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Related Experiment Videos

Long-term reliability of semiadjustable articulator interchangeability.

R B Price1, W M Mansfield

  • 1Department of Dental Clinical Sciences, Faculty of Dentistry, Dalhousie University, Halifax, Canada. rbprice@is.dal.ca

Journal of Prosthodontics : Official Journal of the American College of Prosthodontists
|July 15, 2000
PubMed
Summary

Most Whip-Mix model #2240 articulators (83%) remained interchangeable after 1-6 years of clinical use, with minimal vertical discrepancies. This suggests the model #2240 articulator maintains interchangeability over time.

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Area of Science:

  • Dental Technology
  • Prosthodontics
  • Materials Science

Background:

  • Articulator interchangeability is crucial for accurate transfer of mounted casts in dental procedures.
  • Whip-Mix model #2240 articulators are widely used in clinical settings.

Purpose of the Study:

  • To evaluate the interchangeability of Whip-Mix model #2240 articulators after 1 to 6 years of clinical use.
  • To determine if these articulators maintain accuracy and reliability over time.

Main Methods:

  • Evaluated 46 Whip-Mix model #2240 articulators used clinically for 1-6 years.
  • Assessed horizontal interchangeability using the Whip-Mix #2245 check system (94-micron tolerance).
  • Measured vertical discrepancies using 26-micron shimstock at four locations.

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Main Results:

  • 83% (38 of 46) of articulators passed the interchangeability test (94-micron horizontal tolerance).
  • Most articulators exhibited vertical discrepancies of 26 microns or less.
  • Only 6.5% (3 of 46) showed vertical discrepancies greater than 52 microns.

Conclusions:

  • Whip-Mix model #2240 articulators largely maintain interchangeability within specified tolerances after extended clinical use.
  • The model #2240 articulator demonstrates potential for sustained interchangeability throughout its service life.
  • Clinical use for 1-6 years did not significantly compromise the interchangeability of most Whip-Mix #2240 articulators.