Occlusion Flashcards

1
Q

Any tooth structure that interferes with the arc of closure has the primary effect of displacing the mandible … producing an…

A
  • forward

- anterior slide

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2
Q

Line of closure interferences are those primary interferences that cause the madible to deviate… from the initial contact point (CO) to MI

A

right or left

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3
Q

If an interfereing incline causes the mandible to deviat toward the cheek, the grinding rule is

A

BULL

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4
Q

If an interfering incline causes the mandible to move toward the tongue, the grinding rule is

A

LUBL

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5
Q

The vertical dimension of occlusion (VDO) after equilibration at CR should… before adjustment

A

remain the same as

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6
Q

If forces that deviate mandible forward are eliminated, a… will be provided automatically

A

long centric

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7
Q

Lateral interferences (on opening) can be divided into 2 types

A

working side and non working side

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8
Q

Non working interferences grinding rule is… But as non working inclines are relivede , working may start to interfere so…

A

BULL

-usually both are adjusted together

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9
Q

Before adjustment of the excursions on the working side, it is necessary to determine the type of occlusion that would be best for the patient- … or…

A

group function

anterior guidance

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10
Q

patients with a large horizontal overlap benefit more from a… in working side excursions

A

group function

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11
Q

The basic rule for equilibriating working side is…

A

LUBL

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12
Q

the rule for eliminating protrusive interferences is

A

DUML

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13
Q

posterior determinants of mandibular movements (3)

A
  1. inclination of articular eminence
  2. medial wall of glenoid fossa
  3. intercondylar distance
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14
Q

Anterior determinants of mandibular movements

A
  1. horizontal overlap of ant teeth

2. vertical overlap of ant teeth

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15
Q

Other determinants of mandibular movements

A
  1. occlusal plane
  2. curve of spee
  3. neuromuscular response
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16
Q

class 1 is when the MB cusp of max 1st molar is centered on … of…

A

MB or buccal groove of mand 1st molar

17
Q

class 2 is malocclusion where mandibular arch is… to max arch

A

posterior (overbite)

18
Q

class 3 is malocclusion in which mandibular arch is… to max 1st molar

A

mesial (underbite)

19
Q

… is the angle between sagittal plane and average path of nonworking condyle as viewed in transverse plane during lateral movement (fixed at 15 degrees in our articulators)

A

bennets

20
Q

… is bilateral, simultaneous anterior and posterior occlusal contact of teeth in centric and eccentric positions, characteristic of heavily worn natural teeth and complete denture design

A

balanced articulation

21
Q

… is mechanical form located on the upper-posterior region of an articulator that controls movement of its mobile member. This movement is intended to stimulate that produced by condyles in TMJ

A

condylar guidance

22
Q

… is the path traveled by mandibular condyle in TMJ during mandibular movements

A

condylar path

23
Q

… is an occlusal scheme in which the posterior teeth prevent excessive contact of the anterior teeth in MI and the anterior teeth disengage posterior teeth in all mandibular excursive movements

A

mutually protected articulation

24
Q

… is an occlusion which exists in the absence of signs and symptoms of occlusion-related pathosis. Acceptability of occlusal variation and a sense of psychological and physical patient confor are implied

A

physiologic occlusion

25
Q

… is malocclusion in which the mandibular teeth are located facial to ideal occlusal relationship with the opposing maxillary teeth when all are maximally occluded. it could involve entire mouth , specific segments, or one tooth

A

reverse articulation (crossbite)

26
Q

… i simultaneous contact of most teeth on working side but no contact on nonworking side

A

unilateral balanced occlusion (group function)

27
Q

Optimal … and…is when teeth have contact along CR, that contact if even across all teeth and force is well distributed (CO=MI)

A

arc of closure

line of closure

28
Q

A non optimal arc of closure results in an… Grinding of will correct

A

anterior slide

MUDL

29
Q

A non optimal line of closure results in a… A grinding of… will correct is deviation is toward cheek. A grinding of… will correct deviation toward tongue

A

deviation to left or right
BULL
LUBL