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BDS3 Operative Dentistry > Occlusion 2 > Flashcards

Occlusion 2 Flashcards

1
Q

how do you mark tooth contacts

A

millers forceps and fine articulating paper

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2
Q

when do you mark tooth contacts

A

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

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3
Q

what do tripodised contacts show

A

where the opposing cusps contact
(ICP stops)

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4
Q

what do you look at in static occlusion

A

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

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5
Q

what are functional cusps

A

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

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6
Q

what are non-functional cusps

A

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

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7
Q

what is a fossa

A

depression on tooth surface

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8
Q

what are the ICP contacts

A

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

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9
Q

how do you view ICP contacts

A

get patient to tap

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10
Q

what is overjet

A

relationship between upper and lower teeth in a horizontal plane

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11
Q

what is overbite

A

vertical overlap of incisors

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12
Q

what is crossbite

A

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

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13
Q

what is an anterior open bite

A

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

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14
Q

what is posterior open bite

A

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

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15
Q

what is canine guidance

A

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

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16
Q

what is a mutually protected occlusion

A

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

17
Q

what is group function

A

mandible moves to working side and multiple teeth contact

18
Q

what type of group function is seen in toothwear

A

bilateral

19
Q

what are the only teeth that touch in protrusion of mandible

A

incisors and canines

20
Q

what are occlusal interferences

A

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

21
Q

what are the types of occlusal interference

A

working side
non working side
protrusive

22
Q

what is a working side interference

A

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

23
Q

what is non working side interference

A

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

24
Q

what is protrusive interference

A

any posterior contact during protrusion

25
Q

why do you want to avoid posterior contacts

A

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

26
Q

what are the 2 types of bruxism

A

eccentric
centric

27
Q

what is eccentric bruxism

A

parafunctional grinding of teeth

28
Q

what is centric bruxism

A

clenching

29
Q

what are the clinical signs of bruxism

A

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

30
Q

what are the types of toothwear

A

multifactorial
abrasion
attrition
erosion
abfraction

31
Q

what are the types of toothwear classified as

A

mild
moderate
severe

32
Q

what is primary occlusal trauma

A

occlusal trauma with an intact periodontium

33
Q

what is secondary occlusal trauma

A

occlusal trauma with a reduced periodontium

34
Q

what is fremitus

A

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

35
Q

what is the examination checklist for occlusion

A

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

BDS3 Operative Dentistry (8 decks)

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