• Journal of Oral Medicine and Pain
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• v.21 no.2
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• pp.293-304
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• 1996

The purpose of this study was to investigate the peak electromyographic activity(EMG) and time intervals in firing sequence of Anterior temporalis(TA) and Masseter(MM) on clenching, the number of tender points in the head and neck muscles, the occlusal contact state on clenching, and their relationship. 78 patients with Temporomandibular Disorders(TMDs) participated and were classified into articular or muscular group by clinical signs and symptoms. BioEMG$\textregistered$ of integrated masticatory function analyzer, Biopak$\textregistered$ system(Bioresearch Inc., USA), was used to measure EMG and related items, and T- Scan$\textregistered$(Tekscan, USA), computerized occlusal analyser, was used to record occlusal contact state on maximum voluntary clenching. EMG and occlusal contact were synchronously recorded and analysed with SAS Statistical program. The results of this study were as follows : 1. In total subjects, EMG of TA was lower than that of MM in articular group but in muscular group, vice versa, As a result, the ratio TA to MM was significantly different between the two groups. no significant differece. 3. The number and force of occlusal contact were more in articular group, but there was no significant difference in Total Left-Right statistics(TLR) between the two groups. 4. In unilaterally affected subjects for muscle function, no significant difference was observed between the affected side and the contralateral side in articular group, but in muscular group, the item of the number of tender points showed significant difference. However, for occlusal contact items, contact force in articular group shows significant difference between the two sides. 5. Rate of coincidence of the first firing side of TA with affected side or preferred chewing side was higher and not different between the two groups, but no significant correlation was showed between the first firing side and the first occlusal contact side.

• Sijohaknonchong
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• v.42
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• pp.187-212
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• 2015

This study is focused on how Kim Sujang Gagok which celebrated Chingyeong Chinjam procedure was created on ChungHae year (1767). It largely consists of four main parts. First, it studied Chingyeong procedure which was arranged by the King on 26 February 1767. Chingyeong procedure was performed at the East Jeokjeon(this area is now Jeonnong-dong). Second, it also studied Chinjam procedure which was arranged by the Queen on 10 March 1767. Chinjam procedure was performed at the old ruins of Gyeongbok Palace. Third, Kim Sujang created the celebrated Gagok on 9 March, the day before Chinjam procedure. It tells that he certainly recognized Chinzamryae was contained within Chingyeongryae. Finally, While Kim Sujang served as a Seoli of Byeongjo and then got an additional office and a practical office for old man, he got involved in Chingyeong Chinjam procedure on ChungHae year. And consequently, it seems that he created those celebrated Sijo.

• Journal of Oral Medicine and Pain
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• v.22 no.1
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• pp.137-143
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• 1997

두개하악장애는 가장 흔히 발병하는 질병중의 하나이다. 이때 저작계에 흔히 호소하는 주소가 근육의 통증이다. 통증의 정도를 측정하는 방법으로 촉진이 가장 널리 사용되고 있으나 정량화하기 어렵다는 단점이 있다. 따라서 통증 측정기 등과 같이 다양한 시도가 진행되고 있다. 근육이나 관절의 병적 소견은 해당조직의 혈액순환장애나 염증반응과 종종 관련이 있다. 이러한 상태는 신체의 표면과 밀접한 관계가 있어 피부온도에 영향을 미치며, 따라서 thermography로 측정할 수 있다. 피부온도의 측정은 질병의 활성 상태를 평가하는 데 유익하며, 또한 치료결과를 평가하는 데에도 효과적이다. 객관적 피부온도 측정장치가 있다면 턱관절이나 저작근의 이상상태를 평가하는데 매우 도움이 될 것이다. 따라서 본 연구의 목적은 경제적이면 양측성으로 특정 부위의 피부온도를 측정할 수 있는 기기를 사용하여 검사자내 및 검사자간 신뢰도를 측정하고 좌우 온도차이를 확인함으로써 향후 질환 및 치료 겨오가에 대한 임상적 평가시 객관적 측정방법의 하나가 될 수 있는 지를 알고자 하는 데 있다. 구강내 염증이나 이상이 없으며 두개하악장애가 없는 치과대학생 15명을 대상으로 조사하였다. 평균연령은 24.9세, 범위는 24-30세이었다. 사용한 기기는 미국산 YSI Precision 4000이다. 18-2$0^{\circ}C$의 일정한 실내온도에서 두 검사자가 각각의 검사를 알지 못하는 상태에서 별도로 정해진 부위에 검사를 시행하고, 약 1주일후 이전 검사에 대한 기억이 없어진 상태에서 두 검사자중 한 검사자가 다시 동일한 검사를 시행하였다. 측정치들을 이용하여 상관관계를 계산하고 이에 대한 유의성을 검정하였다. 1. 검사자내 상관관계(r)는 좌 .798(p=<.0001), 우 .757(p=<.0001)이었다. 2. 두검사자간 상관관계(r)는 좌 .958(p=<.0001), 우 .951(p=<.0001)이었다. 3. 좌우 측정치간의 차이는 유의한 차이가 없었다. 4. 근육부위별 측정에서는 inferior masseter muscle의 검사자간에서만 유의한 상관관계가 없었을 뿐 anterior masseter muscle, anterior temporalis 모두 검사자내 및 간에 유의한 상관관계를 나타내었다. 이상의 결과로 보아 정상인에 있어 근육내 발통점의 피부온도는 검사자간에는 특정부위에 따라 다소 차이가 있을 수 있으나 일반적으로 높은 재현성을 보여줌으로서 향후 교근 및 측두근의 임상연구 평가에 피부온도조사는 도움이 되리라 사료된다.

