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A method of measuring the apical base

H G Sergl1, W J Kerr, J H McColl

  • 1Department of Orthodontics, University of Mainz, Germany.

European Journal of Orthodontics
|October 1, 1996
PubMed
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Adults generally have smaller maxillary apical bases and larger mandibular apical bases than children across different malocclusion types. These findings highlight age-related differences in apical base dimensions for orthodontic treatment planning.

Area of Science:

  • Orthodontics and Dental Anthropology
  • Craniofacial Morphology Research

Background:

  • Understanding apical base dimensions is crucial for diagnosing and treating malocclusions.
  • Age-related changes in craniofacial structures influence treatment outcomes.

Purpose of the Study:

  • To compare maxillary and mandibular apical base areas between adult and child groups with Class II division 1, Class II division 2, and Class III malocclusions.
  • To analyze the relationship between maxillary and mandibular apical base sizes in different malocclusion types and age groups.

Main Methods:

  • Measurement of maxillary and mandibular apical base areas using a gnathograph on study casts.
  • Analysis of data from 156 adult and child participants with specific malocclusion types.
  • Application of logarithmic transformation and regression analysis to assess relationships.

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Main Results:

  • Significant differences in apical base areas were observed between age groups across all malocclusions.
  • Adults exhibited smaller maxillary apical base areas compared to children.
  • Adults generally had larger mandibular apical base areas than children, with an exception in Class II division 1 malocclusion.

Conclusions:

  • Age significantly influences maxillary and mandibular apical base dimensions in various malocclusion types.
  • The developed method offers insights into apical base discrepancies but requires further validation as a diagnostic tool.