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Defining centric relation.

Jonathan P Wiens1, Gary R Goldstein2, Mark Andrawis3

  • 1Clinical Professor, Department of Restorative Dentistry, University of Detroit Mercy School of Dentistry, Detroit, Mich.

The Journal of Prosthetic Dentistry
|March 13, 2018
PubMed
Summary
This summary is machine-generated.

Centric relation (CR) definitions vary, but a survey found consensus on CR being a repeatable, physiologic spatial relationship, independent of tooth contact. Further research is needed for attributes with disagreement.

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Area of Science:

  • Dental occlusion
  • Prosthodontics
  • Temporomandibular joint (TMJ) function

Background:

  • Multiple definitions of centric relation (CR) have caused confusion.
  • Previous attempts to unify the definition of CR lacked consensus among prosthodontists.

Purpose of the Study:

  • To identify areas of agreement and disagreement among Academy of Prosthodontics (AP) members regarding existing CR definitions.
  • To clarify attributes of CR for a more unified understanding.

Main Methods:

  • A survey of AP members was conducted using email and postal mail.
  • The CR Attributes Survey evaluated 5 domains: spatial relationship, condylar position, articular disks, mandibular movement, and recording.
  • Participants used agree-uncertain-disagree assessments for each attribute.

Main Results:

  • A 68.5% response rate was achieved from 146 AP fellows.
  • Strong agreement was found for CR as a repeatable, physiologic spatial relationship, independent of tooth contact.
  • Disagreement and uncertainty were noted regarding disk position and the influence of TMJ dysfunction on recording CR.

Conclusions:

  • The survey identified attributes with majority consensus for defining CR.
  • Attributes with disagreement or uncertainty require further research and reassessment.
  • Clarifying CR definitions can improve understanding and clinical application in prosthodontics.