ORTHO QUIZ 1

convex

what is this facial profile

concave

what is this facial profile

straight/orthognathic

what is this facial profile

clue to skeletal-dental relationships

what does the overall facial profile provide?

retrognathic

what can a CONVEX profile indicate about MANDIBULAR relationship

prognathic

what can a CONCAVE profile indicate about MANDIBULAR relationship

malocclusion

any anatomic variation of a functional and esthetic optimum

first molars

angle’s classification is based on the relationship of maxillary and mandibular permamanent ____

mesiobuccal cusp

in NORMAL occlusion the BUCCAL groove of the mandibular first mollar occludes with the ______ of the maxillary first molar

catenary curve

line of occlusion through central fossa/cingulum of maxillary and along buccal cusps/incisal of mandibular

class I malocclusion

normal relationship of first molars, but incorrect line of occlusion due to malposed teeth

class I malocclusion

what is the classification of this occlusion?

class II

mandibular first molar (more than half a cusp) distally positioned relative to maxillary first molar

class I

mandibular canine occludes in MESIAL fossa/embrasure of maxillary canine

class II

mandibular canine occludes in DISTAL fossa embrasure or on cusp tip of maxillary canine

class II

what is the classification of this occlusion

class II division 1

molars class II relationship, labioversion of max incisors, excess overjet, steep curve of spee

narrow pallate and retrusive mandible

skeletal characteristic of class II division 1

side with class I occlusion

in the classiffication “class II, division 1 subdivision LEFT” the subdivision refers to?

class II, division 2

molars class II relationship, lingoversion of max central incisors, labioversion of max lateral incisors

class II, division 2

classification?

end to end class II

class II relationship, molars sit on top of each other

class III

mandibular first molar mesially positioned relative to maxillary first molar

class III

classification?

class III

classification?

retrusive maxilla and prominent mandible

class III malocclusion skeletal and facial characteristic

pseudo class III malocclusion

class I molar relationship in retruded position (CR), end to end incisor relationship attainable by manipulating mandible

class III

mandibular canine mesial to maxillary canines

7-8

eruption of max central incisor

8-9

eruption of max lateral incisor

11-12

eruption of max canine

10-11

eruption of max 1st premolar

10-12

eruption of max 2nd premolar

6-7

eruption of max 1st molar

12-13

eruption of max 2nd molar

6-7

eruption of mand central incisor

7-8

eruption of mand lateral incisor

9-11

eruption of mand canine

10-12

eruption of mand 1st premolar

11-12

eruption of mand 2nd premolar

6-7

eruption of mand 1st molar

11-13

eruption of mand 2nd molar

palmer

what is the tooth numbering system used in orthodontics

d

what is the letter for a primary 1st molar in palmer system

c

what is the letter for a primary canine in palmer system

6

what is the number for a permanent 1st molar in palmer system

4

what is the number for a permanent first premolar in palmer system

pre-eruptive

phase from time tooth begins formation to first radiographic evidence of hard tissue formation

pre-functional

phase from crown completion until function is established

funtional

phase from time occlusal function is established until the tooth is lost

pre-emergent eruption

eruptive movement that begins soon after root formation is evident

ectopic eruption

teeth dont develop in normal positions

maxillary 1st molars and cuspids

most common ectopic teeth

resorption of bone and primary tooth roots

processes necessary for eruption

resorption

rate limiting factor in eruption

post-emergent eruption

rapid eruption once tooth emerges until reaching occlusal level

primary

in what dentition are eruption distances equal for all teeth

permanent

in what dentition do the teeth erupt from various distances to final plane of occlusion

lingual/palatal

permanent dentition develops and begin eruption ____ to the primary dentition

2 years

span of primary dentition eruption

12 years

span of permanent dentition eruption

true

T/F delay in primary dentition eruption corresponds with delay in permanent dentition eruption

primate spaces

natural gaps in primary dentition

between lateral and canine

where are the primate spaces located on the MAXILLARY arch

between canine and first molar

where are the primate spaces located on the MANDIBULAR arch

early mesial shift

mesial movement that occurs before the loss of primary molars uses PRIMATE SPACES for mesial movement of permanent first molars

primate

space used by early mesial shift

leeway space

difference in size between the larger primary canines and molars and their smaller permanent successors

late mesial shift

the natural, late-mixed dentition movement (ages 10–12) where permanent first molars drift forward to close the "leeway space" created when premolar replae primaryr molars

false

T/F the time of eruption is more important thatn the sequence of tooth eeruption

mandibular

teeth in which arch erupt first?