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Dewey's Modification for Angle's Class I Malocclusion: Revisited.

Nishu Agarwal1, Pallavi Daigavane1, O P Kharbanda2

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Area of Science:

  • Dentistry
  • Orthodontics
  • Dental Classification Systems

Background:

  • Dental classification systems are vital for communication and patient management.
  • Angle's classification, modified by Dewey, is widely used by orthodontists.
  • Existing literature has not addressed the shortcomings of Dewey's modification.

Purpose of the Study:

  • To re-evaluate and re-establish Dewey's modification for class I malocclusion.
  • To incorporate malocclusions not currently included in the classification system.

Main Methods:

  • An observational study conducted over eight months.
  • Involved 600 patients from an Orthodontics Department.
  • Photographic and clinical evaluation methods were used to assess malocclusions.

Main Results:

  • Other malocclusion types beyond Dewey's modification were observed.
  • Prevalence: single tooth crossbite (4%), multiple tooth crossbite (5%), single tooth scissor bite (1%), multiple tooth scissor bite (2%), single tooth rotations (9%), multiple tooth rotations (6%).
  • A significant 35% of the population exhibited other malocclusion types.

Conclusions:

  • The study identified various malocclusions not covered by Dewey's modification.
  • A significant lacuna exists in the current classification system.
  • Revisiting and expanding the classification system is necessary.