• Journal of Oral Medicine and Pain
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• v.22 no.1
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• pp.167-181
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• 1997

The aim of this study was to investigate the relationship between velocity and factors which could affect the velocity of mandibular movement. For this study, 30 dental students without any masticatory signs and symptoms and 90 patients with temporomandibular disorders(TMD) were selected as the control group and the patients group, respectively. After determining Angle's classification and lateral guidance pattern of occlusion, clinical examination for TMD was perfomed. Velocity and distance of mandibular movements were recorded with BioEGN, reproducibility index of lateral excursions was evaluated by Pantronic(PRI) and BioEGN (BERI) activity in masticatory and cervical muscles were measured with BioEMG, and occlusal contact time and cross-arch unbalance(Total left-right statistics, TLR) on clenching were recorded with T-scan, respectively. The results of this study were as follows : 1. Velocity in the patients was faster than that in the controls in most mandibular movements, but on wide opening and closing movement, result was reverse. 2. Velocity on closing movements were faster than that on opening movements in the control group and a similar tendency was also shown in the patients group. 3. Patients with muscle disorders showed a tendency to have the highest value of velocity of all diagnostic subgroups, while patients with degenerative joint diseases showed a tendency to have the lowest value. 4. Patients with canine guidance showed a tendency to have the highest value of velocity in three subgroups by lateral guidance pattern, while patients with group function showed a tendency to have the lowest value. 5. BERI had a positive correlation with opening velocity on lateral excursion, while TLR had a negative correlation with opening velocity on swallowing. 6. EMG activity on clenching in masticatory muscles had negative correlation with opening velocity on border movements, and on swollowing, while the activity in rest correlated positively with opening velocity on border movements. 7. There were positive correlation between the velocity and the distance in long components of mandibular trajectory.

• The Journal of the Convergence on Culture Technology
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• v.8 no.3
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• pp.43-50
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• 2022

Claude Debussy's is a solo piano piece written in 1894. However, for unknown reasons, the entire piece was not published until 1977, despite clear evidence that Debussy intended to publish it during his lifetime. Interestingly, the second movement of the three pieces comprised in the work was published independently in February 1896 through the Parisian periodical Le Grand Journal. Partly because the work was recently published, it remains relatively more unknown to pianists and music lovers than other piano solo pieces by Debussy. Thus, this article addresses in detail the compositional background of this work, focusing on why the work was not published during Debussy's lifetime. Furthermore, by analyzing this piece in detail, this article intends to discuss the stylistic characteristics of the work regarding its melody, phrase structure, harmony, and form. This survey, which would help understand the musical style embodied in this piece, aims to contribute to improving the awareness of the work.

