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Recording condylar movement with two facebow systems

S T Hicks1, D P Wood

  • 1Division of Graduate Orthodontics, Faculty of Dentistry, University of Western Ontario, London, Canada.

The Angle Orthodontist
|January 1, 1996
PubMed
Summary
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This study compared SAM and Panadent articulator systems for recording maxillomandibular relationships. While both systems showed no significant differences in condylar discrepancy recording, the SAM facebow is not interchangeable with the Panadent articulator.

Area of Science:

  • Dental occlusion
  • Orthodontic diagnosis and treatment planning

Background:

  • Articulator systems are crucial for accurately recording maxillomandibular relationships in orthodontics.
  • Understanding condylar discrepancies and movements is vital for effective treatment planning.

Purpose of the Study:

  • To compare SAM and Panadent articulator systems for condylar discrepancy recording.
  • To assess the interchangeability of the SAM facebow with the Panadent articulator.
  • To evaluate condylar movement direction between centric relation (CR) and centric occlusion (CO).

Main Methods:

  • Collected impressions, bite registrations (CO and CR), and facebow recordings from 37 patients using both SAM and Panadent systems.
  • Statistically analyzed differences between the two articulator systems.

Related Experiment Videos

  • Evaluated condylar movement patterns during jaw closure.

    • Main Results:

    • No statistically significant differences were found between the SAM and Panadent articulator systems in recording condylar discrepancies (p > 0.05).
    • The SAM facebow is not interchangeable when mounting to the Panadent articulator.
    • Condylar movement typically occurs downward and backward from CR to CO.

    Conclusions:

    • Both SAM and Panadent articulator systems are comparable for recording condylar discrepancies.
    • Clinicians should avoid using the SAM facebow with the Panadent articulator due to interchangeability issues.
    • Condylar behavior during jaw closure from centric relation to centric occlusion is generally predictable.