• Imaging Science in Dentistry
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• 제50권2호
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• pp.141-151
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• 2020

Purpose: This study aimed to quantify the influence of tooth position within the field-of-view (FOV) on cone-beam computed tomography (CBCT) imaging artifacts' intensity when assessing teeth restored with various intracanal materials. Materials and Methods: Seventy single-rooted teeth were divided into 7 groups (10 teeth per group): NiCr post (NC), AgPd post (AP), metal core fiberglass post (MCFG), fiberglass post (FG), anatomical fiberglass post (AFG), fiberglass post cemented with core build-up cement (FGCo), and anatomical fiberglass post cemented with core build-up cement (AFGCo). All posts were cemented using a regular dual-curing resin cement (Allcem), except FGCo and AFGCo which were cemented with a core build-up dual-curing resin cement (AllcemCore). Each tooth was scanned on a CS9000 in 5 positions within the FOV: a central position, anterior horizontal peripheral, peripheral superior, peripheral inferior, and posterior horizontal peripheral position. Hyperdense, hypodense, remaining teeth areas and ROI areas were quantitatively analyzed using ImageJ software. Results: Posterior horizontal peripheral position increased the intensity of artifacts on FGCo and AFGCo post groups (P<0.05), and specifically the hypodense artifact intensity on FG and AFG post groups (P<0.05). NC and AP groups presented greater intensity of artifacts than any other post groups(P<0.05). Conclusion: Artifact intensity increases in the presence of high atomic number materials and when the object is not centered within the FOV. The impact of positioning within the FOV on artifact was greater for fiberglass posts cemented with core build-up dual-curing cement than for metal posts and fiberglass posts cemented with regular dual-curing cement.

• Journal of Acupuncture Research
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• 제26권6호
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• pp.179-186
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• 2009

Objectives : This study was to compare the effect of acupuncture on peripheral facial nerve paralysis between affected part, and unaffected part in the incipient stage. Methods : We investigated 32 cases of patient with peripheral facial nerve paralysis, and divided into two groups. One group was treated by acupuncture on the affected part, and the other was treated by acupuncture on the unaffected part. Both groups were evaluated by Yanagihara's unweighted grading system and House-Backmann grade before treatment, and in every one week and after treatment. Results & Conclusion : 1. The number of female was more than that of male and the number of left side was more than that of right side in distribution of lesion. Post ear pain was the highest related symptom at onset, Unknown was a major cause of peripheral facial nerve paralysis in distribution of cause. 2. Yanagihara's unweighted grading system and House-Backmann grade score between two groups were not statistically significant in every one week. 3. Yanagihara's unweighted grading system and House-Backmann grade score between two groups were not statistically significant in before treatment and final.

• 재활복지공학회논문지
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• 제10권4호
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• pp.279-285
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• 2016

신경보철 의수를 제어하기 위해서는 말초 신경신호를 측정하고 분석함으로써 사용자의 동작의도를 인식해야 한다. 본 논문에서는 다채널 신경전극 어레이, 전극 삽입 장치, 신경신호 증폭기로 구성된 말초 신경신호 측정 시스템을 제안한다. 마취상태에서 전극 삽입 장치를 이용하여 16 채널의 신경전극 어레이를 백서의 좌골신경에 안정적으로 삽입하였다. 수동적 관절 운동을 유도하거나 기계적 피부 자극을 인가하였을 때, 신경신호 증폭기를 통해 근육 또는 피부 감각 신경신호가 측정됨을 확인하였다. 또한, 개별 신경 단위를 분리하기 위해 활동전위 분류방법을 제안한다. 근육의 내부 수용기들은 근방추와 골지건 기관 수용기로 구분되었으며, 피부의 외부 수용기들은 완만적응과 급속적응 수용기로 분리되었다. 이와 같은 실험결과는 제안한 방법이 신경보철 시스템에서 말초 신경신호의 측정과 분석에 적용될 수 있음을 보였다.

• Journal of Acupuncture Research
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• 제29권4호
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• pp.35-42
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• 2012

Objectives : This study was to observe clinical application of auto-microneedle therapy system (AMTS) in patients with peripheral facial paralysis. Methods : 27 peripheral facial paralysis patients were observed after taking AMTS at Facial Palsy Center, Kyung Hee University Oriental Medicine Hospital from March 1, 2011 to January 9, 2012. We assessed the symptoms of facial paralysis with Yanagihara unweighted grading system, Sunnybrook facial grading system(SBGS) and facial disability index(FDI), and observed adverse events and total safety of the treatment. Results : The scores of facial palsy scales increased after AMTS in Yanagihara grading system and Sunnybrook facial grading system. AMTS-related adverse events were mild pain(5.9%) and fatigue(3.5%), which needed no extra treatment. The total safety evaluation was between 'safe' and 'nearly safe' level. There were no other serious adverse events. In addition, patients were satisfied with subjective improvement including facial tingling and numbness. Conclusions : AMTS can be applied as an adjunctive treatment for patients with peripheral facial paralysis due to its safety and clinical usefulness. It is easier to stimulate wide skin area in a short time. Further clinical research is required to investigate the effectiveness of ATMS in a more rigorous RCTs.