• Journal of Oral Medicine and Pain
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• v.30 no.3
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• pp.353-360
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• 2005

The aim of this study was to investigate the impact of depression, somatization, and jaw disability on graded chronic pain of TMD using Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD). Ninety-three patients (17 men and 76 women, mean$\pm$SD age of 30.1$\pm$12.5 years) diagnosed with TMD based on RDC/TMD axis I criteria were administered RDC/TMD axis II history questionnaire. The relationships between depression, somatization, jaw disability, and each parameters of graded chronic pain (e.g. pain intensity, pain days, disability score, disability days, graded chronic pain scale) were analyzed by multiple regression analysis. The obtained results were as follows: 1. Among 93 TMD patients, the prevalence of low disability group of graded chronic pain scale was 42.0% and high disability group of graded chronic pain scale was 51.5%. 2. Depression did not show any significant influences on pain intensity, pain days, disability score, disability days, and graded chronic pain scale. 3. Somatization showed a significant effect on pain intensity (p<0.01), disability days (p<0.01), and graded chronic pain scale (p<0.01) except for both pain days and disability score. 4. Jaw disability also showed a significant effect on pain intensity (P<0.001), disability days (p<0.01), and graded chronic pain scale (P<0.001) except for both pain days and disability score. Somatization and jaw disability may closely relate to the pain intensity and degree of disability that TMD patients perceive. Therefore, comprehensive understanding of psychological profile and improvement of functional limitation of jaw movements in the patient should be considered to obtain an excellent outcome of chronic TMD management.

• The korean journal of orthodontics
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• v.30 no.4 s.81
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• pp.491-507
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• 2000

The purpose of this study was to investigate if there were a significant differences in mandibular position between cephalometric measurements from a centric occlusion tracing compared to those of a acquired centric relation by stabilization splint on malocclusion patient with TMD. 60 malocclusion patients, who had TMD and CO-CR discrepancy beyond normal range, were selected and subdivided into Class I, II, III by Angle's classification and also subdivided into clockwise, straight downward, and counterclockwise group by Jarabak's posterior facial height/anterior facial height ratio. Lateral cephaolmetric radiographs with the mandible in centric occlusion were taken and measured, and for each Patient the stabilization splint with mutually protected occlusal scheme was applied for minimum 3months. After each patient's CO-CR discrepancy was in normal range, lateral cephalometric radiographs were retaken and measured. The comparison of the difference between CO-CR cephalometric measurements in all sample, Class I, II, III groups, and Clockwise, Straight downward, Counterclockwise groups were studied. The finding of this study can be summarized as follows: 1 In all sample, the value of cephalometric measurements was significantly different between CO-CR. The mandible rotated to down and posterior position and the vertical change was greater than the horizontal change (overjet-1.3mm increase, overbite-1.9mm decrease). 2. In Class II malocclusion group, most of the mean difference value between CO-CR is higher than that of the other groups and more measurements was statically significant. 3. In clockwise and counterclockwise group, some of the mean difference value is higher than that of straight downward group and more measurements was statically significant. 4. There ware no measurements that explain centric relation measurements from the type of malocclusion, facial pattern and centric occlusion measurements. Henceforth, it is strongly recommended that stabilization splint therapy for orthodontic treatment on TMD patient should be excuted upon overall facial types prior to orthodontic diagnosis and treatment planning.

• The korean journal of orthodontics
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• v.30 no.2 s.79
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• pp.223-233
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• 2000

An epidemiological investigation was carried out at Yongin, Kyungkido, South Korea to determine the prevalence of symptoms of temporomandibular disorders and parafunctional habits in adolescent aged 16, 17 and 18 years. 2,098 students(male 507, female 1,591) were randomly selected and investigated with the questionnaire. The results were obtained as follows, 1. The prevalence of symptoms of temporomandibular disorders was $80.9\%$ total, $77.3\%$ for male and $82.0\%$ for female with significance between male and female(P<0.05). 2. The prevalence of symptoms of temporomandibular disorders was gradually increased according to increasing age with significant difference among ages(P<0.001) 3. The most frequent symptom in the temporomandibular disorders is pain on chewing($65.9\%$), and then clicking($50.7\%$), Pain on mouth opening($41.8\%$), and pain on TMJ($36.8\%$) 4. There was little corelationship between clenching habits and symptoms of temporomandibular disorders(r=0.166), and also between bruxing habits and those(r=0.057).

