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Fixed Prosth, Module I > Occlusion in Fixed Prosth Pt. I > Flashcards

Occlusion in Fixed Prosth Pt. I Flashcards

1
Q

Variable Factorsof Occlusion
—PLANE OF OCCLUSION:
—Imaginary plane containing the incisal edges of the ____ and the distobuccal cusps of the ____
—The teeth are never straight along the line; there is always a curve to follow (thecurve of Spee)
—Generally the plane isatdifferent ____ relative to the floor

A

mandibular canines
mandibular second molars
angles

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2
Q

Variable Factorsof Occlusion
—CURVE OF SPEE:
—Describes how great or little the curve actually is
—It goes from the cusp tip of the ____ through the cusp tips of all the ____h on the sameside
—Acompilation ofindividual planes of occlusion of individual teeth

A

mandibular canine

mandinular posterior teeth

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3
Q

Variable Factorsof Occlusion
—CURVE OF WILSON: —Connects the cusp tips of the
molars ina ____plane
—This changes from the first to the ____ molars
—There is change in the curve of Wilson with ____r of the dentition. In unworn dentition it is ____ from above. It becomes ____ with wear of the dentition or it can be ____ when the buccal cusps are longer than the palatal cusps.

A 
frontal
third
wear
concave
flatter
convex
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4
Q

Variable Factors of Occlusion
— INCISALGUIDANCE
a)OVERBITE: Measured from ____ of maxillary incisors to ____ of mandibular incisors

A

incisal edge

incisal edge

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5
Q

Variable Factors of Occlusion
— INCISAL GUIDANCE
b) OVERJET: Measured from ____ of maxillary incisors along the horizontal plane to ____ of mandibular incisors.

A

incisal edge

facial surface

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6
Q

Variable Factors of Occlusion
—INCISAL GUIDANCE
c) FUNCTIONAL OVERJET: Measured from ____sof mandibular incisors to ____ of maxillary incisors.

A

FOA’s

guiding inclines

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7
Q

Variable Factors of Occlusion
—EFFECTIVE ANTERIOR GUIDANCE:
—Defined as immediate disarticulation of ____ teeth by anterior teeth on movement into mandibular ____
—Generally for this to be able to occur, the functional overjet for the anterior teeth must be at or near ____

A

posterior
excursions
zero

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8
Q

Role of Anterior Teeth

—In a normal occlusal relationship the maxillary and mandibular ____ contact during ____ movements.

A

canines

lateral

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9
Q

Static Occlusal Contacts
—Tooth to tooth vs. tooth to two teeth —
Helps to distribute ____ evenly —Helps to maintain ____
—Angle classifications

A

force

arch integrity

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10
Q

Angle Classifications

• We are looking at both anterior and posterior rela5ve to classifica5ons

  • Class 1 in anterior (right) but not class 1 on the lec side
  • Class 2 division 1 – ____
  • Class 2 division 2 – maxillary central is ____ in a lingual version
  • Class 3 – ____ or class 3 in cross bite. No ____ in either of these
  • Finally, you can have pa5ent with Anterior open bite – caused by late ____
A 
deep bite
tipped
edge to edge
incisal guidance
thumb sucking
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11
Q

• Z – centric holding. This is important to hold the ____. If the pa5ent has too light of an
occlusion/centric holding, then we change their ____.

A

occlusion
occlusion
posterior support

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12
Q

Class II Div I

  • Mandible is retronas5c, or the maxilla is ____
  • This can be corrected with ortho or orthonac5c surgery
  • The rela5onship is off by 1⁄4 - 1⁄2 a tooth
  • Here we don’t have effec5ve ____ guidance
A

prognathic

incisal

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13
Q

Class III

• We see a ____ mandible & a ____ maxilla
• The MB cusp of first maxillary molar is behind the buccal groove of the
first mandibular molar

A

protrusive

retrognathic

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14
Q

Dynamic Occlusal Contacts
—Any movement of the mandible from the centric occlusion position that results in tooth contact is termed ____.
—There are three basic eccentric movements
____
____
____

