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자료유형
학술저널
저자정보
저널정보
대한안면통증구강내과학회 Journal of Oral Medicine and Pain 대한구강내과학회지 제28권 제2호
발행연도
2003.6
수록면
261 - 273 (13page)

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This study was performed to investigate the change of the mandibular vertical dimension, especially at the several rest positions, induced by speech and swallowing after treatment of temporomandibular disorders and to compare the vertical dimension among those several mandibular rest positions. Thirty patients with temporomandibular disorders participated in this study, and the mean follow-up period after the first visit was 9.7 months. Clinical parameters related to pain, mandibular mobility, occlusion, and parafunction were examined. Subjects were asked to sit upright with relaxed natural head posture and then the two mandibular movements were performed and recorded with BioEGNⓡ of Biopak systemⓡ (Bioresearch Inc., Milwaukee, USA). A sentence of 'Sue is missing her house' was used to record the speech pattern. The positions observed and named in speech movement were rest, 'ssi', 'her', 'ha', and 's' position, and in swallowing movement were rest before swallowing, swallowing-early, swallowing-late, 0.5 sec, after swallowing, and rest after swallowing.
Data obtained were processed and analysed by SPSS windows(ver. 10.0) program, and the results of this study were as follows:

The mandibular positions showing vertical difference between before and after treatment were 'her', 'ha', and 's' in speech, and were swallowing-late, 0.5 sec, after swallowing, and rest after swallowing in swallowing. All these positions were located in the late half of the movements and the vertical dimension of rest positions in swallowing were increased after treatment. Rest positions in both of the movements did not show any significant difference for the vertical distance from habitual intercuspal position among them before treatment, however, which were changed and allowed differentiation after treatment. The vertical dimension of rest positions ranged 1.0-2.4 mm in both of the movements.
The ratio of the maximum opening range at the swallowing-late position in swallowing movement to the maximum opening range at the 'ha' position in speech before and after treatment were 31% and 36%, respectively. Correlation between the vertical dimension of rest positions and the clinical maximum opening range were significantly negative at the 'ssi' and 's' position only in speech movement before treatment.
In conclusion, it was not easy to decide which position of all the mandibular positions observed in speech and in swallowing was the optimal mandibular rest position. However, the author suggested that the optimal mandibular rest position could be induced by and after swallowing movement.

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3. 연구결과

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5. 결론

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