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.31 no.5
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• pp.370-378
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• 2005

The purpose of this study is that evaluate the distribution and biological roles of TNF-a, interleukin-1${\beta}$(IL-1${\beta}$), interleukin-6(IL-6) and tissue inhibitors of metalloproteinase-1(TIMP-1) in the synovial fliud of patients with non-inflammatory chronic temporomandibular joint(TMJ) disorders in relation to pain during joint movements and magnetic resonance imaging(MRI) findings. TMJ synovial fluids aspirates were obtained from 36 patients (36 joints) with chronic TMJ disorders and from 8 controls(8 joints). Patients were divided to four groups. The control group was from healthy volunteers(8 joints), group I(18 joints) was patients with anterior disc displacement with reduction, group II(5 joints) was patients with disc displacement without reduction and group III (5 joints) was osteoarthritis. The TNF-${\alpha}$, IL-1${\beta}$ and IL-6 levels in the aspirates were determined by using an enzyme-linked immunosorbent assay and the TIMP-1 level was measured by an enzyme immunoassay. Following examinations for pain during joint movements and MRI observations, these cytokines' level and frequencies of detection were compared. The level of IL-1${\beta}$was not significant different in all groups. but the level of TNF-${\alpha}$, IL-6 and TIMP-1 were significant different among groups. The level of IL-6 and TIMP-1 were correlated to pain during movement(p<0.01) and the level of TNF-a(p<0.05). Also, the level of IL-6 was correlated to the level of TIMP-1(p<0.01). Especially, The level of the TIMP-1 level was significantly correlated to the pain during movement and showed very high levle of Pearson's correlation coefficient (r=0.833)(p<0.001). The results indicated that the TNF-${\alpha}$, IL-6 and TIMP-1 levels in the TMJ aspirates of patients with chronic TMJ disorders have been raised. Especially, IL-6 and TIMP-1 were very high levels in the patients who were degraded in the TMJ. Also, TNF-${\alpha}$, IL-6 and TIMP-1 showed the significant correlation in the chronic temporomandibular joint disorders. Therefore I suggest that these cytokines were also correlated to the pain during movement in the chronic temporomandibular joint disorders.

• Journal of Oral Medicine and Pain
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• v.21 no.1
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• pp.67-78
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• 1996

This study was performed to compare the TMJ sounds by means of vibration-related items by Sonopak such as integral, high integral, above 300/(0-300) ratio, peak amplitude, peak frequency and median frequency before and after occlusa1 splint therapy as well as counselling, physical modalities. For this study 22 patients with craniomandibular disorders (CMDs) were selected and examined by routine diagnostic procedure for CMDs including Transcranial and Panoramic radiographs and were classified into 3 CMDs subgroups : disc displacement with reduction, disc displacement without reduction, and degenerative joint disease. Visual analogue scale (VAS) about joint sound was recorded during treatment period and VAS treatment index (VAS Ti) was calculated from the VAS data and treatment duration. The author evaluated and compared treatment results by several parmeters such as symptom duration, timing of joint sound, parafunctional habits, trauma, and diagnostic classification. The obtained results were as follows : 1. Before the treatment, the highest value of peak amplitude was observed in disc displacement with reduction group and value of median frequency was highest in degenerative joint disease group. In addition the highest values of peak frequency and ratio ware observed in degenerative joint disease group, though they were not significant. Furthermore the lowest value of high integral was observed in disc displacement without reduction group and though it was not significant, value of integral was lowest in that group. 2. Among 3CMDs subgroups disc displacement with reduction group showed the significantly decreased value of high integral and degenerative joint disease group had the significantly decreased value of integral after conservative treatment including occlusal splint therapy. Conclusively conservative treatment including occlusal splint therapy vay be effective in the treatment of CMDs including TMJ sound. 3. Fair prognosis for conservative treatment was observed in acute group under 6 months than chronic group, 6 months over in symptom duration but there was no statistical difference. The result for conservative treatment was observed slightly poor in subjects with bruxism, clenching, unilateral chewing habit and trauma history but there were no statistical differences.