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126 > Occlusion > Flashcards

Occlusion Flashcards

from wilkins workbook

1
Q

patient presents with prominent maxilla and a mandible posterior to normal relationship. this is known as a convex or ______ profile

A

retrognathic

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2
Q

patient has slightly protruded jaws, which give facial outline relatively flat appearance. this is known as a straight or _____ profile

A

mesognathic

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3
Q

patient has a prominent, protruded mandible and normal maxilla. this is known as concave, or ______ profile

A

prognathic

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4
Q

consists of all contacts during chewing, swallowing, or other normal action

A

functional occlusion

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5
Q

maximum intercuspation or contact of the teeth of the opposing arches; also called habitual occlusion

A

centric occlusion

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6
Q

any contact of opposing teeth that occurs before the desirable intercuspation

A

occlusal prematurity

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7
Q

seen when jaws are closed in centric relation

A

static occlusion

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8
Q

most unstrained, retruded physiologic relation of the mandible to the maxilla from which lateral movements can be made

A

centric relation

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9
Q

abnormal or deviated function

A

parafunctional

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10
Q

any deviation from the physiologically acceptable relationship of the maxillary arch and/or teeth to the mandibular arch and/or teeth

A

malocclusion

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11
Q

all teeth in the max arch are in maximum contact with all teeth in mand arch in a definite pattern; max teeth slightly overlap the mand teeth on facial surfaces

A

normal occlusion

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12
Q

rigid fixation of a tooth to the surrounding alveolus as a result to ossification of the periodontal ligament; prevents eruption and orthodontic movement

A

dental ankylosis

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13
Q

diastema, or gap, in the tooth row occasionally observed in the human primary dentition

A

primate space

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14
Q

tooth movement that occurs when disease is present

A

pathologic migration

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15
Q

infantile pattern of suckle-swallow movement in which tongue is place between incisors teeth or alveolar ridges

A

tongue thrust

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16
Q

space between 2 adjacent teeth in same arch

A

diastema

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17
Q

union or consolidation of two similar or dissimilar hard tissues previously adjacent but not attached

A

ankylosis

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18
Q

migration with a healthy periodontium

A

drifting

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19
Q

shiny, flat, worn spot on surface of a tooth, frequently on side of a cusp

A

facet

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20
Q

head holding instrument used to obtain cephalometric radiographs

A

cephalostat

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21
Q

orienting device for positioning the head for radiographic examination and measurement

A

cephalometer

22
Q

specialty area of dentistry concerned with the diagnosis, supervision, guidance and treatment of the growing and mature dentofacial structures

A

orthodontic and dentofacial orthopedics

23
Q

process of evaluating dental and skeletal relationships by way of measurements obtained directly from the head or from cephalometric radiographs and tracings made from the readiographs

A

cephalometric analysis

24
Q

correction of abnormal form or relationship of bone structures

A

orthopedics

25
Q

removable dental appliance usually made of plastic that covers a dental arch and is designed to minimize the damaging effects of bruxism and other oral habits

A

occlusal guard

26
Q

primary canine relation is _____ the permanent dentition

A

same

27
Q

when a pt has primate spaces in the _____ arch, you see these between the canine and first molar

A

mandibular

28
Q

in the______ arch, you see primate spaces between lateral incisor and canine

A

maxillary

29
Q

you can expect the second primary molar relation to appear s the _____ cusp of the max 2nd prim molar occluding with the ____ groove of the mand 2nd prim molar

A

mesiobuccal

buccal

30
Q

there can be variations in distal surfaces relationships, called terminal steps. an example is when the _____ surface of mand prim molar is _______ to that of the max, thereby forming a mesial step

A

distal

mesial

31
Q

although there can be morphologic variation in molar size, max and mand prim molars are approx same in _______ width

A

mesiodistal

32
Q

when a pt. has a terminal step, the 1st perm molar erupts directly into _______ occlusion

A

proper

33
Q

a terminal plane occurs when the ______ surfaces of the max and mand prim molars on same vertical plane

A

end

34
Q

the max molar is _______ mesiodistally than the mand molar

A

narrower

35
Q

when a pt has a terminal plane the first perm molars erupt _____ to _____

A

end

end

36
Q

primate spaces affect the eruption of the ______

A

canines

37
Q

functional occlusion consists of all contacts during chewing, swallowing, and other normal action. functional occlusion is associated with performance. list reasons why normal functional occlusion benefits patient

A

such forces necessary to maintain occlusal relationship to teeth and guide during eruption

38
Q

made outside of normal range of function

A

parafunctional contact

39
Q

when contact lost, teeth can drift into spaces created by unrelpaced missing teeth

A

proximal

40
Q

results from occlusal habits and neuroses

A

parafunctional

41
Q

normal contact that is made btwn max teeth and mand teeth during chewing and swallowing

A

functional

42
Q

potentially injurious to periodntal supporting structures, but only in presence of bacterial plaque and inflammatory factors

A

parafunctional

43
Q

attrition or wear of teeth occurs at this type of contact

A

proximal

44
Q

creates wear faces and attrition on teeth

A

parafunctional

45
Q

each contact is momentary, so total contact time is only few minutes each day

A

functional contact

46
Q

tooth to tooth contact; bruxism, clenching, tapping

A

parafunctional

47
Q

serves to stabilize position of teeth in dental arches and prevent food impaction btwn teeth

A

proximal

48
Q

tooth to hard object contact, nail biting, occupational use (tacks or pins), use of smoking equipment (pipestem or hard cig holder)

A

parafuncitonal contact

49
Q

tooth to oral tissues contact; lip or cheek biting

A

parafunctional

50
Q

pathologic migration

A

proximal

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