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김효석,이난영,이상호,오유향 大韓小兒齒科學會 2005 大韓小兒齒科學會誌 Vol.32 No.3
본 연구는 복합레진 중합 시 발생되는 중합수축이 C-factor에 의해 어떻게 영향 받는지 그리고 적층충전이 중합수축에 어떻게 영향을 미치는지 알아보고자 시행되었다. 세 가지 다른 깊이의 시편을 비교하였으며, 충전방법에 따른 비교를 위해 5가지 다른 충전방법에 따른 수축응력을 스트레인 게이지 (Strain guage)를 사용하여 측정하였다. 이상의 실험을 통해 얻은 결과는 다음과 같다. 1. 와동깊이에 따른 수축응력을 측정한 결과 2mm와 3mm 시편에서는 800초 후 수축응력이 2.18±0.23MPa과 2.38±0.07MPa로 유의한 차이가 없었다(P>0.05). 2. 4mm 시편에서 800초 후 수축응력은 1.99±0.24MPa로 가장 낮은 수축응력을 보였다(P<0.05). 3. 중합정도를 확인하기 위한 미세경도 실험결과 2mm와 3mm 시편에서는 상면과 하면의 미세경도 차이가 20% 내외로 양호한 중합상태를 보여주었으나, 4mm 시편에서는 상면과 하면의 미세경도가 현저한 차이를 보여 불완전한 중합이 이루어졌음을 알 수 있었다(P<0.05). 4. 충전방식에 따른 수축력의 차이를 비교한 결과 flowable resin을 이장하고 bulk로 충전한 제 5군에서 가장 낮은 수축응력을 보였으며, 제1군(bulk충전)과 4군(oblique 적층충전)이 유사한 정도의 수축응력을 보였고, horizontal과 vertical하게 적층충전한 제2군과 3군에서 가장 큰 수축응력이 관찰되었다(P<0.05). The aim of this study was to investigate the relationship between the C-factor and shrinkage strain values of composite resin and examine the strain values in different incremental filling techniques. The strain gauge method was used for measurement of polymerization shrinkge strain. Experiment was divided two step. In a first experiment, we compared with strain value in three different depth (2mm, 3mm, 4mm) and microhardness of each samples after 24hours were measured. In a second experiment, we examined the strain values in five different filling techniques(Group 1: bulk filling, Group 2: oblique incremental filling, Group 3: horizontal incremental filling, Group 4: vertical incremental filling, Group 5: lining of flowable resin and bulk filling) The results of the present study can be summarized as follows: 1. Composite resin in acrylic molds showed the initial expansion at the early phase of polymerization. 2. Contraction stress was not revealed significant difference between depth of 2mm and 3mm(P>0.05). 3. Contraction stress in sample of 4mm was showed the lowest value(P<0.05). 4. Microhardness of specimen was revealed more difference between upper and lower surface in depth of 4mm than 2 and 3mm(P<0.05). 5. Lining of flowable resin and bulk filling (Group 5) was showed the lowest contraction stress, Group 2 and 3 was showed the highest contraction stress(P<0.05). On the basis above results, the stress that result from the polymerization shrinkage, when incremental curing techniques are used, showed that there is no advantage in incremental placement and curing.
FCT 9 : Bleomycin intralesional injection for ganglion cysts
( Hyang Suk You ),( Gun Wook Kim ),( Hyun Ho Cho ),( Won Jeong Kim ),( Je Ho Mun ),( Margaret Song ),( Hyun Chang Ko ),( Byung Soo Kim ),( Moon Bum Kim ),( Hoon Soo Kim ) 대한피부과학회 2014 대한피부과학회 학술발표대회집 Vol.66 No.1
There are various options for treating a ganglion cyst such as aspiration, intralesional sclerotherapy and surgery. However, the treatment of ganglion cysts including surgery have generally shown increased rates of recurrence. Historically, various sclerosing agents including OK-432 and tetradecyl disulfate had been tried for treatment of ganglion cyst. Bleomycin has an cytotoxic antitumor and sclerotic activity which may be associated with inhibition of DNA synthesis. To our knowledge, there was no published report to assess the therapeutic effect of bleomycin for ganglion cyst. So, we had treated the four patients with ganglion cyst using sclerotic effects of bleomycin. In this procedure, the cyst was punctured and aspirated before sclerotherapy. All patients showed satisfactory response and no recurrence during a mean follow-up period of 8.5 months. And no serious complications such as toxic hematologic effect and pulmonary fibrosis and/or hypertension were observed after bleomycin intralesional injection. Therefore, we suggest that bleomycin intralesional injection can be effective and safe therapeutic option of ganglion cyst, decreasing the need for invasive surgery.
