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Related Experiment Video

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[Interrelation of tooth crown diameters].

T Iida1

  • 1First Department of Orthodontics, Faculty of Dentistry, Tokyo Medical and Dental University.

Kokubyo Gakkai Zasshi. the Journal of the Stomatological Society, Japan
|June 1, 1991
PubMed
Summary

Tooth crown diameters are strongly interconnected within and between jaws. Larger incisors and canines correlate with smaller premolars and molars, indicating a size-balancing effect in dentition.

Area of Science:

  • Dental Anatomy
  • Biostatistics
  • Orthodontics

Context:

  • Investigates the complex relationships between tooth dimensions.
  • Utilizes statistical analyses on a cohort of Japanese female orthodontic patients.
  • Examines mesiodistal diameters of permanent teeth, excluding third molars.

Purpose:

  • To statistically clarify the interrelation of tooth crown diameters.
  • To identify patterns in tooth size variation within the dentition.
  • To understand the correlation between different tooth types.

Summary:

  • Tooth crown diameters exhibit strong intercorrelations within each jaw and between both jaws.
  • A significant inverse relationship was observed: larger incisors/canines correlated with smaller premolars/molars, and vice versa.

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  • Teeth, excluding the upper lateral incisor, could be grouped by size (incisors, canines, premolars, molars), with smaller teeth associated with spaced dental arches.

    • Impact:

    • Provides insights into the developmental coordination of tooth sizes.
    • Contributes to a better understanding of dental arch form and tooth proportions.
    • Informs orthodontic diagnosis and treatment planning by highlighting predictable size relationships.