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Malocclusion Classification Flashcards
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1
Question
What is the primary purpose of classifying malocclusion?
Page 4
Answer
To describe and document a patient's occlusion
2
Question
How does malocclusion classification aid in population studies?
Page 4
Answer
Allows recording the prevalence of malocclusion within a population
3
Question
What role does malocclusion classification play in treatment assessment?
Page 4
Answer
Aids in assessing the need for orthodontic treatment
4
Question
How does malocclusion classification facilitate professional communication?
Page 4
Answer
Facilitates communication between orthodontists and general dentists
5
Question
What are the two main types of malocclusion classifications?
Page 5
Answer
Qualitative and Quantitative
6
Question
Name a qualitative classification of malocclusion.
Page 5
Answer
Angle Classification
7
Question
What is an example of a quantitative malocclusion classification?
Page 5
Answer
Index of Orthodontic Treatment Need (IOTN)
8
Question
What does the Peer Assessment Rating measure?
Page 5
Answer
Severity of malocclusion quantitatively
9
Question
In skeletal classification, what are the three planes of reference?
Page 6
Answer
Coronal, Transverse, Sagittal
10
Question
What skeletal dimension relates to front-back jaw alignment?
Page 6
Answer
Antero-posterior
11
Question
Which skeletal dimension concerns jaw height?
Page 6
Answer
Vertical
12
Question
What transverse skeletal issue involves a narrow upper jaw?
Page 11
Answer
Constricted Maxilla
13
Question
What is a broad mandible in transverse classification?
Page 11
Answer
Wide lower jaw relative to upper
14
Question
For skeletal Class I, what is the apical base relationship?
Page 7
Answer
Normal between maxillary and mandibular bases
15
Question
In skeletal Class I, how can apical bases relate to cranial base?
Page 7
Answer
Normal, protruded, or retruded
16
Question
What causes skeletal Class II malocclusion?
Page 8
Answer
Protruded maxillary base and/or retruded mandibular base
17
Question
What defines skeletal Class III antero-posteriorly?
Page 9
Answer
Retruded maxillary base and/or protruded mandibular base
18
Question
What is skeletal open bite in vertical classification?
Page 10
Answer
Excessive vertical separation of jaws
19
Question
What characterizes skeletal deep bite vertically?
Page 10
Answer
Excessive overlap of upper over lower teeth
20
Question
In transverse skeletal issues, what is a combination problem?
Page 11
Answer
Both maxilla and mandible discrepancies
21
Question
What is broad maxilla in transverse plane?
Page 11
Answer
Wide upper jaw relative to lower
22
Question
What is constricted mandible transversely?
Page 11
Answer
Narrow lower jaw
23
Question
What is the dental classification category for Angle's system?
Page 12
Answer
Dental
24
Question
What is the key assumption in Angle's classification?
Page 15
Answer
First permanent molars erupt into constant facial position
25
Question
Why is Angle's assumption considered wrong?
Page 15
Answer
Molars do not always erupt into constant position
26
Question
What defines Angle Class I molar relationship?
Page 16
Answer
Mesiobuccal cusp of upper first molar occludes with mesiobuccal groove of lower
27
Question
What percentage of malocclusions are Angle Class I?
Page 16
Answer
60 to 70%
28
Question
In Angle Class II, what is the lower arch position?
Page 17
Answer
Distal relation to upper arch
29
Question
What prevalence does Angle Class II have?
Page 17
Answer
25% of all malocclusion cases
30
Question
What defines Angle Class III molar relation?
Page 18
Answer
Lower dental arch in mesial relation to upper