Oc 1

Question 1

horizontal alignment is a balance between?

Answer 1

tongue and cheek/lips

Question 2

tongue thrsuting may acuse?

Answer 2

malocclusion

Question 3

lip muscles may cause?

Answer 3

retrusion

Question 4

intercuspation prevents deviation in?

Answer 4

buccal or lingual direction

Question 5

the size and shape of the jaws and teeth can affect the alignment of?

Answer 5

teeth, spacing, and the resulting curvature of the dental arch

Question 6

curve of spee

Answer 6

the buccal cups of posterior teeth conform to an even curve in an ‘anterior to posterior’ direction

Question 7

curve of wilson

Answer 7

a transverse occlusal curve of posterior teeth in a right to left direction as a seen from the posterior view

Question 8

curve of monson

Answer 8

a spherical curve of approximately 8 inches resting on the buccal cusps of the mandibular posterior teeth (combo of wilson and spee)

Question 9

vertical alignment

Answer 9

1) man posterior tooth crowns tip lingually. Max posterior teeth have a slight buccal inclination
2) from a lateral (B/F) view, all teeth have a slight mesial inclination. The anterior teeth have a slight labial protrusion

Question 10

centric relation

Answer 10

a position of the mandible relative to the maxilla. THis position is a stable and reproducible position generally described as the most anterior, upward, unstrained position of the mandibular condyle in the glenoid fossa

Question 11

centric occlusion

Answer 11

a position determined by the way the teeth contact, when the mandible and maxilla are in centric relation a more commonly used tern when teeth are inthe greatest interdigitation is ‘maximum intercuspation’

Question 12

when closed in maximum intercuspation, the maxillary teeth usually ?

Answer 12

overlap the mandibular teeth to the facial

Question 13

‘Overjet; refers to the amount of facial horizontal overlap of the?

Answer 13

maxillary anterior teeth

Question 14

‘overbite’ refers to the amount of vertical overlap of the?

Answer 14

maxillary anterior teeth below the edges of the mandibular anterior teeth

Question 15

cross-bite occurs when?

Answer 15

mandibular teeth are located facial to the maxillary teeth

Question 16

open bite is the situation when?

Answer 16

maxillary teeth do not contact mandibular teeth when in maximum intercuspation

Question 17

class 1 skeletal classification?

Answer 17

mesiobuccal cusp of the maxillary first molar is in line with the mesiobuccal groove of the mendibular first molar

Question 18

class 2 skeletal classification?

Answer 18

mesiobuccal cups of the maxillary first molar is mesial to the mesiobuccal groove of the mandibular 1st molar
HAS TWO DIVISIONS

Question 19

class 3 skeletal classification?

Answer 19

mesiobuccal cusp of the maxillary 1st molar is distal to the mesiobuccal groove of the mandibular first molar

Question 20

angles of classification

Answer 20

based on the relationship of the permanent first molar to each other. other classification exist based on the positions of canines and incisors

Question 21

skeletal classifications in general?

Answer 21

class 1= normal maxilla-mandible relation
class 2= mandible distal to the maxilla
class 3= mandible mesial to the maxilla

Question 22

class 2 division 1

Answer 22

molars in class 2, but maxillary incisors in normal position

Question 23

class 2 division 2

Answer 23

molars in class 2 with maxillary incisors retruded and inclined lingually