• 한국전문물리치료학회지
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• 제27권2호
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• pp.126-132
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• 2020

Background: Augmented somatosensory feedback stimulates the mechanoreceptor to deliver information on bodily position, improving the postural control. The various types of such feedback include ankle-foot orthoses (AFOs) and vibration. The optimal feedback to mitigate postural sway remains unclear, as does the effect of augmented somatosensory feedback on muscle co-contraction. Objects: We compared postural sway and ankle muscle co-contraction without feedback (control) and with either of two forms of somatosensory feedback (AFOs and vibration). Methods: We recruited 15 healthy subjects and tested them under three feedback conditions (control, AFOs, vibration) with two sensory conditions (eyes open, or eyes closed and the head tilted back), in random order. Postural sway was measured using a force platform; the mean sway area of the 95% confidence ellipse (AREA) and the mean velocity of the center-of-pressure displacement (VEL) were assessed. Co-contraction of the tibialis anterior and gastrocnemius muscles was measured using electromyography and converted into a co-contraction index (CI). Results: We found significant main effects of the three feedback states on postural sway (AREA, VEL) and the CI. The two sensory conditions exerted significant main effects on postural sway (AREA and VEL). AFOs reduced postural sway to a level significantly lower than that of the control (p = 0.014, p < 0.001) or that afforded by vibration (p = 0.024, p < 0.001). In terms of CI amelioration, the AFOs condition was significantly better than the control (p = 0.004). Vibration did not significantly improve either postural sway or the CI compared to the control condition. There was no significant interaction effect between the three feedback conditions and the two sensory conditions. Conclusion: Lower-extremity devices such as AFOs enhance somatosensory perception, improving postural control and decreasing the CI during static standing.

• 대한치과교정학회지
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• 제46권1호
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• pp.42-54
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• 2016

The aim of this clinical report is to describe the complex treatment of an adult Class III malocclusion patient who was disappointed with the outcome of a previous oral rehabilitation. Interdisciplinary treatment planning was performed with a primary indication for implant removal because of marginal bone loss and gingival recession, followed by orthodontic and surgical procedures to correct the esthetics and skeletal malocclusion. The comprehensive treatment approach included: (1) implant removal in the area of the central incisors; (2) combined orthodontic decompensation with mesial displacement and forced extrusion of the lateral incisors; (3) extraction of the lateral incisors and placement of new implants corresponding to the central incisors, which received provisional crowns; (4) orthognathic surgery for maxillary advancement to improve occlusal and facial relationships; and finally, (5) orthodontic refinement followed by definitive prosthetic rehabilitation of the maxillary central incisors and reshaping of the adjacent teeth. At the three-year follow-up, clinical and radiographic examinations showed successful replacement of the central incisors and improved skeletal and esthetic appearances. Moreover, a Class II molar relationship was obtained with an ideal overbite, overjet, and intercuspation. In conclusion, we report the successful esthetic anterior rehabilitation of a complex case in which interdisciplinary treatment planning improved facial harmony, provided gingival architecture with sufficient width and thickness, and improved smile esthetics, resulting in enhanced patient comfort and satisfaction. This clinical case report might be useful to improve facial esthetics and occlusion in patients with dentoalveolar and skeletal defects.

• 대한치과보철학회지
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• 제56권1호
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• pp.64-69
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• 2018

치성점액종은 악골에 드물게 발생하는 양성 치성 종양이다. 본 증례의 60대 무치악 남성은 전상악부에 발생한 연조직 종괴 제거를 주소로 내원하였으며 절제 생검 결과 치성 점액종으로 확진되었다. 외과적 제거 후 잔존한 가동조직의 변형을 최소화 하기 위해 고안된 투명 레진 트레이로 인상을 채득하였다. 악간관계기록 및 납의치 시적시에 중립대 영역을 설정하고 기능적 연마면 형태를 인기하여 총의치의 안정성과 유지력을 증진시킬 수 있었다. 치성 점액종 제거 후 가동조직과 중립대를 고려하여 심미적, 기능적으로 만족스러운 총의치를 제작하였기에 이를 보고하는 바이다.

