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Occlusion > Test 1 > Flashcards

Test 1 Flashcards

1
Q

What defines class 1

A

Mesiobuccal cusp of max 1st molar is centered on the buccal groove of the mandibular 1st molar

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2
Q

Class II is defined by what

A

Mandibular first molar is distal to the maxillary first molar

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3
Q

What defines class III

A

Mandibular first molar is mesial to maxillary first molar

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4
Q

Anterior guidance:

A

Anterior teeth limit mandibular movements

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5
Q

Bennett angle

A

Angle between sagittal plane and average path of non-working condyle

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6
Q

Balanced articulation (occlusion)

A

Simultaneous occlusal contact of teeth in centric and eccentric positions

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7
Q

Border movement:

A

Mandibular movement at the limits dictated by an atomic structures

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8
Q

Border position

A

A position of the mandible when it is at the limit of active or passive movement

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9
Q

Canine protected articulation (canine guidance, cuspid guidance, cuspid rise)

A

Vertical and horizontal overlap of canine teeth disengage the posterior teeth in excursive movements of the mandible

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10
Q

Centric cusps (supporting cusps, functional cusps, stamp cusps)

A

Lingual of maxillary and buccal of mandibular

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11
Q

Centric occlusion

A

Occlusion of opposing teeth when mandible is in centric relation

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12
Q

Centric relation

A

Most retrusive position of mandible

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13
Q

Condylar guidance:

A

Part on articulator that controls movement of mobile member

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14
Q

Curve of spee

A

Curve from canine to molar

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15
Q

Curve of wilson

A

Viewed from front lingual cusps of mandibular teeth are lower and mandibular teeth have a lingual tilt to their crowns

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16
Q

Mandibular translation (Bennett movement, sideshift)

A

Mediolateral movment of mandible when viewed in frontal plane

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17
Q

Mutually protected articulation:

A

Posterior teeth prevent excessive contact of anterior teeth

Anterior teeth disengage the posterior in all excursive movements

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18
Q

Physiologic occlusion

A

Absent of signs and symptoms or pathosis

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19
Q

Deflective occlusal contacts

A

Any tooth surface that hinders the desired occlusal contact during movement

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20
Q

In lateral movement, the non working condyle moves how

A

Forward and medial

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21
Q

How to find interocclusal rest distance?

A

VDR-VDO

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22
Q

Anterior guidance is determined by what 2 things

A

Lingual concavities of maxillary anterior teeth

Vertical and horizontal overlap of maxillary and mandibular anterior teeth

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23
Q

What are the 8 determinants of mandibular movement? (3 posterior, 2 anterior, 3 other)

A

Posterior:
Inclination of articular eminence
Medial wall of glenoid fossa
Intercondylar distance

Anterior:
Horizontal overlap of anterior teeth
Vertical overlap of anterior teeth

Other:
Occlusal plane
Curve of spee
Neuromuscular response

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24
Q

Arcon vs. non arcon articulator

A

Arcon have condyles connected to lower member

Non-arcon have condyles connected to upper member

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25
Q

The earbow records the relation between what

A

Maxillary arch and intercondylar axis

26
Q

Mandibular cast is related to the maxillary cast by what

A

Centric relation record

27
Q

Earbow has to be parallel to what

A

Interpupillary line

28
Q

3 ways to manipulate into CR

A

Chin point guidance
Anterior deprogrammer
Bilateral manipulation

29
Q

Occlusal equilibration:

A

Selective grinding to reshape tooth surfaces that interfere with harmonious contact

30
Q

4 occlusal treatment goals

A

Direct forces along long axes

MI contact is all at same time and same intensity

Smooth protrusive path (posterior teeth don’t get in way)

Working side contacts should not be prevented by non working side interferences

31
Q

What’s responsible for most failures in equilibration?

A

Improper manipulation of the mandible

32
Q

Equilibration procedures can be divided into 4 parts:

A

Reduction of occlusal tooth surfaces that interfere with centric relation

Reduction of tooth structure that interferes with lateral excursions

Elimination of posterior tooth structure that interferes with protrusive excursions

Harmonization of the anterior guidance

33
Q

Sides to grind to eliminate anterior slide

A

MUDL

34
Q

Line of closure interferences cause the mandible to deviate ___ from the contact point to MI

A

Right or left

35
Q

When the mandible deviates toward the cheek the grinding rule is:

A

BULL

36
Q

If the mandible deviates toward the tongue while closing, the grinding rule is

A

LUBL

37
Q

T/F the vertical dimension of occlusion after equilibration at CR should be different than before adjustment

A

False, should be the same

38
Q

Lateral non-working interferences can be adjusted by using grinding rule

A

BULL

39
Q

If group function is to be achieved from working side interferences, ____ has to be done

A

Working side inclines are precisely adjusted

40
Q

To get anterior guidance on the working side the rule to use is:

A

LUBL

41
Q

To eliminate protrusive interferences, the ___ rule is used

A

DUML

42
Q

My articulator is the

A

Denar Mark 320

43
Q

In a mark 320, the protrusive adjusts from ___ to ___ ˚ and the fixed Bennett is at ___˚

A

0-60˚

15˚

44
Q

Which is the bigger triangle

A

Bonwill (condyles to incisors) is bigger than Balkwill (2nd molars to incisors)

45
Q

Christensen - ___
Monson - ____
Hall - ___

A

Space
Denture
Conical

46
Q

Occlusal harmony is balance between what

A

Elevator and depressor muscles

47
Q

THA =

A

Terminal hinge axis

48
Q

What pulls the condylar head out of the socket

A

Lateral pterygoid

49
Q

5 functions of anterior teeth

A 
Anterior guidance
Initial mastication
Speech
Lip support
Esthetics
50
Q

Type pantograph does what

A

Records mandibular movements

51
Q

More HO requires ___ cusps while less allows ____ cusps

A

Shorter

Taller

52
Q

Significance of ear bow transfer

A

Relates maxillary cast to terminal hinge

Orients max. Cast correctly in space

Parallel to interpupillary line

Permits mounting of max cast

Mandibular cast can be mounted using CR

53
Q

Biting on something with anterior teeth is like a class. __ lever

A

3

54
Q

7 effects of tooth loss

A 
Supraeruption
Tilting
Loss of contact
Loss of posterior tooth support
Loss of vertical dimension
Flaring of anterior teeth
Non working interferences
55
Q

4 things that can be done for occlusal therapy

A

Selective grinding
Fixed pros
Orthodontic therapy
Orthgnathic surgery

56
Q

If a max tooth contacts in the third towards the fossa ___ is the treatment, in the middle third ___ is the treatment and in the cusp third ___ is the treatment

A

Selective grinding
Fixed pros
Orthodontic treatment

57
Q

5 things that influence treatment planning

A 
Symptoms
Condition of dentition
Systemic health
Esthetics
Finances
58
Q

Selective grinding needs to be done only in the

A

Enamel

59
Q

Grinding on closing: ___, ___ and ___

A

MUDL
BULL
LUBL

60
Q

Selective grinding on opening: ___, ___ and ___

A

BULL
LUBL
DUML

Occlusion (2 decks)

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