• Journal of Acupuncture Research
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• 제26권5호
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• pp.95-103
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• 2009

Objectives : This study was designed to evaluate the effect of treatment Acute peripheral facial paralysis patient with postauricular pain by Bee Venom Pharmacopuncture Methods : This report have been observed among thirty patients with peripheral facial paralysis patient with postauricular pain who admitted to oriental medicine hospital with Daejeon university During 11-01-2008 to 08-31-2009. These patients were diveided into two groups; One was control group that was treated general oriental medical treatment(Group I) and The other was treated Bee Venom Pharmacopuncture in the posterior ear with general oriental medical treatment. (Group II) Results : 1. Group II was more effective than Group I in the VAS score after 1st, 2nd, 3rd Bee Venom Pharmacopuncture treatmenton posterior ear about postauricular pain. 2. In Group II compared with Group I, postauricular pain duration was reduced. 3. As a result of evaluation by using Yanagihara score, they were not significant score within two groups after final treament. Conclusions : Bee Venom Phannacopuncture on peripheral facial paralysis patient with postauricular pain in the posterior ear was more effective in reducing the pain.

• Journal of Acupuncture Research
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• 제26권4호
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• pp.29-37
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• 2009

Objectives : This study was to investigate the effectiveness of Bee Venom Pharmacopuncture complex therapy on peripheral facial paralysis. Methods : We investigated 30 cases of patients with Peripheral Facial Paralysis, and devided patients into two groups : We treated one group by complex oriental medical treatment with Bee Venom Pharmacopuncture therapy, and did the other group by complex oriental medical treatment without Bee Venom pharmacopuncture therapy. To investigate the effectiveness of treatment applied for two groups, we used Gross Grading System of House-Brackmann, Yanagihara's Unweighed Grading System at baseline, 3 weeks and final. Results : 1. Male, Female is same ratio in distribution of sex, the number of left side is more than that of right side in distribution of lesion, the average age is 49.33. 2. Pain back of the ear showed the highest frequency among Bell's palsy related symptoms at onset, the overwork was a major cause of Bell's palsy in distribution of cause. 3. As a result of evaluation by using Gross Grading System of House-Brackmann, Yanagihara's Unweighed Grading System, treatment score after 3weeks was marked higher than that before treatment and treatment score after final treatment was also marked higher than that after 3weeks within each group. 4. After final treatment, Bee Venom Pharmacopuncture therapy group showed signficant difference on Gross Grading System of House-Brackmann, Yanagihara's Unweighed Grading System compared with Acupuncture therapy group. Conclusions : Bee Venom Pharmacopuncture therapy can be available for relieving symptoms related with peripheral facial paralysis.

• Imaging Science in Dentistry
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• 제50권1호
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• pp.37-43
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• 2020

Purpose: The purpose of this study was to evaluate the accuracy of linear measurements in the horizontal and vertical dimensions based on object position and slice inclination in cone-beam computed tomography (CBCT) images. Materials and Methods: Ten dry sheep hemi-mandibles, each with 4 sites (incisor, canine, premolar, and molar), were evaluated when either centrally or peripherally positioned within the field of view (FOV) with the image slices subjected to either oblique or orthogonal inclinations. Four types of images were created of each region: central/cross-sectional, central/coronal, peripheral/cross-sectional, and peripheral/coronal. The horizontal and vertical dimensions were measured for each region of each image type. Direct measurements of each region were obtained using a digital caliper in both horizontal and vertical dimensions. CBCT and direct measurements were compared using the Bland-Altman plot method. P values <0.05 were considered to indicate statistical significance. Results: The buccolingual dimension of the incisor and premolar areas and the height of the incisor, canine, and molar areas showed statistically significant differences on the peripheral/coronal images compared to the direct measurements (P<0.05). Molar area height in the central/coronal slices also differed significantly from the direct measurements (P<0.05). Cross-sectional images of either the central or peripheral position had no marked difference from the gold-standard values, indicating sufficient accuracy. Conclusion: Peripheral object positioning within the FOV in combination with applying an orthogonal inclination to the slices resulted in significant inaccuracies in the horizontal and vertical measurements. The most undesirable effect was observed in the molar area and the vertical dimension.

