Occlusion 2

Question 1

how do you mark tooth contacts

Answer 1

millers forceps and fine articulating paper

Question 2

when do you mark tooth contacts

Answer 2

before preparing a tooth and removing restoration
after placement of a crown and restoration

Question 3

what do tripodised contacts show

Answer 3

where the opposing cusps contact
(ICP stops)

Question 4

what do you look at in static occlusion

Answer 4

incisor relationship
molar relationship
overjet/overbite
cross bites
open bites
individual contacts
RCP-ICP slide

Question 5

what are functional cusps

Answer 5

cusps that occlude with opposing teeth in ICP
lingual cusps of uppers
buccal cusps of lowers

Question 6

what are non-functional cusps

Answer 6

cusps that do not occlude with opposing teeth in ICP
buccal cusps of uppers
lingual cusps of lowers

Question 7

what is a fossa

Answer 7

depression on tooth surface

Question 8

what are the ICP contacts

Answer 8

lingual cusp of upper molar contacts fossa of lower molar
buccal cusp of lower molar contacts fossa of upper molar

Question 9

how do you view ICP contacts

Answer 9

get patient to tap

Question 10

what is overjet

Answer 10

relationship between upper and lower teeth in a horizontal plane

Question 11

what is overbite

Answer 11

vertical overlap of incisors

Question 12

what is crossbite

Answer 12

one or more teeth abnormally positioned buccal or lingually or labially with reference to opposing teeth

Question 13

what is an anterior open bite

Answer 13

lack of vertical overlap of anterior teeth when posterior teeth in full occlusion

Question 14

what is posterior open bite

Answer 14

failure of contact between posterior teeth when teeth are in full occlusion

Question 15

what is canine guidance

Answer 15

mandible moves to working side and there is only contact between canines

Question 16

what is a mutually protected occlusion

Answer 16

canine guidance
posterior disclusion in lateral excursions
no non-working/working side contacts
no protrusive interferences

Question 17

what is group function

Answer 17

mandible moves to working side and multiple teeth contact

Question 18

what type of group function is seen in toothwear

Answer 18

bilateral

Question 19

what are the only teeth that touch in protrusion of mandible

Answer 19

incisors and canines

Question 20

what are occlusal interferences

Answer 20

undesirable tooth contacts that can produce mandibular deviation during closure to ICP or hinder smooth passage to and from ICP

Question 21

what are the types of occlusal interference

Answer 21

working side
non working side
protrusive

Question 22

what is a working side interference

Answer 22

when teeth slide to the working side there are contacts on posterior teeth with similar cusps (buccal cusps contact)

Question 23

what is non working side interference

Answer 23

mandible slides to working side and there are contacts on the non-working side with dissimilar cusps (upper lingual cusps and lower buccal cusp)

Question 24

what is protrusive interference

Answer 24

any posterior contact during protrusion

Question 25

why do you want to avoid posterior contacts

Answer 25

not designed to absorb lateral forces musculature gets a rest if no contacts occlusal trauma and undesirable tooth movements

Question 26

what are the 2 types of bruxism

Answer 26

eccentric centric

Question 27

what is eccentric bruxism

Answer 27

parafunctional grinding of teeth

Question 28

what is centric bruxism

Answer 28

clenching

Question 29

what are the clinical signs of bruxism

Answer 29

toothwear fractured restorations tooth migration tooth mobility muscle pain and fatigue headache earache pain and stiffness in TMJ and surrounding muscles

Question 30

what are the types of toothwear

Answer 30

multifactorial abrasion attrition erosion abfraction

Question 31

what are the types of toothwear classified as

Answer 31

mild moderate severe

Question 32

what is primary occlusal trauma

Answer 32

occlusal trauma with an intact periodontium

Question 33

what is secondary occlusal trauma

Answer 33

occlusal trauma with a reduced periodontium

Question 34

what is fremitus

Answer 34

palpable or visible movement of a tooth when subjected to occlusal forces

Question 35

what is the examination checklist for occlusion

Answer 35

incisor relationship guidance overjet/overbite ICP contacts working/non-working/protrusive contacts pathology