Occlusion

Question 1

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

Answer 1

retrognathic

Question 2

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

Answer 2

mesognathic

Question 3

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

Answer 3

prognathic

Question 4

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

Answer 4

functional occlusion

Question 5

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

Answer 5

centric occlusion

Question 6

any contact of opposing teeth that occurs before the desirable intercuspation

Answer 6

occlusal prematurity

Question 7

seen when jaws are closed in centric relation

Answer 7

static occlusion

Question 8

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

Answer 8

centric relation

Question 9

abnormal or deviated function

Answer 9

parafunctional

Question 10

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

Answer 10

malocclusion

Question 11

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

Answer 11

normal occlusion

Question 12

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

Answer 12

dental ankylosis

Question 13

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

Answer 13

primate space

Question 14

tooth movement that occurs when disease is present

Answer 14

pathologic migration

Question 15

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

Answer 15

tongue thrust

Question 16

space between 2 adjacent teeth in same arch

Answer 16

diastema

Question 17

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

Answer 17

ankylosis

Question 18

migration with a healthy periodontium

Answer 18

drifting

Question 19

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

Answer 19

facet

Question 20

head holding instrument used to obtain cephalometric radiographs

Answer 20

cephalostat

Question 21

orienting device for positioning the head for radiographic examination and measurement

Answer 21

cephalometer

Question 22

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

Answer 22

orthodontic and dentofacial orthopedics

Question 23

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

Answer 23

cephalometric analysis

Question 24

correction of abnormal form or relationship of bone structures

Answer 24

orthopedics

Question 25

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

Answer 25

occlusal guard

Question 26

primary canine relation is _____ the permanent dentition

Answer 26

same

Question 27

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

Answer 27

mandibular

Question 28

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

Answer 28

maxillary

Question 29

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

Answer 29

mesiobuccal | buccal

Question 30

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

Answer 30

distal | mesial

Question 31

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

Answer 31

mesiodistal

Question 32

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

Answer 32

proper

Question 33

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

Answer 33

end

Question 34

the max molar is _______ mesiodistally than the mand molar

Answer 34

narrower

Question 35

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

Answer 35

end | end

Question 36

primate spaces affect the eruption of the ______

Answer 36

canines

Question 37

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

Answer 37

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

Question 38

made outside of normal range of function

Answer 38

parafunctional contact

Question 39

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

Answer 39

proximal

Question 40

results from occlusal habits and neuroses

Answer 40

parafunctional

Question 41

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

Answer 41

functional

Question 42

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

Answer 42

parafunctional

Question 43

attrition or wear of teeth occurs at this type of contact

Answer 43

proximal

Question 44

creates wear faces and attrition on teeth

Answer 44

parafunctional

Question 45

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

Answer 45

functional contact

Question 46

tooth to tooth contact; bruxism, clenching, tapping

Answer 46

parafunctional

Question 47

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

Answer 47

proximal

Question 48

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

Answer 48

parafuncitonal contact

Question 49

tooth to oral tissues contact; lip or cheek biting

Answer 49

parafunctional

Question 50

pathologic migration

Answer 50

proximal