angle's classification

Question 1

normal occlusion

Answer 1

molar relationship + line of occlusion

Question 2

for normal Class I occlusion, what fits in what

Answer 2

MB cusp (upper first molar) fits in MB groove (lower first molar)

Question 3

all posterior upper teeth are __ to the lower counterpart

Answer 3

distal

Question 4

3 intra-maxilary deviations

Answer 4

• misaligned teeth (rotations, irregularity)
• spacing
• crowding

Question 5

4 inter-maxillary deviations

Answer 5

• crossbite
• overjet
• overbite
• molar relationship

Question 6

class II malocclusion

Answer 6

MB cusp is mesial to MB groove

Question 7

divisions of class II malocclusion

Answer 7

0 - normal
1 - proclined max inc
2-retroclined max inc

Question 8

class III malocclusion

Answer 8

MB cusp is distal to MB groove

Question 9

class I cuspid

Answer 9

upper canine is slightly distal to lower (normal)

Question 10

class II cuspid

Answer 10

upper canine is mesial/forward (ends up tip to tip)

Question 11

class III cuspid

Answer 11

upper canine is distal (tip of 3 is with tip of 4)

Question 12

subdivisions

Answer 12

used to classify occlusion if only ONE side deviates from class I occlusion

Question 13

occlusion changed bc premature loss of tooth and subsequent drift

Answer 13

mutilation

Question 14

teeth move bc loss of tooth

Answer 14

drifting

Question 15

what guides the eruption of the lower 1st permanent molar

Answer 15

primary 2nd molar

Question 16

mesial step

Answer 16

lower E is mesial to upper E

Question 17

distal step

Answer 17

lower E is distal to upper E

Question 18

flush plane becomes

Answer 18

class I or class II

Question 19

mesial step (1mm) becomes

Answer 19

class I or class III

Question 20

distal step becomes

Answer 20

ALWAYS class II

Question 21

primary spaces

Answer 21

mandible - distal to canine

maxilla - mesial to canine

Question 22

early mesial shift

Answer 22

mesial movement of 1st permanent molars into primate spaces

Question 23

leeway space

Answer 23

difference bt width of deciduous and permanent

Question 24

late mesial shift

Answer 24

mesial movement of 1st permanent molars into leeway space