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Related Experiment Videos

Does articulating study casts make a difference to treatment planning?

P E Ellis1, P E Benson

  • 1Charles Clifford Dental Hospital, Sheffield, UK. pamela@ellisteeth.demon.co.uk

Journal of Orthodontics
|March 20, 2003
PubMed
Summary
This summary is machine-generated.

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Articulating orthodontic casts in centric relation (CR) versus intercuspal position (ICP) did not significantly alter treatment planning decisions for most cases. Routine articulation is not supported, though specific malocclusions may benefit from further study.

Area of Science:

  • Orthodontics
  • Dental Occlusion
  • Treatment Planning

Background:

  • Accurate diagnosis and treatment planning are crucial in orthodontics.
  • The position of the mandible, specifically centric relation (CR) versus intercuspal position (ICP), can influence treatment decisions.
  • Assessing the impact of cast articulation on these decisions is important for clinical practice.

Purpose of the Study:

  • To evaluate if articulating dental casts in centric relation (CR) compared to intercuspal position (ICP) influences orthodontic treatment planning.
  • To determine the reliability of treatment decisions based on different occlusal positions.

Main Methods:

  • Ten orthodontists reviewed 20 case vignettes on three occasions.
  • Casts were presented twice in intercuspal position (ICP) and once in centric relation (CR).

Related Experiment Videos

  • Treatment decisions regarding need, mechanics, extraction, orthognathic surgery, and anchorage were recorded and analyzed using kappa statistics and Wilcoxon signed-rank test.

    • Main Results:

    • A statistically significant difference was found only for the extraction decision when comparing hand-held casts to articulated casts (P=0.007).
    • No other significant differences in treatment decisions were observed between ICP and CR articulation.
    • Trends suggested potential differences in orthognathic surgery and anchorage support decisions, but these were not statistically significant.

    Conclusions:

    • Routine articulation of study models in centric relation for all orthodontic patients is not supported by this study's findings.
    • Articulation of study models did not meaningfully alter overall treatment planning decisions.
    • Further research focusing on specific malocclusions may be necessary to identify potential benefits of cast articulation.