• 한국의학물리학회지:의학물리
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• 제8권1호
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• pp.75-82
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• 1997

인체의 생리기관의 운동은 매우 복잡하고 불규칙적인 운동을 보이고 있다. 특히 말초 혈관의 운동은 매우 민감하고 복잡한 운동특성을 보이고 있다. 그중에서도 당 (glucose)에 의한 운동은 매우 민감한 변화의 운동을 반응한다. 이런 운동을 분석하기에는 기존의 선형적인 분석방법으로 복잡한 혈류운동을 분석하고 예측하기에는 많은 문제점을 가지고 있다. 그래서 비선형적 운동계의 분석방법인 카오스이론의 시계열분석방법으로 분석하는 것이 적합하다. 이런 맥락으로 본 연구는 당의 주입에 의한 토끼의 말초혈류량의 스칼라적 데이터를 획득하여 시계열분석방법으로 다차원의 벡터로 재정의하여 말초혈관의 혈류운동이 카오스적 운동임을 재확인하고 비선형적분석방법의 적합성을 확인하고자 하였다. 그 결과 당 주입에 따른 혈당치의 변화에 따라 기존의 주파수분석 및 평균치분석에서 차이가 나타나지 않았지만 비선형적분석방법으로 분석한 결과 그 차이를 확인할수 있었고, 말초 혈류의운동이 카오스적현상을 보임을 확인하였다.

• 대한약침학회지
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• 제15권4호
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• pp.15-24
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• 2012

Objectives: The aim of this study is to evaluate the efficacy and the safety of Sanyak pharmacopuncture therapy for the treatment of peripheral facial paralysis patients. Methods: This study was a retrospective investigation of a total of 70 patients who were inpatients of the Oriental Hospital of Daejeon University between January 1, 2011, and May 31, 2012, and who were diagnosed as having peripheral facial paralysis by physical examination, the patients received three different interventions. Eleven (11) patients were treated with acupuncture and alcohol Dioscorea rhizoma pharmacopuncture (ADG), 25 patients with acupuncture and distillation Dioscorea rhizoma pharmacopuncture (DDG), and 34 patients with acupuncture and non-Dioscorea rhizoma pharmacopuncture (NDG). The resulting data were analyzed. Results: The changed H-B grades indicated significant improvements in all three groups, and the ADG and the DDG groups showed significant results after two weeks of treatment when compared to the NDG group. The changed y-Scores indicated significant improvements in all three groups, and the ADG group showed significant results after 10 and 15 days of treatment when compared to the NDG group. Dioscorea rhizoma pharmacopuncture may be safe for the human body because in most cases, the only abnormal finding was the pain could by the application of pharmacopuncture. Conclusions: The results of this study suggest that Oriental medical treatment with dioscoreae Rhizoma (Sanyak) pharmacopuncture complex therapy may be effective and safe in patient with peripheral facial paralysis.

• 생물정신의학
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• 제4권1호
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• pp.108-115
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• 1997

The alcoholic neuropathies developed in approximately 34% of chronic alcoholics and the sexual dysfunction had been experienced in 8-54% of male alcoholics(Schiavi 1990). The aims of this study were to identify the prevalence of subclinical polyneuropathies and sexual disorders in alcohol dependence, and to evaluate the association between them. The nerve conduction velocity(NCV), electromyography(EMG), and pudendal somatosensory evoked potentials(SEPs) were tested for the male alcoholics(N=34) and controls(N=17 for NCV & EMG, N=25 for pudendal SEPs). The pudendal SEPs were measured by the following procedures, in which we stimulated the dorsal nerve of penis attached by the ring electrode(stimulus intensity, three times of threshold : stimulus rate, 1-4.7Hz : stimulus duration, 0.1 or 0.2msec), and recorded at the scalp(active electrode, 2cm behind Cz : reference electrode, Fz). The NCV and EMG detected signs of peripheral neuropathies in 79.4% of alcoholics. Among the alcoholics, 64.7% were abnormal on the pudendal SEPs. Among the alcoholics who revealed abnormality on EMG and NCV, 81.4% were abnormal on the pudendal SEPs, in which 51.9% were not responded. The P1 latencies of pudendal SEPs on neuropathic alcoholics were significantly delayed(p<0.05) than non-neuropathic alcoholics. There was a relative correlation between peripheral neuropathies and sexual disorders in the alcoholics. The prevalence of subclinical neuropathies and sexual disorders seemed to be much higher in alcohol dependence than expectation, and these two problems were relatively correlated, and our results suggested that the peripheral polyneuropathies were one of the prerequisites of sexual disorders.