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Related Experiment Videos

Submentovertex radiology: cephalometric considerations in temporomandibular dysfunction

M F Maxwell1, A G Farman, B S Haskell

  • 1Division of Radiology and Imaging Sciences, University of Louisville, School of Dentistry, Kentucky 40292, USA.

Cranio : the Journal of Craniomandibular Practice
|January 1, 1995
PubMed
Summary

This study found no significant link between specific temporomandibular dysfunction (TMD) symptoms and maxillofacial asymmetries detected via cephalographs. Radiographic signs did not predict clinical TMD signs or symptoms.

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Area of Science:

  • Dentistry
  • Orthodontics
  • Radiology

Background:

  • Controversy exists regarding the association between radiographic findings and clinical temporomandibular dysfunction (TMD).
  • Previous studies have yielded conflicting results on the correlation between maxillofacial asymmetries and TMD.
  • Understanding this relationship is crucial for accurate diagnosis and treatment planning.

Purpose of the Study:

  • To investigate correlations between radiographically detected maxillofacial asymmetries and the clinical signs and symptoms of TMD.
  • To determine if specific radiographic measurements predict clinical TMD manifestations.
  • To clarify the relationship between temporomandibular joint (TMJ) morphology and TMD symptoms.

Main Methods:

  • Collected clinical and radiographic data from 52 patients referred for temporomandibular joint (TMJ) tomographs.

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  • Utilized submentovertex (SMV), lateral, and posterior-anterior (PA) cephalographs, alongside corrected angle parasagittal tomographs.
  • Recorded clinical signs and symptoms of TMD for correlation analysis.

    • Main Results:

    • Increased discrepancy in posterior condyle to pogonion measurement correlated with lateral shifts of the pogonion and incisors.
    • An increased ANB angle was associated with greater differences in condylar angle measurements.
    • The side with a larger condylar angle showed a forward position on SMV.
    • Marmary's Centerline proved a reliable baseline for SMV analyses.

    Conclusions:

    • No statistically significant relationship was found between specific TMD signs/symptoms and maxillofacial asymmetries on SMV, lateral, or PA cephalographs.
    • The radiographic signs studied were not effective predictors of specific TMD signs and symptoms.
    • Further research may be needed to elucidate the complex relationship between radiographic findings and TMD clinical presentation.