• Journal of Oral Medicine and Pain
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• 제20권2호
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• pp.407-420
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• 1995

This study was performed to evaluate and compare conservative treatment results by several parameters such as age, sex, symptom duration, type and timing of joint sound, parafunctional habits, splint type, and diagnostic classification. There have been too many articles reporting long term results of conservative treatment but articles related to comparison of treatment results by patients' self-evaluation have been rarely reported. For this study 258 patients with temporomandibular disorders(TMDs) were selected and examined by routine diagnostic procedure for TMDs. The subjects were classified into 5 TMDs subgroups ad treated with conservative treatments involving splints, physical modalities, jaw exercises, and counseling. Visual analogue scale(VAS) about pain, joint sound, and mouth opening limitation was recorded respectively during treatment period. From the VAS data and treatment duration, VAS treatment index(VAS Ti) was calculated. The obtained results were as follows : 1. Pain was the most frequent main symptom in subjects with temporomandibular disorders, and main symptom for mouth opening limitation was comparatively less than for pain or sound in disk displacement with reduction group or in degenerative joint disease group. 2. Degenerative joint disease group had the most poor treatment results and highest occlusal index of Helkim's index. 3. Good prognosis for conservative treatment was observed in acute group, under 6 months than chronic group, 6months over in symptom duration, and subjects with 40 years over in age showed the most poor prognosis. 4. Subjects treated with anterior repositioning splint had better treatment results than subjects treated with centric relation splint, but statistical significance in VAS Ti and treatment duration was not observed. 5. Treatment results according to affected side, types and point of joint sound did not show consistent statistical results. 6. The result for conservative treatment was observed poor in subjects with bruxism and clenching. 7. In studying coincidence between preferred chewing and affected side, frequency of preferred chewing side, in unilateral affection, was higher in ipsilateral than in contralateral side.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제39권1호
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• pp.14-20
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• 2013

Objectives: This study sought to evaluate the effect of simultaneous application of arthrocentesis and occlusal splint. Materials and Methods: A retrospective study of 43 patients (3 males, 40 females) whose symptoms had improved was conducted at the Department of Oral and Maxillofacial Surgery, Dong-A University Hospital between 2008 and 2010. Subjects were divided into three groups: Group A (17 patients with arthrocentesis and occlusal splints simultaneously applied), Group B (13 patients whose symptoms did not improve with occlusal splints, undergoing arthrocentesis after occlusal splint use for 8 weeks), and Group C (13 patients that only used occlusal splints). We compared these groups in maximum comfortable opening (MCO) and the visual analogue scale of pain and noise. Follow-up was performed at 1 week, 1 month, 3 months, and 6 months. Results: The improvement of symptoms was noted in all three groups, but Group A had a quicker improvement than the other groups, in terms of pain reduction and MCO increases. Conclusion: The simultaneous application of arthrocentesis and occlusal splints can reduce patient discomfort more quickly.

• 대한소아치과학회지
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• 제31권1호
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• pp.52-58
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• 2004

과잉치는 유치열에서 0.3-0.8%, 영구치열에서 1.0-3.5% 정도로 발생하며, 2:1로 남자에게 호발 9:1로 상악에서 호발한다. 그 중 하악 전치부에서 발생하는 빈도는 전체 과잉치중에서 2-4%의 매우 낮은 빈도를 보인다고 보고되었다. 과잉치가 계속 존재할 경우 나타날 수 있는 합병증으로서 치간이개, 인접한 정상치아의 맹출장애, 치관의 형성이상, 인접치의 치근흡수, 함치성 낭종 등을 들 수 있으며, 치열 발육 중인 어린이의 경우 성장 중임을 감안하여 바람직한 교합유도를 위한 정확한 진단과 함께 적절한 처치가 필요하다. 본 증례는 전북대학교병원 소아치과에 내원한 6세 환아의 하악 전치부에서 발견된 양측성 매복 과잉치로서 그 중 한개는 영구치와 융합된 경우를 보고하는 바이다.

• 생물정신의학
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• 제22권1호
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• pp.14-19
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• 2015

Objectives The purpose of this study is to find the cephalometric variables which are significantly correlated with the apnea-hypopnea index (AHI) in suspected Korean obstructive sleep apnea (OSA) patients. Methods We examined lateral cephalogram and attended-full night laboratory polysomnography of the 40 participants who complained of OSA symptoms. The correlation analysis was conducted to find the cephalometric variables which are significantly correlated with the AHI. Results The correlation analysis showed that the higher AHI was associated with the longer distance between hyoid and mandibular plane (p = 0.023), the longer distance between C3 and hyoid (p = 0.014), the longer tongue length (p = 0.003), the larger inferior tongue area (p = 0.008), the larger anterior displacement of the hyoid bone (p = 0.024), the longer distance between posterior nasal spine and the tip of the soft palate (p = 0.021), and the larger cross-sectional area of soft palate (p = 0.001) of cephalogram in erect position. The higher AHI was correlated with the longer distance between hyoid and mandibular plane (p = 0.008), the longer tongue length (p = 0.037), the larger inferior tongue area (p = 0.013), the thicker uvula (p = 0.004), the longer distance between retrognathion and hyoid (p = 0.025), and larger cross-sectional area of soft palate (p = 0.001) of cephalogram in supine position. Conclusions The present preliminary results showed the candidate measurements of cephalogram which are significantly correlated with the AHI in suspected OSA.

