class II

Answer 41

maxillary prognathsim or mandibular retrognathism or combination

relative t the cranial base of the skull

Question 42

skeletal class III

Answer 42

maxillary retrognathism or mandibular porgnathism or combination

relative t the cranial base of the skull

Question 43

functinoal analysis looks at

Answer 43

1. breathing
2. swallowing
3. speech
4. posture

Question 44

UAFH

include %

Answer 44

upper anterior facial height

45%

from nasal to anterior nasal spine (bottom of nose)

Question 45

LAFH

include %

Answer 45

lower anterior facial height
is 55%

anterior nasal spine –> chin

Question 46

increased or decreased LAFH

Answer 46

in DECREASED –> face becomes ELONGATED looking b/c the UAFH is now impacted as well