Classification of articulators

By Dr. Vishaal Bhat on Friday 6 June 2008 with 0 comments



  1. class I: simple holding instrument

  • subdivision A: vertical motion possible (verticulator)
  • subdivision B: vertical motion is joint related, hinge action
  1. class II: horizontal as well as vertical motion/does not orient the motion to the TMJ

  • subdivision A: eccentric motion unrelated to patient motion---it’s arbitrary
  • subdivision B: based on Monson’s spherical theory
  • subdivision C: eccentric motion determined by engraving methods
  1. class III: simulates condylar pathways

  • uses averages or mechanical equivalents for all or part of motion
  • accepts a facebow transfer
  • could be arcon or condylar
  • subdivision A: accepts static protrusive positional record
  • subdivision B: accepts static lateral protrusive records
  1. class IV:

  • accepts 3-D dynamic records

  • accepts hinge axis facebow transfer

  • subdivision A: condylar paths are formed by patient engravings

  • subdivision B: condylar paths are angled or modified with inserts and can be programmed with use of a “pantograph”

Category: Prosthodontics Notes

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