Static Factors of Occlusion

Question 1

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

Answer 1

Labiolingual alignment
mesiodistal alignment
Vertical position

Question 2

Where the tooth erupts between the tongue and the cheek.

Answer 2

Neutral Zone

Question 3

What two contacts maintain tooth position?

Answer 3

Interpoximal contacts and occlusal contacts

Question 4

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

Answer 4

Intra-arch alignment

Question 5

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

Answer 5

Plane of occlusion

Question 6

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

Answer 6

convex

Question 7

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

Answer 7

concave

Question 8

How are the anterior mandibular teeth angulated?

Answer 8

Labially (20 degrees)

Question 9

How are the mandibular premolars angulated?

Answer 9

mesially (6 degrees)

Question 10

How are the mandibular molars angulated?

Answer 10

mesially 10-15 degrees

Question 11

How are the anterior Maxillary teeth angulated?

Answer 11

labially

Question 12

How are the Maxillary premolars angulated?

Answer 12

mesially

Question 13

How are the maxillar molars angulated?

Answer 13

mesially

Question 14

Antero-posterior curvature of the occlusal plane.

Concave in the mandible and convex in the maxilla

Answer 14

CURVE OF SPREE

Question 15

medio-lateral curvature of the occlusal plane

concave in the mandible and convex in the maxilla

Answer 15

Curve of wilson

Question 16

loading of the posterior teeth over the long axis

Answer 16

axial loading

Question 17

When they occlude they are loaded axially,

designed to take heavy loads, support the occusal vertical dimension

Answer 17

net effect of angulation on the posterior teeth

Question 18

How does the anterior teeth protect the posterior teeth?

Answer 18

protects from mandibular excursions

Question 19

How do the posterior teeth protect the anterior teeth?

Answer 19

protects by taking the force of closure of the mandible

Question 20

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

Answer 20

occlusal table

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

Question 21

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

Answer 21

inter-arch tooth alignment

Question 22

Which arch is wider max or man?

Answer 22

maxillary

Question 23

Which arch is longer?

Answer 23

maxillary

Question 24

Which cusp is functional on the maxillary posterior teeth?

Answer 24

lingual = functional

Question 25

Which cusp is functional on the mandibular posterior teeth?

Answer 25

buccal = functional

Question 26

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

Answer 26

posterior crossbite

Question 27

Where do functional cusps contact the other tooth?

Answer 27

the functional outer aspect

Question 28

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

Answer 28

buccal-occlusal line

Question 29

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

Answer 29

linguo-occlusal line

Question 30

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

Answer 30

central fossa line

Question 31

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

Answer 31

mandible Maxilla

Question 32

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

Answer 32

maxilla mandible

Question 33

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

Answer 33

Crossbite

Question 34

Is the ideal occlusion from an orthodontic perspective

Answer 34

angles class 1

Question 35

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

Answer 35

angles class 1 relationship

Question 36

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

Answer 36

angles class II

Question 37

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

Answer 37

Angles class III

Question 38

What are the two divisions of angles class II anterior occlusion

Answer 38

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

Question 39

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

Answer 39

Maxillary central incisors