|
KMID : 0355219990240020207
|
|
Journal of Korean Academy Oral Medicine
1999 Volume.24 No. 2 p.207 ~ p.218
|
|
|
Effects of Clutch Adaptation on the Mandibular Rotational Torque Movement
|
|
12한경수/12Kyung Soo Han
12이규미/12허문일/12Gyu Mee Lee/12Moon Il Her
|
|
|
Abstract
|
|
|
-Abstract-
This study was performed to investigate the effects of clutch adaptation on the
mandibular rotational torque movement in normal people. 69 dental students were
selected for the study. Their mean age were 23.6 years and they did not present any
signs and symptoms of temporomandibular disorders.
BioEGN with Rotate program was used to observe and
record the amount of mandibular rotational torque on protrusion, on right excursion, on
left excursion, and on comfortable wide opening movement. The natural tooth contact
movement and the movement with clutch were performed in the above four each
mandibular movement. clutch was made by the method used in Pantronic
clutch fabrication. Distance of slant frontal which was translatory trajectory in frontal
plane and degree of rotational torque in horizontal and in frontal plane were recorded.
The data obtained were processed with SPSSWIN program and the results were as
follows :
1. Distance of slant frontal in each mandibular movement generally increased with
clutch.
2. Degree of rotational torque in horizontal and in frontal plane on protrusion and on lateral excursions did not increase with clutch, but the degree on wide opening increased with clutch.
3. Degree of rotational torque in horizontal plane on protrusion and on lateral excursions
did not show any difference between right and left side, but the degree in frontal plane on protrusion and lateral excursions showed significant difference between right
and left side.
4. Total amount of rotational torque from right and left sides on protrusion and lateral excursions were not increased with clutch, but the torque degree on wide opening
movement was increased with clutch. And in this case, degree in horizontal plane
was larger than that frontal plane.
5. Correlation between total amount of rotational torque in horizontal plane and that in frontal plane were highly significant on protrusion and on lateral excursions with or
without clutch, but the significant correlation on wide opening without clutch became
not significant with clutch.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
 
|
|
|
Listed journal information
|
|
|