반복적 개구운동과 두부자세의 변화가 악관절진도에 미치는 영향
Effect of Repetitive Opening Movement and Head Posture on the Vibration of the Temporomandibular Joint
소속 상세정보
1/2곽동곤/12Dong Kon Kwag
1/2한경수/1/2김종영/12Kyung Soo Han/12Jong Young Kim
KMID : 0355220000250010087
Abstract
This study was performed to investigate the effects of repetitive mandibular opening
movement and change of head posture on the vibration of temporomandibular (TM)
joint. For this study, 23 patients with internal derangement of TM joint were selected.
ALL they had clinically noticeable TM joint sound. Observation of the joint vibration
were performed in four head postures, namely, natural head posture (NHP), forward
head posture (FHP), upward head posture (UHP), and downward head posture (DHP).
For recording of joint sound vibration, Sonopar of Biopak system(Bioresearch Inc.,
Milwaukee, USA) was used, The author could take results related to integral higher
then 300Hz, integral lower then 300Hz, ratio of integral higher than 300Hz to integral
lower then 300Hz, total integral which was sum of higher and lower integral, peak
amplitude, and peak frequency in each opening movement, which was carried out three
times in each head posture, Integral means amount of vibration.
The data obtained were analysed by SPSS windows program and the results of this
study were as follows :
1. In NHP, total integral in right TM joint was 50.3Hz in the first opening, 67.9Hz in
the second opening, and 74.0Hz in the third opening movement, but there was no
significant increase of total integral with repetitive opening movement. This finding was
similar in left TM joint. Integral lower than 300Hz were higher than integral higher
than 300Hz in almost every opening movement.
2. There was no significant difference of total integral between right and left side of
TM joint, but there was a tendency of higher total integral in right TM joint than that
in left TM joint except for results in DHP.
3. Peak amplitude in NHP ranged from 2.0 to 4.7 and peak frequency in NHP were
101.4 - 170.0Hz. And there was no consistent findings related to increase or decrease of
these value according to repetitive opening in each head posture.
4. Change of head posture did not result any difference in integral, peak amplitude, and
peak frequency.
In conclusion, change of head posture and repetitive mandibular opening movement did
not make any significant effect on the vibration of temporo-mandibular joint, especially,
on total integral, peak amplitude, and peak frequency.
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