Development of a new device for recording condylar head movement

Area of Science:

• Biomedical Engineering
• Dental Mechanics
• Kinesiology

Background:

• Existing mandibular movement recording devices often require intraoral components and facebows, limiting their use in specific conditions like sleep.
• The need for non-invasive, convenient, and accurate methods for recording temporomandibular joint (TMJ) dynamics is significant in clinical practice.

Purpose of the Study:

• To develop and validate a novel, non-invasive device for precise recording of mandibular movement.
• To offer a practical alternative to existing devices, particularly for applications where intraoral instruments are unsuitable.

Main Methods:

• A subminiature pressure transducer was integrated into a custom-fitted silicone device placed in the external auditory meatus.
• The device utilizes the principle of palpating the external auditory meatus to capture condylar head movements.
• The newly developed device was validated by comparing its recordings with data from a CADIAX system.

Main Results:

• The newly developed device successfully recorded condylar head movement without requiring intraoral components.
• Validation against the CADIAX system confirmed the device's accuracy and utility.
• The device demonstrated ease of use and convenience for routine clinical examinations.

Conclusions:

• The newly developed non-invasive recording device is effective for capturing mandibular movement.
• This device presents a practical and convenient solution for clinical assessment of TMJ dynamics, overcoming limitations of existing technologies.