• 대한전자공학회논문지
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• 제20권1호
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• pp.63-71
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• 1983

본 논문에서는 디지탈 감산 기법을 이용한 양면 혈관 조영술 영상에서의 대응점 결정을 위하여 조영제 말단 추적 알고리즘을 사용하였고, 이 대응점 정보로부터 혈관의 3차원 영상을 재구성하는 과정을 확립하였으며, 개를 이용한 실험 결과도 포함되어 있다. 저자들에 의해 개발된 본 방법의 정확성을 입증하기 위해 사각에서 잡은 혈관 조영상과 계산을 통해 재구성된 영상을 비교하여 좋은 결과를 얻었다. 본 논문에서는 3가지의 새로운 알고리즘을 개발, 또는 응용하였는바, 첫째는, 순차적인 영상에서 조영제의 말단은 어느 투영면에서도 동일한 형태를 갖게 되므로, 상호 상관 계수의 접합법을 이용하여 조영제 말단을 추적해 가는 알고리즘이고, 둘째는, 기준좌표계에서 시선좌표계로의 전환을 4×4행렬 하나로 표시한 단순화 투시 변환 행렬의 구성이며, 셋째는, 조영제 말단 추적법이 적용될 수 없는 작은 혈관 영상에서의 대응점 확립을 위한 보조알고리즘의 적용이 그것이다. 또한 본 방법은 3차원 공간상에서의 조영제 말단 이동거리에 대한 정보로부터 혈류속도의 측정에도 이용될 수 있다.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제14권4호
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• pp.295-304
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• 1992

The author investigated the 162 patients with the condylar fractres of the mandible who were admitted in Dept. of Oral and Maxillofacial Surgery, Hospital of Chosun Dental School from January 1985 to September 1992 clinically, including fracture incidennce, age and sex of the patients, causes of injures, associated injures, treatments and complications and obtained the following results. 1. Of the 449 patients with mandibular fractures, 162patients suffered condylar fractures(36.1%). 2. Of the 162 patients, males with condylar fractures were 128 patients, by a ratio of 3.8 : 1. 3. The most frequently affected age group was the third decade(32.7%). 4. Falls were ranked as the predominant cause(50.6%), followed by traffic accident(27.8%) and violence (16.0%). 5. The incidence of single condylar fractures was 28% and symphysis fractures were the most commomest of the concomittant injuries(60%). 6. The subcondylar fractures occurred most frequently(41.6%) and anteromedial displacement of the condylar fragments occurred most frequently(45.4%) 7. Of the all condylar fracture patients, children under 15 of age comprized 31 patients(19.1%) and condylar head fractures occurred most frequently at those children. 8. Of the managetments in condylar fractures, open reduction was 52.5% and remainder were closed reduction(47.5%). 9. Complications ensured such as TMJ ankylosis, limitation of mouth opening and mandibular movements, TMJ dysfunction, and anterior open bite.

• Clinics in Shoulder and Elbow
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• 제1권2호
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• pp.167-174
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• 1998

Since the first description by Cotton, there have been sporadic reports about the inferior subluxation of the shoulder. Nevertheless there is still a lack of consensus regarding the mechanism of occurrence, evolution and treatment. We have experienced six cases of inferior sublusation(five cases after trauma and one case after surgery) which resolved over time. Analysis of the clinical informations including serial radiographs, data from clinical examination and electromyography(EMG) revealed the following results. All the five post-traumatic inferior subluxations were noted in women with an average age of 59 years after direct trauma resulting in fracture of the proxiaml hrnerus(4) or clavicle(1), of which nerve injury was proven by EMG in three. One case occurred after Bankart repair by stretch injury to the axillary nerve. The presenting symptom was unusually severe pain on passive motion. Absence of anterior or posterior displacement wasl confirmed by radiographs. All the cases seemed to have delayed onset of subluxation except one. The subluxed hu.meral head was concentrically reduced at an average 11 weeks(range 3-23 weeks) from the supposed time of occurrence and the acromiohumeral interval measUred on the standing anteroposterior radiographs decreased to 9.4 mm ftom 23 mm. Improvement of pain paralled the reduction. In conclusion, the most common cause of transient inferior subluxation was nerve injury in ou~ series and the prognosis was excellent, however protraction of recovery or leaving permanent subluxation would be possible if .the injured nerve is unrecoverable.