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Occlusion > Static Factors of Occlusion > Flashcards

Static Factors of Occlusion Flashcards

1
Q

What are three factors and forces that determine the tooth position?

A

Labiolingual alignment
mesiodistal alignment
Vertical position

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2
Q

Where the tooth erupts between the tongue and the cheek.

A

Neutral Zone

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3
Q

What two contacts maintain tooth position?

A

Interpoximal contacts and occlusal contacts

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4
Q

The relation of the teeth to each other within the dental arch

A

Intra-arch alignment

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5
Q

plane that curves to fit the occlusal surfaces and incisal edges of all the teeth

A

Plane of occlusion

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6
Q

Is the plane of occlusion concave or convex on the maxilla?

A

convex

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7
Q

Is the plane of occlusion concave or convex on the mandible?

A

concave

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8
Q

How are the anterior mandibular teeth angulated?

A

Labially (20 degrees)

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9
Q

How are the mandibular premolars angulated?

A

mesially (6 degrees)

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10
Q

How are the mandibular molars angulated?

A

mesially 10-15 degrees

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11
Q

How are the anterior Maxillary teeth angulated?

A

labially

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12
Q

How are the Maxillary premolars angulated?

A

mesially

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13
Q

How are the maxillar molars angulated?

A

mesially

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14
Q

Antero-posterior curvature of the occlusal plane.

Concave in the mandible and convex in the maxilla

A

CURVE OF SPREE

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15
Q

medio-lateral curvature of the occlusal plane

concave in the mandible and convex in the maxilla

A

Curve of wilson

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16
Q

loading of the posterior teeth over the long axis

A

axial loading

17
Q

When they occlude they are loaded axially,

designed to take heavy loads, support the occusal vertical dimension

A

net effect of angulation on the posterior teeth

18
Q

How does the anterior teeth protect the posterior teeth?

A

protects from mandibular excursions

19
Q

How do the posterior teeth protect the anterior teeth?

A

protects by taking the force of closure of the mandible

20
Q

the area defined by the cusp tips and the mesial and distal cusp ridges/ arms

A

occlusal table

this accounts for 50-60% of the buccolingual width of the tooth

21
Q

The relationship of the teeth in one arch to those in the other

A

inter-arch tooth alignment

22
Q

Which arch is wider max or man?

A

maxillary

23
Q

Which arch is longer?

A

maxillary

24
Q

Which cusp is functional on the maxillary posterior teeth?

A

lingual = functional

25
Q

Which cusp is functional on the mandibular posterior teeth?

A

buccal = functional

26
Q

What occurs when the functional cusps switch on the maxillary and mandibular arches?

A

posterior crossbite

27
Q

Where do functional cusps contact the other tooth?

A

the functional outer aspect

28
Q

imaginary line drawn through the buccal cusp tips of the mandibular teeth

A

buccal-occlusal line

29
Q

imaginary line drawn through the lingual cusp tips of the maxillary teeth

A

linguo-occlusal line

30
Q

imaginary line that follows the central grooves of and fossa of all the posterior teeth.

A

central fossa line

31
Q

bucco-occlusla line of the ______ occludes in the Central fossa line of the ______

A

mandible

Maxilla

32
Q

Linguo-occlusal line of the ______ occludes with the central fossa line of the _______.

A

maxilla

mandible

33
Q

The BO line of the maxilla occludes with the CF line of the mandible.

the LO line of the mandible occludes with the CF line of the maxilla

A

Crossbite

34
Q

Is the ideal occlusion from an orthodontic perspective

A

angles class 1

35
Q

The MB cusp of the maxillary first molar is aligned directly over the buccal groove of the mandibular first molar

A

angles class 1 relationship

36
Q

The MB cusp of the maxillary first molar is situated over the embrasure between the mandibular second premolar and first molar

A

angles class II

37
Q

The MB cusp of the maxillary first molar is situated over the embrasure between the mandibular first and second molar

A

Angles class III

38
Q

What are the two divisions of angles class II anterior occlusion

A

Division 1: the mandibular teeth contact the gingival third of the maxillary anterior teeth

Division 2: maxillary incisors are lingually inclined, laterals overlap the centrals labially

39
Q

Which of the following teeth have the greatest axial inclination relative to the occlusal plane?

A

Maxillary central incisors

Occlusion (13 decks)

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