A

eccentric
protrusive
laterotrusive
retrusive

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15
Q

patient doing a canine guided occlusion. looking posteriorly, we see the posterior teeth ____

A

disarticulate

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16
Q

pa5ent guiding in protrusive movement. All ____ teeth disar5culate. This is a protected occlusion. They are not picking up occlusion on posterior teeth. This is what we want in ____ pa5ents. Not the case in dentures cases. We will learn more in later courses

A

posterior

dentate

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17
Q

Contacts vs. Interferences

—Contacts: The patient has no ____ associated with the occlusion. The occlusion is either ____ or ____.
—Interferences: The patient has ____ associated with the occlusion.

A

pathology
ideal
physiologic
pathology

18
Q

Protrusive
—The mandible moves ____ from the ____ position.
—The predominant protrusive contact occurs between the ____ teeth.

A

forward
centric occlusion
maxillary and mandibular anterior

19
Q

Protrusive
• What contacts is the ____ of maxillary against ____ of mandibular teeth
• We don’t want ____ teeth to touch. We want them to disar5culate!

A

distal inclines

mesial inclines

20
Q

Laterotrusive (Working)

—Most function occurs on the ____ (lateral movement) the side to which the mandible is shifted.

—Working contacts and cross-tooth contacts occur on the ____.

—Working contacts occur between the ____ of maxillary buccal (guiding) cusps and the ____ of the mandibular buccal (supporting) cusps.

—Cross-tooth contacts occur between the outer inclines of the maxillary supporting cusps____ and the ____ of the mandibular lingual cusps (non- supporting).

A 
working side
working side
inner inclines
outer inlcines (FOA's)
FOA's
inner inclines
21
Q

Laterotrusive

We look from ____ plane
• Working movement on one side (points to right side)
• On opposite side we have a non-working side (points to lec side)
• We have ____ contact on non working side and
____ on working side

A

mediotrusive

laterotrusive

22
Q

Working Interference

Happens when we have a posterior tooth that is contac5ng when we guide on the working side, but not the ____

When do you think we will have issues with working interferences? – a pa5ent with normal maximum intercuspa5on might get working interference when we give a new ____, and when we check the bite the pa5ent says feels comfortable
But when pa5ent ____ they complain that it feels weird. When you put the paper in, you may find that the provisional was too bulky on inner incline so now when it guides you created a working interference
The working interference has to be adjusted for because it adds lateral forces, discomfort, and pain to pa5en

A

canine
crown
chews

23
Q

CrossTooth Contact/
Interference

• We are guiding on working side. If its possible, the ____ cusps contact.
• Contact between ____ of mandible lingual non suppor5ng cusps (points to
green dots)against maxillary ____ area (points to green dots)
• Many 5mes ini5ally you have cross tooth interferences when you do ____ for a provisional. This is because the cusps are too bulky. It is something you will check for.

A

lingual
inclines
FOAs
block carving

24
Q

Mediotrusive (Non-working)
—Formerly balancing contacts, but now the teeth disclude.
—Potential sites of contact on the ____ of maxillary lingual and mandibular buccal cusps.
—Mediotrusive contacts are ____.

A

inner inclines

interferences

25
Q

Non-working Interference

• Common on ____ in pa5ents. Pa5ents will complain of pain.
• What is another situa5on where you can have non working interference in the mouth? – When
suppor5ng cusps are out of alignment like if the pa5ent had an ____ tooth. So you end up with loss of a tooth & loss of ideal occlusion.
• Is this easy to fix? – simply grinding away at the marks is not a long term solu5on. The teeth will shic back together and non working interference will return. So you leave the cusps in contact but you leave a ____ so that it slides through. But you don’t loose the ____ by grinding down
the suppor5ng cusps

A

third molars
extruded
channel
VDO

26
Q

Working, Cross tooth, Non-working

Take a look at all

A

yay!

