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Orthodontics 2 > Classification Of Malocclusion > Flashcards

Classification Of Malocclusion Flashcards

1
Q

What are the purpose of classification?

A
  1. Grouping various malocclusion
  2. Diagnosis
  3. Treatment planning
  4. Comparison
  5. Visualizing and understanding the problem assoc
  6. Communication
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2
Q

Common mistake in classification

A

Trying to label the case immediately

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3
Q

History on the concept of occlusion

A

Fictional period
Hypothetical period
Factual period

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4
Q

What are the keys of normal occlusion ?

A
  1. Molar relationship
  2. Crown angulation
  3. Crown inclination
  4. Absence of rotation
  5. Tight contact
  6. Curve of Spee
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5
Q

It is any deviation from the ideal occlusion

A

Malocclusion

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6
Q

Types of malocclusion

A

Dental dysplasia

Skeletodental dysplasia

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7
Q

It is the type or group of malocclusion where there is a lack of space to accomodate teeth, or caused by local factors and hereditary

A

Dental dysplasia

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8
Q

There is an abnormal relationship between jaws, the muscles function is not normal

A

Skeletodental dysplasia

Tx is diff from dental dysplasia

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9
Q

Who classified malocclusion?

A

Edward H. Angle

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10
Q

What are the Angle’s classification of malocclusion ?

A

Class I - neutrocclusion
Class II - Distocclusion
Class III- Mesiocclusion

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11
Q

mb cusp (max 1st molar) occludes mb groove (man 1st molar)

A

Class I

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12
Q

Anteroposterior relationship of both 1st molars are correct

A

Class I

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13
Q

Class I malocclusion is

A. Dental dysplasia
B. Skeletodental dysplasia

A

A. Dental dysplasia

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14
Q

Rotation, individual malpositions, missing, size discrepancies of teeth

A

Class I

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15
Q

Db cusp (max 1st molar) falls into db groove (man 1st molar)

A

Class II

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16
Q

Excessive overbite and overjet
Upper dental arch - v shaped (protrusion and labioversion of incisors)
Assoc with abnormal muscle function of lips

A

Class II, division 1

17
Q

Exaggerated curve of Spee
Supraversion of man central incisor
Excessive lingual inclination of the max central incisor
Excessive labioversion of max lateral incisor

A

Class 2, division 2

18
Q

Mesial groove of man 1st molar articulates anteriorly with mb cusp of max 1st molar
Mandibular prognathism
Negative overbite and overjet

A

Class III

Orthodontics 2 (3 decks)

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