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Correlation between disc displacements and locations of disc perforation in the temporomandibular joint

X M Liu1, S Y Zhang, C Yang

  • 1Department of Oral & Maxillofacial Surgery, Ninth People's Hospital, School of Stomatology, Shanghai JiaoTong University, No. 639, Zhi Zao Ju Rd, 200011, Shanghai, People's Republic of China.

Dento Maxillo Facial Radiology
|March 6, 2010
PubMed
Abstract

Insights

Temporomandibular joint (TMJ) disc displacement types correlate with disc perforation locations. Anterolateral displacement showed a significantly higher incidence of medial disc perforation compared to other types.

Area of Science:

  • Orthodontics
  • Oral and Maxillofacial Surgery
  • Radiology

Background:

  • Disc displacement is a common temporomandibular joint (TMJ) disorder.
  • Disc perforation is a significant complication that can lead to TMJ dysfunction.
  • Understanding the relationship between displacement and perforation is crucial for diagnosis and treatment.

Purpose of the Study:

  • To investigate the correlation between specific temporomandibular joint (TMJ) disc displacement types and the locations of disc perforation.
  • To determine if TMJ disc displacement patterns influence where disc perforations occur.

Main Methods:

  • 157 patients (162 joints) with arthroscopically confirmed disc perforation were analyzed.
  • Temporomandibular joint (TMJ) MRI was used to classify disc displacement types pre-operatively.
  • Arthroscopy documented the precise locations of disc perforations.
  • Fisher's exact test analyzed the correlation between displacement types and perforation sites.

Main Results:

  • Medial disc perforation occurred in 55.6% of joints with anterolateral displacement without reduction.
  • Pure anterior displacement showed only 3.7% incidence of medial disc perforation.
  • Anteromedial displacement without reduction did not present with medial disc perforation.
  • A statistically significant difference in medial disc perforation incidence was observed across displacement groups.

Conclusions:

  • A significant correlation exists between temporomandibular joint (TMJ) disc displacement types and the locations of disc perforation.
  • Anterolateral disc displacement is strongly associated with a higher incidence of medial disc perforation.
  • The type of TMJ disc displacement appears to directly influence the anatomical site of disc perforation.

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