Introduction: The temporomandibular joint
disorder (TMD) refers to mandibular dysfunction caused by reduced function of
the primary structures that compose the temporomandibular joint (TMJ) or other structures
related to the TMJ or by the interaction of these structures with each other. Ultrasound
imaging (USI) can not only demonstrate soft tissue alterations but also
visualize hard tissue alterations. Pulsed-wave Doppler mode is a widely used technique in the study of movable
structures, particularly the vascular system.
Material and Methods: 16 patients (32 TMJ)
were included in this study, grouped in 10 women’s and 6 men’s). Extraoral and intraoral examination of the TMJ was realized to detect
anterior disc displacement with reduction. Ultrasonography high resolution
examination was carried out by LOGIQ e Healthcare® with a 16 MHz
high frequency transducer. A musculoskeletal L8-18i wideband linear array was
used for pulsed wave doppler mode examination.
Results: Fourteen
patients presented anterior disc displacement with reduction, and 2 patients
presented normal disc position. When meniscal displacement is detected, PWD
mode presents a distinct waveform on the timeline of the exploration.
Conclusion: Pulsed-wave Doppler mode provides an advantage in USI, helping
to confirm the existence of anterior disc displacement or crepitation. USI is a
noninvasive technique with no radiation exposure and permits static and dynamic
exploration of the TMJ with a short examination time, low cost, and no contraindications
or special patient preparation.
Instituto Asturiano de Odontología
Primary Language | English |
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Subjects | Dentistry |
Journal Section | Original Articles |
Authors | |
Publication Date | June 30, 2020 |
Published in Issue | Year 2020 Volume: 4 Issue: 1 |