Deck 20: Occlusion

Question 1

Overbite is measured in millimeters with the:

A) blunt end of an instrument.
B) periodontal probe.
C) explorer.
D) dental mirror.

Answer 1

periodontal probe.

Question 2

Which of the following is (are) not considered part of the three areas of centric contacts or centric stops?

A) Height of contour
B) Marginal ridges
C) Central fossae
D) Occlusal pits

Answer 2

Occlusal pits

Question 3

Which Angle classification of malocclusion in the permanent dentition is characterized by the mesiobuccal cusp of the maxillary first molar occluding mesial to the mesiobuccal groove of the mandibular first molar,as well as having the maxillary anterior teeth protrude facially from the mandibular anterior teeth?

A) Class I
B) Class II, division I
C) Class II, division II
D) Class III

Answer 3

Class II, division I

Question 4

Which of the following is not considered the ideal molar relationship within the primary dentition?

A) Distal step
B) Mesial step
C) End to end
D) Flush terminal plane

Question 5

Which of the following statements is considered correct when discussing overbite?

A) Equally distributed among women and men
B) Noted more often in women than men
C) Associated with particular craniofacial patterns
D) Increases with age due to incisal wear

Question 6

Which of the following terms is the end point of closure of the mandible?

A) Lateral occlusion
B) Centric occlusion
C) Centric relation
D) Group function

Question 7

Which of the following is usually related to related to lack of an overall ideal form in the permanent dentition while in centric occlusion?

A) Occlusal trauma
B) Malocclusion
C) Centric relation
D) Flush terminal plane

Question 8

Lateral deviation of the mandible,or lateral excursion,is evaluated by shifting the lower jaw:

A) forward.
B) backward.
C) upward.
D) side to side.

Question 9

Which of the following is considered the final phases of arch development and consists of the eruption of the third molars?

A) Phase two
B) Phase three
C) Phase four
D) Phase five

Question 10

Which of the following statements concerning dental curvatures within the permanent dentition is considered correct?

A) The anteroposterior curvature is called the curve of Wilson.
B) The curve of Wilson is especially evident when viewing the posterior teeth from the lingual view.
C) The anteroposterior curvature is called the curve of Spee.
D) The curve of Spee is especially evident when viewing the posterior teeth from the lingual view.

Question 11

Which Angle classification of malocclusion in the permanent dentition is characterized by the mesiobuccal cusp of the maxillary first molar occluding distal to the mesiobuccal groove of the mandibular first molar?

A) Class I
B) Class II, division I
C) Class II, division II
D) Class III

Question 12

Which Angle classification of malocclusion in the permanent dentition is characterized by an ideal mesiodistal relationship of the jaws and dental arches?

A) Class I
B) Class II, division I
C) Class II, division II
D) Class III

Question 13

Open contacts allow for areas of food impaction from opposing cusps called _____ cusps,which can result in trauma to the interdental gingiva.

A) plunging
B) supernumerary
C) supporting
D) talon

Question 14

When the teeth normally occlude in centric occlusion,the maxillary arch horizontally overlaps the mandibular arch to a condition referred to as:

A) overbite.
B) crossbite.
C) overjet.
D) underbite.

Question 15

How would the maxillary incisors be described within a permanent dentition case of a Class III using the Angle classification of malocclusion?

A) Flared mesially
B) Complete crossbite
C) Inclined labially
D) Protrude facially

Question 16

Which of the following teeth of both arches should be in contact during protrusive occlusion within the permanent dentition?

A) Central and lateral incisors
B) Canines
C) Premolars
D) First molars

Question 17

Which Angle classification of malocclusion in the permanent dentition is characterized by the mesiobuccal cusp of the maxillary first molar occluding mesial to the mesiobuccal groove of the mandibular first molar,as well as having the maxillary central incisors either upright or retruded?

A) Class I
B) Class II, division I
C) Class II, division II
D) Class III

Question 18

When does phase one of arch development occur for the permanent dentition?

A) Permanent first molars erupt
B) Permanent anterior teeth erupt
C) Permanent premolars erupt
D) Permanent canines erupt

Question 19

Which of the following is considered the voluntary position of the dentition that allows the maximum contact when the teeth occlude?

A) Lateral occlusion
B) Centric occlusion
C) Centric relation
D) Group function

Question 20

What is the estimated percentage of children and teenagers that show some degree of malocclusion?

A) 15%
B) 40%
C) 50%
D) 80%

Question 21

Which type of bite is characterized by having anterior teeth that do not occlude?

A) Open bite
B) End-to-end bite
C) Anterior crossbite
D) Posterior crossbite

Question 22

Which profile is present with a Class II malocclusion,division II,in a permanent dentition?

A) Prognathic
B) Mesognathic
C) Retrognathic
D) Mesognathic or retrognathic

Question 23

Which profile is present with a Class II malocclusion,division I,in a permanent dentition?

A) Prognathic
B) Mesognathic
C) Retrognathic
D) Mesognathic or retrognathic

Question 24

Which profile is present with a Class III malocclusion in a permanent dentition?

A) Prognathic
B) Mesognathic
C) Retrognathic
D) Mesognathic or retrognathic

Question 25

Which type of bite is characterized by having anterior teeth occlude but without the maxillary teeth overlapping the mandibular teeth?

A) Open bite
B) End-to-end bite
C) Anterior crossbite
D) Posterior crossbite