27
Q

Retrusive

  • Have the pa5ent move ____
  • Maxillary ____ and mandibular ____ contactv
A

back
medial inclines
distal inclines

28
Q

History
—Bilateral Balanced Occlusion
—Based on theories related to ____
—Became apparent these principles did not apply to ____
—Resulted in ____, mobile teeth and gingival clefting

A

dentures
fixed prosthodontics
premature wear

29
Q

Unilateral Balanced Occlusion

—Group Function
—Earlier rehabs were modified by eliminating ____
—Led to the functionally generated path or ____ technique
—Importance of ____ guidance discovered and incorporated into the occlusal scheme

A

balancing contacts
“wax chew-in”
incisal guidance

30
Q

Group Function

—Based on the philosophy that the more teeth to share the load the better
____ guidance established first
—Spreads working side contact over ____ or more teeth in
each arch
—These teeth should be adjacent to each other —Involves ____ cusps only

A

canine/incisal
3
buccal

31
Q

Cuspid Rise Occlusion
—Cuspids on the ____ disclude all other teeth during working movement.
—This does not happen ____
____ inch of space between opposing cuspids —Posterior occlusion involves ____
—All posterior teeth disclude in protrusive movements —CR = ____

A 
working side
immediately
0.001
tripodization
CO
32
Q

Cuspid Rise Occlusion/Canine Guidance

—Most ____ occlusal scheme in fixed prosthodontics —Most clinicians combine the concept of organic
occlusion and ____

A

common

cuspid rise occlusion

33
Q

Optimum FunctionalOcclusion

—CR—for purposes of this lecture it is the most ____ position.
—CR=CO with even and ____ contact of ____ teeth
—Anterior teeth contact, but more ____ than the posterior

A

anterior superior
simultaneous
posterior
lightly

34
Q

Optimum FunctionalOcclusion

—All tooth contacts provide ____ loading of occlusal forces.
____ (laterotrusive) movements have adequate tooth guided contacts to disclude the ____ (mediotrusive) sideimmediately.
—Guidance is provided by the ____.

A

axial
working
nonworking
canines

35
Q

Optimum FunctionalOcclusion

____ movements have adequate tooth guided contacts on the ____ teeth to disclude all posterior teeth immediately.
—Basically this is the definition of ____ protected occlusion.

A

protrusive
anterior
mutually

36
Q

Optimum FunctionalOcclusion
—Ideal —
Physiologic —
Pathologic

Lec photo: ____ occlusion

Right photo: This pa5ent might be caries free and periodontally healthy. This occlusion is ____. The pa5ent could get treatment for aesthe5cs. If they are having TMJ issues they would seek out ortho treatment

A

ideal physiologic

physiologic

37
Q

Pathologic Occlusion

—Occlusal relationship capable of producing pathogenic changes
—Signs and symptoms
—Teeth – ____, fractures, fremitus —Periodontium – ____, widened PDL —Musculature – ____ or chronic pain —TMJ – pain…

A

wear
mobility
acute

38
Q

Goals of Occlusal Therapy

—Direct occlusal forces along long axes of teeth —Simultaneous contact for ____
—Eliminate ____ contacts/interferences —Provide ____

A

CR-CO
eccentric
canine guidance/group function

39
Q

Occlusal Treatment

____ —Grind —____ —Splint

A

move

restore

40
Q

Occlusal Therapy

—Splint/appliance —Types
—Hard splint
—Soft splint
—May be diagnostic or ____

  • Splint therapy involves ____ (like a retainer so the posterior teeth can’t contact and pa5ent can’t grind teeth, thus breaking the grinding cycle).
  • (Poin5ng to boNom lec photo). This cannot be work all day, 24/7. If you wore it all day, you would get ____ erup5on.
  • For pa5ents with posterior bite collapse, you put the pa5ent in a splint to open up their ____
A

definitive
guards
posterior
occlusal vertical dimension

41
Q

Occlusal Therapy

—Reposition ____—Decrease ____ activity —Modify ____ —Change ____

A

condyle/disk
muscular
behavior
occlusion

42
Q

CASES!

A

Take a look!

Fixed Prosth, Module I (13 decks)

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