P186 Clinical and histological differences between volar and non-volar poromas
( Hyang-suk You ),( Dae-lyong Ha ),( Hyunju Jin ),( Woo-haing Shim ),( Jeong-min Kim ),( Gun-wook Kim ),( Hoon-soo Kim ),( Hyun-chang Ko ),( Byung-soo Kim ),( Moon-bum Kim ) 대한피부과학회 2016 대한피부과학회 학술발표대회집 Vol.68 No.2
<div style="display:none">fiogf49gjkf0d</div><div style="display:none">fiogf49gjkf0d</div><div style="display:none">fiogf49gjkf0d</div><div style="display:none">fiogf49gjkf0d</div><div style="display:none">fiogf49gjkf0d</div><div style="display:none">fiogf49gjkf0d</div><div style="display:none">fiogf49gjkf0d</div> Background: Poroma is a benign adnexal neoplasm that occurs most often on non-hairy and acral volar skin. Dermatologists can have difficulty to make correct diagnosis when poroma occurred on non-volar regions because their clinical presentation might be unusual. Objectives: This study aimed to investigate the clinical and histological differences between volar (acral and typical) and non-volar (mostly non-acral and atypical) poromas. Methods: We retrospectively reviewed medical records, clinical and dermoscopic photos, and histopathologic slides of 37 patients diagnosed with poroma by skin biopsy in the Pusan National University Hospital (Busan and Yangsan) over a 15 year period (2002-2016). Results: Among 37 patients, 19 (51.4%) were volar and 18 (48.6%) were non-volar poromas. The most common site of involvement was plantar surface, while there was no involvement in palmar surface. Other sites of involvement included lower extremities in 29.7% (n=11), face in 5.4% (n=2), scalp in 5.4% (n=2), abdomen in 5.4% (n=2), and back in 2.7% (n=1). The pigmented poromas frequently occurred in non-acral region rather than acral region. Conclusion: Though the sample size of this study can be small, to our knowledge, this was the first study investigating clinical and histopathologic difference of poromas with respect to location. And, the result of this study could be helpful for dermatologits when encounting volar and non-volar poromas.
Letters to the Editor : The Usefulness of Dermoscopy for Detection of Subungual White Foreign Bodies
( Hyang Suk You ),( Gun Wook Kim ),( Won Jeong Kim ),( Je Ho Mun ),( Margaret Song ),( Hoon Soo Kim ),( Hyun Chang Ko ),( Byung Soo Kim ),( Moon Bum Kim ) 대한피부과학회 2016 Annals of Dermatology Vol.28 No.1
Dermatoses of the Glans Penis in Korea: A 10-Year Single Center Experience
( Hyang Suk You ),( Gun Wook Kim ),( Won Jeong Kim ),( Je Ho Mun ),( Margaret Song ),( Hoon Soo Kim ),( Hyun Chang Ko ),( Byung Soo Kim ),( Moon Bum Kim ) 대한피부과학회 2016 Annals of Dermatology Vol.28 No.1
Background: A variety of infectious, inflammatory, and neoplastic dermatoses can develop on the glans penis, and definitive diagnosis in such cases may be difficult owing to their non-specific symptoms and clinical appearance. Furthermore, data on dermatoses of the glans penis in Korea are limited. Objective: In the present study, we aimed to determine the prevalence of dermatoses of the glans penis in Korea and provide clinical data to assist in making an accurate diagnosis. Methods: We retrospectively reviewed the medical records, clinical photographs, and histologic slides of 65 patients with dermatoses of the glans penis that visited the Pusan National University Hospital between January 2004 and August 2013. Results: Twenty-six types of dermatoses were identified: inflammatory dermatosis was the most common (38/65, 58. 5%), followed by infectious (13/65, 20. 0%), neoplastic (10/65, 15. 4%), and other dermatoses (4/65, 6. 2%). The most common dermatosis of the glans penis was seborrheic dermatitis, followed by lichen planus, herpes progenitalis, condyloma accuminatum, erythroplasia of Queyrat, Zoon s balanitis, and psoriasis. In the topographic analysis, the most common type of dermatosis was dermatoses that localized to the glans penis (39/65, 60. 0%), followed by dermatoses involving the extra-genitalia and glans penis (22/65, 33. 9%), and the genitalia (glans penis plus other genital areas) (4/65, 6. 2%). Conclusion: This study shows the usefulness of a topographic approach in the diagnosis of dermatoses of the glans penis in Korea. The findings could be used as baseline data for establishing an accurate diagnosis in Koreans.
P263 : Dermatoses of the glans penis and prepuce: single centre experience for 10 years
( Hyang Suk You ),( Hyun Ho Cho ),( Won Jeong Kim ),( Je Ho Mun ),( Margaret Song ),( Hoon Soo Kim ),( Hyun Chang Ko ),( Byung Soo Kim ),( Moon Bum Kim ) 대한피부과학회 2013 대한피부과학회 학술발표대회집 Vol.65 No.2
Background: In the diagnosis of skin diseases, topographic approach is very meaningful. Though a variety of infectious, inflammatory and neoplastic dermatoses can occur in glans and prepuce, establishing the diagnosis may be difficult because their symptoms and clinical appearance can be nonspecific. Furthermore, there has been only limited data for Korean dematoses of glans penis and prepuce. Objectives: The aim of this study was to make a baseline data for Korean dematoses of glans penis and prepuce. Methods: We retrospectively reviewed the medical records, clinical photos and histologic slides of 67 patients with dermatoses of glans and prepuce, who had visited Pusan National University Hospital from January 2004 to August 2013. Results: All patients were circumcised, except one who was infected with chancroid. Skin lesions were confined to only glans in 32 patients (47.8%). There were various kinds of skin diseases (26 diseases). Most frequently diagnosed dermatoses of glans penis and prepuce were seborrheic dermatitis (19.4%), lichen planus (17.9%), herpes progenitalis (5.9%), syphilis (5.9%), condyloma accuminatum (5.9%), erythroplasia of Queyrat (4.5%), Zoon`s balanitis (4.5%), and psoriasis (4.5%). Conclusion: The result of this study could be used as baseline data for Korean dematoses of glans penis and prepuce, and could be useful for topographic approach in Korean dematoses of glans penis and prepuce.