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The patient-specific anatomical articulator.

Shereen S Azer1, Evan Kemper2

  • 1Associate Professor and Vice Chair, Division of Restorative and Prosthetic Dentistry, The Ohio State University College of Dentistry, Columbus, Ohio.

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|April 5, 2021
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Summary

This study introduces a novel patient-specific anatomical articulator, utilizing 3D printing and cone beam computed tomography (CBCT) data. This innovative device accurately simulates mandibular movements, reducing errors and improving precision in prosthodontic treatments.

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Area of Science:

  • Dental Technology
  • Biomedical Engineering
  • Prosthodontics

Background:

  • Conventional dental articulators have limitations in accurately reproducing complex human mandibular movements.
  • Existing mounting procedures are technique-sensitive, leading to potential errors in articulator settings and reduced treatment accuracy.
  • There is a need for advanced devices that offer patient-specific simulation for improved prosthodontic outcomes.

Purpose of the Study:

  • To describe an innovative, patient-specific anatomical articulator designed for accurate simulation of human mandibular movements.
  • To present a method that eliminates technique-sensitive mounting procedures, thereby reducing potential errors.
  • To highlight the advantages of a custom anatomical articulator over conventional devices and pantographic tracings.

Main Methods:

  • Utilizing three-dimensional (3D) printing technology with patient cone beam computed tomography (CBCT) data.
  • Creating 3D replicas of condylar fossae and condyles at the correct intercondylar distance.
  • Printing the maxilla in its correct spatial relationship to condylar complexes and the Frankfort horizontal plane (FHP), then premounting onto a modified articulator frame.

Main Results:

  • The developed device functions as a true patient-specific anatomical articulator, accurately simulating individual anatomy.
  • Elimination of technique-sensitive mounting procedures significantly diminishes potential errors in mounting and articulator settings.
  • The custom anatomical articulator provides greater precision than pantographic tracing, mimicking patient-specific anatomical movements.

Conclusions:

  • The novel custom anatomical articulator offers a more precise and reliable method for simulating mandibular movements compared to existing technologies.
  • This patient-specific device streamlines complex prosthodontic treatment by saving time, money, and effort, while minimizing mounting errors.
  • The integration of 3D printing and CBCT data enables the creation of a fully adjustable, anatomically accurate articulator.