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ORTHO > MALOCCLUSION > Flashcards

MALOCCLUSION Flashcards

1
Q

T/ F

Dr. Angle gave one of the best examples of a hypothesis–his “key to occlusion.”

→ most important teeth are the 1st permanent molars because
they are the most constant in their positions

A

T

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2
Q

T/ F

Dr. Angle gave one of the best examples of a hypothesis–his “key to occlusion.”

→ specifically upper 1st permanent molars
→ they are the very cornerstones and thus they became basis for
his classification of malocclusion

A

T

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3
Q

ARCH FORMS

A

→ narrow
→ parabolic or average
→ wide

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4
Q

vertical relationship of anterior teeth

A

OVERBITE

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5
Q

incisal edge of maxillary tooth within the incisal third of the facial surface of the mandibular incisor

A

NORMAL OVERBITE

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6
Q

incisal surfaces occlude

A

EDGE-TO-EDGE BITE

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7
Q

maxillary anterior teeth are lingual to mandibular anterior teeth

A

ANTERIOR CROSSBITE

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8
Q

occurs in Angle’s Class III malocclusion

A

ANTERIOR CROSSBITE

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9
Q

incisal edge of the maxillary tooth is at the level of the cervical third of the facial surface of the mandibular anterior tooth

A

DEEP (SEVERE) ANTERIOR OVERBITE

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10
Q

→ lack of incisal contact
→ posterior teeth in normal occlusion

A

OPEN BITE

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11
Q

molars in cusp-to-cusp occlusion as viewed from the facial

A

END-TO-END BITE

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12
Q

horizontal relationship of anterior teeth

A

OVERJET

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13
Q

→ maxillary incisors are labial to the mandibular incisors

A

OVERJET

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14
Q

maxillary incisors are lingual to the mandibular incisors

A

UNDERJET

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15
Q

only half of the crown is misaligned

A

CROSSBITE

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16
Q

→ can be an anterior or posterior crossbite
→ can be unilateral or bilateral

A

CROSSBITE

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17
Q

→ entire crown is malpositioned

A

BUCCAL SCISSORS CROSSBITE

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18
Q

complete buccalversion

A

BUCCAL SCISSORS CROSSBITE

19
Q

entire crown is lingually displaced

A

LINGUAL SCISSORS CROSSBITE

20
Q

T/ F

retroclined is the opposite of proclined incisors

A

T

21
Q

T/ F

in cases of a missing tooth, look at the 2nd molar relationships
or canines to classify a malocclusion

A

T

22
Q

→ curve formed by buccal cusps of mandibular posterior teeth and incisal edges of mandibular anterior teeth
→ cannot be seen when maxillary and mandibular teeth are in contact

A

LINE OF OCCLUSION (BONWILL)

23
Q

when a person smiles, the curve line following the incisal edges of maxillary teeth

A

SMILE ARC

24
Q

“esthetic line of dentition”

A

SMILE ARC

25
Q

the anterior portion of this esthetic line of dentition

A

SMILE ARC

26
Q

straight

A. Class I
B. Class II
C. Class III
D. Class II, III
E. Class I ,III

A

A

27
Q

convex

A. Class I
B. Class II
C. Class III
D. Class II, III
E. Class I ,III

A

D

28
Q

normal (ideal) occlusion

A. Class I
B. Class II
C. Class III
D. Class II, III
E. Class I ,III

A

A

29
Q

molar relationship:

mesiobuccal cusp of maxillary first permanent molar occludes with the buccal groove of the mandibular first permanent molar

A. Class I
B. Class II
C. Class III
D. Class II, III
E. Class I ,III

A

A

30
Q

distoclusion

A. Class I
B. Class II
C. Class III
D. Class II, III
E. Class I ,III

A

B

31
Q

molar relationship:
o buccal groove of the mandibular first permanent molar is distal to the mesiobuccal cusp of the maxillary first permanent molar by at least the width of a premolar

A. Class I
B. Class II
C. Class III
D. Class II, III
E. Class I ,III

A

B

32
Q

mesioclusion

A. Class I
B. Class II
C. Class III
D. Class II, III
E. Class I ,III

A

C

33
Q

molar relationship:
o buccal groove of the mandibular first permanent molar is mesial to the mesiobuccal cusp of the maxillary first permanent molar by at least the width of a premolar

A. Class I
B. Class II
C. Class III
D. Class II, III
E. Class I ,III

A

C

34
Q

CLASS I

crowded incisors

A. Type I
B. Type II
C. Type III
D. Type IV
E. Type V

A

A

35
Q

CLASS I

labioverted/protruded maxillary incisors

A. Type I
B. Type II
C. Type III
D. Type IV
E. Type V

A

B

36
Q

CLASS I

pseudo-class III or anterior crossbite

A. Type I
B. Type II
C. Type III
D. Type IV
E. Type V

A

C

37
Q

CLASS I

posterior cross-bite

A. Type I
B. Type II
C. Type III
D. Type IV
E. Type V

A

D

38
Q

CLASS I

mesial drifting of molars due to premature loss of tooth

A. Type I
B. Type II
C. Type III
D. Type IV
E. Type V

A

E

39
Q

all anteriors protruded

A. Division I
B. Division II

A

A

40
Q

1 or more incisors retruded

A. Division I
B. Division II

A

B

41
Q

CLASS III

edge to edge anteriors

A. Type I
B, Type II
C. Type III

A

A

42
Q

CLASS III
crowded mandibular anteriors & they are in crossbite

A. Type I
B, Type II
C. Type III

A

B

43
Q

CLASS III

crowded maxillary anteriors & they are in crossbite

A. Type I
B, Type II
C. Type III

A

C

ORTHO (7 decks)

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