Morphometric analysis of temporomandibular joint elements.

Area of Science:

• Anatomy
• Biomedical Engineering
• Oral and Maxillofacial Surgery

Background:

• The temporomandibular joint (TMJ) is a complex articulation crucial for mastication and speech.
• Understanding TMJ morphology is essential for diagnosing and treating joint disorders.
• Existing methods for modeling TMJ components may lack biofidelity.

Purpose of the Study:

• To investigate the morphological characteristics of human temporomandibular joint (TMJ) elements.
• To assess the feasibility and accuracy of a novel biofidelic articular disc casting technique.
• To identify potential correlations between TMJ components relevant to surgical and research applications.

Main Methods:

• Dissection and bilateral measurement of masseter muscle, mandibular ramus, and articular disc dimensions (length, width, thickness) from 18 cadavers.
• Utilized digital slide calipers for precise anatomic measurements.
• Developed and tested a novel biofidelic articular disc casting method, comparing model accuracy to biological counterparts.

Main Results:

• Significant correlations were found between articular disc length and thickness, as well as between various dimensions of the masseter muscle and mandibular ramus.
• The novel casting technique demonstrated no significant differences when comparing model measurements to the original biological articular discs.
• Observed correlations highlight interrelationships between TMJ components.

Conclusions:

• The identified correlations between TMJ elements are valuable for oral-maxillofacial surgeons and researchers studying TMJ disorders.
• The developed casting technique is accurate and effective for creating biofidelic models of human articular discs.
• This research contributes to improved understanding and modeling of TMJ anatomy.