방울토마토중 Dichlofluanid 및 Iprodione의 생산단계별 잔류농약 경시변화

최규일,성기용,정태균,이주환,허장현,고광용,이규승 한국환경농학회 2002 한국환경농학회지 Vol.21 No.4

방울토마토의 생산단계에서의 잔류허용기준 설정과 수확후 저장기간중 경시변화 및 세척에 의한 잔류농약의 감소양상을 파악하였다. 해당약제를 안전사용기준의 기준량 및 배량을 각각 시설재배 포장에서 살포후 10일간 잔류양상을 조사하였고, 실온 및 냉장조건 하에서의 저장실험 및 세척에 따른 전류농약의 잔소량을 파악하여 생산단계부터, 출하, 저장, 소비단계까지의 잔류량을 예측할 수 있는 모델개발을 위한 자료로 이용하고자 연구를 수행하였다. Dichlofluanid와 iprodione은 포장조건에서 반감일수가 기준량 2.2, 3.3일 이었으며, 배량은 3.5, 5.4일로 나타났다. 저장조건하에서의 약제별 반감기는 포장조건보다 잔류량의 감소속도가 느린 것으로 나타나 반감일수가 증가하였고, 세척방법에 의한 잔류농약의 감소량을 조사한 결과 세제 사용시의 평균제거율은 dichlofluanid는 73.7%, iprodione은 64.3%로 나타났고, tap-water 사용시에는 dichlofluanid 73.5%, iprodione 63.5%로 나타났다. 이러한 결과는 작물의 생산단계에서 구한 합리적인 희귀식을 이용하여 잔류농약의 경시변화를 파악하고, 저장 및 세척과정을 거쳐 최종 소비단계에서의 잔류농약의 수준을 평가할 수 있었다. We studied the residual patterns of two fungicides, dichlofluanid and iprodione, in cherry tomato greenhouse after applying with the recommended and double dose. Also, the degradation patterns during storage periods of up to ten days were compared between at room temperature (20℃) and at cold temperature (4℃). Removal rates of fungicides by washing with tap-water and detergent solution (0.1%, 0.2%) were measured. Half-lives of dichlofluanid and iprodione in greenhouse cherrytomato were 2.2~3.5 and 3.3~5.4 days, respectively. During the storage period, the residues were dissipated more slow. Removal rates were 62.8~80.3% by tap-water, 60.4~83.1% by 0.1% detergent solution, and 65.3~77.6% by 0.2% detergent solution. So, we can predict of terminal residues from cultivation period to marketing, storage and consuming.

