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The TMJ-ear connection
D H Morgan1, R L Goode, R L Christiansen
1Department of Surgery, ENT, Otolaryngology, Head and Neck, Stanford University, School of Medicine, CA, USA.
Cranio : the Journal of Craniomandibular Practice
|January 1, 1995
Summary
Three key anatomical structures, including the mandibular malleolar ligament, chorda tympani nerve, and anterior tympanic artery, pass through the petrotympanic fissure. Avoiding these structures during implant placement can alleviate associated ear symptoms.
Area of Science:
- Anatomy
- Otolaryngology
- Temporomandibular Joint Disorders
Background:
- The petrotympanic fissure is a complex anatomical pathway.
- Understanding structures traversing this fissure is crucial for certain medical and dental procedures.
Purpose of the Study:
- To document the specific anatomical structures that pass through the petrotympanic fissure.
- To correlate the impingement of these structures by implants with clinical symptoms.
- To suggest implant modifications for symptom relief.
Main Methods:
- Anatomical review and documentation of structures within the petrotympanic fissure.
- Clinical case review of patients experiencing ear symptoms related to implants.
- Analysis of implant design and its relation to anatomical structures.
Main Results:
- Identified the mandibular malleolar ligament, chorda tympani nerve, and anterior tympanic artery as traversing the petrotympanic fissure.
- Observed that implants impinging on or covering these structures can cause ear problems and other symptoms.
- Noted symptom relief upon removal or modification of implants to avoid these structures.
Conclusions:
- The mandibular malleolar ligament, chorda tympani nerve, and anterior tympanic artery are significant structures within the petrotympanic fissure.
- Implant placement must consider these anatomical structures to prevent adverse ear-related symptoms.
- Modifying implant design to avoid the petrotympanic fissure offers a potential solution for symptom management.