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Dental Anatomy > Dental Occlusion > Flashcards

Dental Occlusion Flashcards

1
Q

What is the horizontal overlap of maxillary incisors in relation to mandibular incisors?

A

Overjet

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2
Q

What is the Vertical distance by which the maxillary incisors overlap the mandibular incisors?

A

Overbite

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3
Q

How are maxillary posterior teeth positioned in centric occlusion?

A
  • maxillary posterior teeth are slightly buccal to mandibular posterior teeth
  • Maxillary posterior teeth are located slightly distal to mandibular teeth
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4
Q

Where do the lingual cusps of maxillary posterior teeth rest in centric occlusion?

A

The lingual cusps of max. posterior teeth rest in the occlusal fossae of mandibular teeth

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5
Q

Where do the Buccal cusps of the mandibular posterior teeth rest in centric occlusion?

A

Buccal cusps of mandibular teeth rest in the Occlusal fossae of max teeth in centric occlusion

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6
Q

Are the buccal cusps of maxillary posterior teeth buccal or lingual to those in the mandibular arch in Centric Occlusion?

A

the buccal cusps of max. posterior teeth are BUCCAL to those in the mandibular arch

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7
Q

What is Angle’s Classification?

A

the classification of occlusion and malocclusion based on the relationship of the maxillary 1st molar to mandibular teeth

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8
Q

What facial profile corresponds to Angle’s Class II Occlusion?

A

Retrognathic

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9
Q

What Facial profile corresponds to Angle’s Class III Occlusion?

A

Prognathic

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10
Q

What is the Molar Occlusion in a Class I occlusion?

A

“Neutroclusion” the ideal relationship btwn the dental arches
-MB cusp of max. 1st molar occludes with MB groove of mandibular 1st molar

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11
Q

The MB cusp of the maxillary 1st molar occludes with the MB groove the mandibular 1st molar is what type of Angle’s classification?

A

Class 1 molar occlusion

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12
Q

What class of molar occlusion is characterized by Distocclusion?

A

Class II molar occlusion

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13
Q

What is Distocclusion?

A

the MB cusp of the maxillary 1st molar occludes mesially to the MB groove of the mandibular 1st molar
-referring to the mandibular teeth being more Distal to the maxillary teeth than ideal

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14
Q

What term is generally used to describe Class II occlusion?

A

Overbite

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15
Q

Class II, Division 1 occlusion is characterized by what?

A

Deep overbite; maxillary anteriors Protrude facially from the mandibular anteriors
-Labioversion of maxillary incisors
Chin Retrudes (retrognathic profile)

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16
Q

What is a Class II, Division 2 occlusion?

A

maxillary Central incisors are Upright or retruded, and Lateral incisors are tipped labially or overlap the central incisors

  • linguoversion (lingually tilted) of maxillary incisors
  • Mesognathic (orthognathic) profile
17
Q

What class of Molar occlusion is characterized by Mesiocclusion?

A

Class III molar occlusion

18
Q

What is Mesiocclusion?

A

the MB cusp of the maxillary 1st molar occludes distal to the MB groove of the mandibular 1st molar

  • so the MB groove of the mand. 1st molar is mesial to the MB cusp of the max 1st molar; mesiocclusion refers to mandibular tooth position
  • Chin Protrudes
  • Underbite
19
Q

What Class of occlusion is an Underbite?

A

Class III

20
Q

When The MB cusp of the maxillary 1st molar occludes distal to the MB groove of the mandibular 1st molar it is a a Class ____ molar occlusion?

A

Class III

21
Q

What is the canine relationship in a Class I occlusal classification?

A

the maxillary canine occludes w/ the distal half of the mandibular canine and the mesial half of the mandibular 1st premolar

22
Q

The distal surface of mandibular canine is distal to the mesial surface of the max. canine (by at least the width of a premolar) in what occlusal class?

A

Class II

23
Q

When the distal surface of the mandibular canine is mesial to the mesial surface of the maxillary canine it is a Class ___ occlusion

A

Class III

24
Q

What is it called when one or more mandibular teeth are facial to their maxillary components (can be anterior, posterior, or both)?

A

Crossbite

25
Q

What is the Curve of Spee?

A

anteroposterior curve

26
Q

What is the Curve of Wilson?

A

Lateral curve

27
Q

What are the Supporting/Functional Cusps?

A

Lingual cusps of maxillary teeth

Buccal cusps of mandibular teeth

28
Q

What are the 3 mandibular movements?

A

Elevation and Depression
Lateral excursions
Protrusive: mandible moves forward

29
Q

What is the Working side?

A

the side to which the mandible moves during lateral excursions

30
Q

What is the Non-working side?

A

opposite side from which the mandible is moving during lateral excursions (aka Balancing Side)

31
Q

What is Canine Guidance and what mandible movements is it involved in?

A

In lateral and protrusive movements of the mandible

canines and anterior teeth provide discussion of the posterior teeth

32
Q

What type of caries affect the proximal surfaces of molars and premolars (posterior teeth)?

A

Class II: proximal surfaces, posterior teeth

33
Q

What type of caries affect the proximal surfaces of anterior teeth (centrals, laterals, and cuspids)?

A

Class III: proximal surfaces, anterior teeth

34
Q

What class of caries are one surface cavities beginning in the pits and fissures that occurs in: occlusal or premolars and molars, buccal or lingual surfaces of molars, or the palatal of anterior teeth?

A

Class I: one surface restorations

35
Q

What class of caries involves the proximal surfaces of incisors and canines and extends into the incisal angle?

A

Class IV

36
Q

Caries that occur on the gingival 1/3 of the buccal or lingual surfaces of anterior and posterior teeth are a Class ___

A

Class V

37
Q

What class of caries involves the cusp tips of molars, premolars and cuspids?

A

Class VI

38
Q

What is the optimal position of the condyles of the temporomandibular joint in centric occlusion?

A

the most posterior, unstrained position in the glenoid fossa

39
Q

What is Centric Occlusion?

A

the relationship when the jaw is closed in a position that produces maximum stable contact between the occluding surfaces of the max and mand. teeth

  • maximizes the masticatory function of teeth
  • widely distributes occlusal load

Dental Anatomy (3 decks)

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