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The Delaire analysis showed a stronger correlation between maxillomandibular retrusion and sleep apnea severity (apnea-hypopnea index) compared to the Tweed analysis. This suggests Delaire may be preferable for diagnosing sleep-disordered breathing.

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Area of Science:

  • Orthodontics
  • Sleep Medicine
  • Radiology

Background:

  • Cephalometry aids in sleep apnea treatment planning.
  • Maxillomandibular retrusion influences treatment choices (oral appliances, surgery).
  • Tweed and Delaire analyses are used to assess maxillomandibular position.

Purpose of the Study:

  • Compare Tweed and Delaire cephalometric analyses for diagnosing maxillomandibular retrusion.
  • Determine the correlation between maxillomandibular retrusion and the apnea-hypopnea index (AHI) for both methods.

Main Methods:

  • Retrospective cohort study at a university hospital.
  • Included patients with sleep-disordered breathing and available cephalometric/polysomnographic data.
  • Calculated Pearson correlation coefficients between maxillomandibular retrusion and AHI for Tweed and Delaire analyses.

Main Results:

  • 243 patients included (42 female, 201 male).
  • Delaire analysis showed statistically significant correlations for both maxillary (r=-0.160, P=.012) and mandibular retrusion (r=-0.201, P=.002) with AHI.
  • Tweed analysis did not show statistically significant correlations for either maxillary (r=-0.109, P=.089) or mandibular retrusion (r=-0.090, P=.16).

Conclusions:

  • The Delaire analysis demonstrated a superior correlation between maxillomandibular retrusion and AHI.
  • Delaire analysis may be a more suitable cephalometric tool for evaluating sleep-disordered breathing.
  • This finding supports the use of Delaire analysis in the workup of sleep-disordered breathing.