Questions and Answers
Who is considered the father of modern orthodontics and was the first to classify malocclusion?
What is Class I or neutrocclusion?
The MB of the maxillary first molar occludes with the MB groove of the mandibular first molar.
What is the Class I canine relationship?
Maxillary canine occludes with the distal half of the mandibular canine and mesial half of the mandibular first premolar.
Describe Class II or distocclusion.
Signup and view all the answers
What characterizes Class II division 1?
Signup and view all the answers
What does retrognathic mean?
Signup and view all the answers
Describe Class II division 2.
Signup and view all the answers
What is the Class II molar relationship?
Signup and view all the answers
Define Class III mesioocclusion.
Signup and view all the answers
What is the Class III canine relationship?
Signup and view all the answers
What does prognathic refer to?
Signup and view all the answers
What is the definition of Class I?
Signup and view all the answers
What is the definition of Class II?
Signup and view all the answers
What is the definition of Class II division 1?
Signup and view all the answers
What is the definition of Class II division 2?
Signup and view all the answers
What is the definition of Class III figure?
Signup and view all the answers
What is true Class III malocclusion?
Signup and view all the answers
What is pseudo Class III?
Signup and view all the answers
Study Notes
Edward Angle
- Recognized as the father of modern orthodontics.
- First to classify malocclusion.
Class I or Neutrocclusion
- Maxillary first molar’s mesiobuccal (MB) cusp occludes with the MB groove of the mandibular first molar.
Class I Canine Relationship
- Maxillary canine occludes with the distal half of the mandibular canine and the mesial half of the mandibular first premolar.
Class II or Distocclusion
- Maxillary first molar is positioned even with or posterior to the mandibular first molar.
- Buccal surface of the mandibular first molar is distal to the mesiobuccal cusp of the maxillary first molar.
Class II Division 1
- Follows Class II molar relationships.
- Permanent maxillary central incisors are slightly protruded.
- Characterized by a large overjet.
Retrognathic
- Indicates a convex facial profile.
- Results from a smaller mandible or a larger maxilla.
Class II Division 2
- Molar relationships are classified as Class II.
- Maxillary central incisors are retroclined.
- May show proclined maxillary lateral incisors and deep bite.
Class II Molar Relationship
- Mesiobuccal (MB) cusp of the maxillary first molar occludes with the mandibular first molar.
Class III Mesioocclusion
- Mesiobuccal cusp of the maxillary first permanent molar occludes distally to the mesiobuccal groove of the mandibular first molar.
Class III Canine Relationship
- Distal surfaces of the mandibular canines are mesial to the mesial surface of the maxillary canines by at least the width of a premolar.
- Mandibular incisors exhibit complete crossbite.
Prognathic
- Describes a concave facial profile with a prominent mandible.
- Typically associated with Class III malocclusion.
Class I
- Represents the ideal occlusion relationship.
Class II
- A general classification indicating a discrepancy where the maxilla is positioned more anteriorly than the mandible.
Class II Division 1
- Permanent maxillary central incisors are protruded, often featuring a significant overjet.
Class II Division 2
- Maxillary incisors are retroclined with potential for deep bite.
Class III Figure
- Diagrammatic representation related to Class III relationships.
True Class III Malocclusion
- A skeletal type of malocclusion.
- Results from genetic factors, often involving an excessively large mandible or a smaller maxilla.
Pseudo Class III
- A false or postural classification.
- Occurs due to an anterior shift of the mandible during closure, often from premature contact of incisors or canines.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on Edward Angle's classification of malocclusion with these flashcards. Understand the key terminologies such as Class I or neutrocclusion and learn about canine relationships. Perfect for orthodontic students and professionals alike.
