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Related Experiment Videos

Comparison of condylar control settings using three methods: a bench study.

L B Pelletier1, S D Campbell

  • 1Department of Prosthetic Dentistry, Harvard School of Dental Medicine, Boston, Mass.

The Journal of Prosthetic Dentistry
|August 1, 1991
PubMed
Summary

Accurate programming of eccentric condylar pathways using electronic pantography minimizes dental prosthesis adjustments. This study ranked methods for recording mandibular Bennett shift and protrusive pathways, finding electronic pantography superior.

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Area of Science:

  • Dental Prosthetics
  • Biomechanics
  • Occlusion

Background:

  • Articulators programmed with eccentric condylar pathways simplify occlusal adjustments in dental prostheses.
  • Accurate recording of mandibular movements, including Bennett shift and protrusive pathways, is crucial for effective prosthetic fabrication.

Purpose of the Study:

  • To compare the accuracy of different methods for recording the immediate Bennett shift and the protrusive condylar path of the mandible.
  • To rank the effectiveness of various recording techniques, including electronic pantography, mechanical pantography, and simplified mandibular motion analyzers.

Main Methods:

  • A bench study design was employed, controlling variables to isolate the performance of different recording methods.
  • Methods evaluated for protrusive excursions: electronic pantography (Denar), mechanical pantography (Denar), and simplified mandibular motion analyzers (Whip-Mix and Denar).

Related Experiment Videos

  • Methods evaluated for immediate side shift: electronic pantograph, polyether interocclusal records, mechanical pantography (Denar)/simplified mandibular motion analyzer (Panadent), simplified mandibular motion analyzers (Whip-Mix and Denar), and zinc oxide interocclusal records.

    • Main Results:

    • For protrusive excursions, the ranking from best to worst was: electronic pantography, mechanical pantography, and simplified mandibular motion analyzers.
    • For immediate side shift, the ranking from best to worst was: electronic pantograph, polyether interocclusal records, mechanical pantography/simplified mandibular motion analyzer (Panadent), simplified mandibular motion analyzers (Whip-Mix and Denar), and zinc oxide interocclusal records.

    Conclusions:

    • Electronic pantography is the most accurate method for recording both protrusive excursions and immediate Bennett shift.
    • Simplified mandibular motion analyzers and interocclusal records show varying degrees of accuracy, with electronic pantography consistently outperforming them.