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Dentofacial changes in untreated Class II division 1 subjects.

N E Carter1

  • 1Institute of Dental Surgery, Eastman Dental Hospital, London.

British Journal of Orthodontics
|November 1, 1987
PubMed
Summary

This study analyzed cephalometric data from 30 individuals with Class II Division 1 malocclusions. Males exhibited greater increases in linear measurements and different mandibular growth patterns compared to females.

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Area of Science:

  • Orthodontics
  • Craniofacial Growth
  • Dental Morphology

Background:

  • Class II Division 1 malocclusion is a common orthodontic concern.
  • Understanding craniofacial growth patterns is crucial for effective treatment planning.
  • Cephalometric analysis provides quantitative data on skeletal and dental relationships.

Purpose of the Study:

  • To present basic descriptive cephalometric data for untreated Class II Division 1 malocclusions.
  • To compare bony and dentoalveolar parameters between male and female subjects.
  • To analyze growth changes over time in this malocclusion group.

Main Methods:

  • Cephalometric analysis of lateral cephalographs from 30 individuals (15 males, 15 females).
  • Two radiographs per subject taken during adolescence (mean ages 12 and 17).
  • Calculation and comparison of 38 bony and dentoalveolar parameters between sexes.

Main Results:

  • A mild skeletal II pattern with mild mandibular retrognathism was observed on average.
  • Males showed significantly greater increases in many linear measurements compared to females.
  • Females exhibited a more pronounced downward and backward mandibular growth rotation than males.

Conclusions:

  • Significant sex differences exist in craniofacial growth patterns within Class II Division 1 malocclusions.
  • These findings highlight the importance of considering sex-specific growth in orthodontic treatment.
  • Cephalometric data provides valuable insights into the progression of this malocclusion during adolescence.

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