Characteristics of temporomandibular joint sounds in reducible anterior disc displacement of youth / 华西口腔医学杂志
West China Journal of Stomatology
;
(6): 600-603, 2011.
Article
in Chinese
| WPRIM
| ID: wpr-241893
ABSTRACT
<p><b>OBJECTIVE</b>To compare the vibration parameters in reducible anterior disc displacement and symptomless youth, and explore the clinical diagnostic value of frequency spectrogram of temporomandibular joint (TMJ) sounds.</p><p><b>METHODS</b>21 youth with anterior disc displacement were included as experimental group, and 26 symptomless youth were included as control group. The joint vibrations during rhythmic maximal open-close jaw movement of all subjects were recorded. The sensitivity and specificity of total integral in diagnosis of reducible anterior disc displacement were calculated.</p><p><b>RESULTS</b>All TMJ vibration parameters, include total integral, integral < 300 Hz, integral > 300 Hz, > 300/< 300 Hz radio, peak amplitude, peak frequency and median frequency, were significantly higher in experimental group than that in control group (P < 0.05). Along with the increasing of disc displacement degree, the TMJ vibration parameters were increasing, and total integral significantly increased (P < 0.05). The total integral demonstrated a high sensitivity and specificity in diagnosis of anterior disc displacement with reduction (0.86 and 0.85, respectively).</p><p><b>CONCLUSION</b>The TMJ vibration parameters are significantly higher in youth with reducible anterior disc displacement than that in symptomless youth. Different pathological stages of disc displacement show different TMJ sounds.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Sound
/
Temporomandibular Joint
/
Vibration
/
Temporomandibular Joint Disorders
/
Sensitivity and Specificity
/
Temporomandibular Joint Disc
Type of study:
Diagnostic study
Limits:
Adolescent
/
Female
/
Humans
/
Male
Language:
Chinese
Journal:
West China Journal of Stomatology
Year:
2011
Type:
Article
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