Nd: YAG 레이저 조사가 Clacium Fluoride 형성 및 치아 내산성에 미치는 영향

최병재,김성오,손흥규,이제호,박광균 大韓小兒齒科學會 1999 大韓小兒齒科學會誌 Vol.26 No.2

불소도포시 주로 형성되는 calcium fluoride는 구강내 환경에서 pH에 의해 조절되는 불소의 저장고 역할을 하여 치아우식 예방에 있어서 중요한 역할을 하는 것으로 알려져 있다. 따라서 불소도포의 우식예방 효과는 calcium fluoride를 얼마나 많이 형성시켜 오래 지속시키는 가에 달려있다. 이에 치아 내산성 증가에 효과 있다고 알려진 Nd:YAG 레이저 조사가 calcium fluoride형성 및 치아 내산성에 미치는 영향에 대해 알아보기 위해서 실험을 시행하였다. 소의 영구전치에서 276개의 시편을 제작하여 아무런 처치를 하지 않은 군을 대조군으로 하고 1.23% acidulated phosphate fluoride (APF) 5분, 30분 도포 및 Nd:YAG 레이저 조사에너지 밀도 20J/㎠,40J/㎠의 조건에 따라 불소 도포군, 레이저 조사군, 불소 도포후 레이저 조사군, 레이저 조사후 불소 도포군으로 분류하였다. 불소도포를 시행한 경우 이를 다시 KOH 처리 여부에 따라 나누어 23개의 실험조건을 만들었다. 각 실험조건에 12개의 시편을 배정하고 이중 10개의 시편은 불소 및 무기인 측정에, 나머지 2개의 시편은 표면 관찰에 사용하였다. KOH 비처지군에서 0.1N HCIO4로 enamel biopsy를 시행하여 탈회 법랑질의 불소농도 및 탈회깊이를 측정하였으며, KOH 처치군에서는 1 M KOH로 24시간 처리하여 calcium fluoride를 정량 후 enamel biopsy를 시행하였다. 실험결과 얻어진 자료 및 주사 전자현미경 관찰 소견을 비교하여 다음의 결과를 얻었다. 1. KOH 비처치군에서 탈회된 법랑질의 불소농도는 레이저조사 후 불소도포시 레이저 에너지 밀도 증가에 따라 증가되는 경향을 보였다. 2. KOH 비처치군에서 법랑질 탈회깊이는 불소를 5분 도포후 레이저 20J/㎠를 조사한 경우를 제외하고는 레이저와 불소를 병행하여 처치시 각각을 단독으로 치치시보다 탈회깊이가 작았다 (p<0.05). 3. Calcium fluoride의 양은 레이저의 조사에 의해 유의 있게 증가하지 않았다 (p>0.05). 4. Calcium fluoride 입자는 불소만 도포한 경우에 비해 레이저 조사후 불소도포시 입자크기가 증가되었으며, 불소도포후 레이저 조사시 입자크기의 증가와 함께 일부 융합된 양상을 보였다. 5. KOH 처치군에서 법랑질의 불소농도는 불소를 30분 도포후 레이저를 조사한 경우를 제외하고는 대조군의 불소농도와 유의한 차이가 없었다(p>0.05). 6.KOH 처치군에서 불소와 레이저를 병행한 경우, 불소만 도포한 경우보다 탈횐된 법랑질의 깊이가 작았다 (p<0.05). 7. KOH 비처치군에서 탈회된 법랑질의 불소농도와 탈회깊이의 상관관계 (Spearman correlation coefficient: -0.6281)는 KOH 처치군 (Spearman correlation coefficient: -0.3792)에 비해 높은 음의 상관 관계를 보였고, 동일한 조건으로 불소도포 및 레이저 조사를 시행한 경우에 있어서 KOH 처리 여부에 따른 탈회법랑질 깊이의 유의차가 있는 경우 calcium fluoride의 형성량이 많았다. 이상의 실험결과로 미루어 보아 레이저 조사가 calcium fluoride의 형성량에 영향을 미치지 않았으나 레이저 조사의 영향으로 calcium fluoride의 용해가 감소하는 것으로 판단된다. 또한 불소도포 및 레이저 조사의 병행은 각각을 단독으로 처치한 경우에 비하여 치아 내산성 증가면에서 유리하므로 임상에서 불소도포주기 연장과 같은 유용한 결과를 얻을 수 있을 것으로 생각된다. Calcium fluoride. created by topical fluoride application, is the reservoir for fluoride ion regulated by pH in the oral environment. Therefore, the amount and the maintenance of calcium fluoride have an important role in preventing dental caries. The aim of this study is to evaluate the effect of Nd:YAG laser irradiaiton on the generation of calcium fluoride and the acid resistance of tooth enamel. The bovine anterior permanent teeth were prepared (n=276), and divided into following groups: no treatment(control), fluoride application alone, laser irradiation alone, laser irradiation after fluoride application, and fluoride application after laser irradiation. And each group was subdivided based on the application time of 1.23% acidulated phosphate fluoride (APF) (5 min and 30 min) and the irradiation energy of Nd:YAG laser (20J/㎠ and 40J/㎠). In case of fluoride application, each group was divided according to KOH treatment. Twenty three treatment conditions were made for this experiment and twelve specimens were assigned to each treatment condition. In each treatment condidtion, ten specimens were used for chemical analysis and two specimens were observed under SEM. In groups without treating KOH, fluoride content and the depth of enamel dissolved were measured using enamel biopsy technique. In groups with treating KOH, the amount of calcium fluoride was measured by the treatment with 1 M KOH for 24 hours and enamel biopsy was performed after KOH treatment. The results were analyzed by the fluoride content and the depth of enamel dissolved by enamel biopsy, amount and thickness of calcium fluoride, and the surface structures of enamel. The results are as follows: 1. In groups without treating KOH, the fluoride content of removed enamel showed a positive relationship with the energy density of laser when the laser irradiated before fluoride application. 2. In groups without treating KOH, the depth of enamel dissolved decreased more with the combined laser and fluoride treatment than with laser or fluoride treatment, except for the case of 20J/㎠ laser irradiation after 5 minute fluoride application (p<0.05). 3. The amount of calcium fluoride did not increased by laser treatment with no statistical significance(p>0.05). 4. The particle size of calcium fluoride increased in case of fluoride treatment after laser irradiation, compared with fluoride application alone. In case of laser treatment after fluoride application, the particle size of calcium fluoride increased and some of the particles fused as well. 5. There were no significant differences in the fluoride content of dissolved enamel between groups without treating KOH and control group, except for the case of laser irradiation after treatment of APF for 30 minutes (p>0.05). 6. In groups with treating KOH, depth of removed enamel in the groups of combined treatment with laser and fluoride was shallower than that in fluoride application groups (p<0.05). 7. In groups without treating KOH, the relationship between fluoride content and the depth of enamel dissolved showed more negative (Spearman correlation coefficient: -0.6281)than in groups with treating KOH (Spearman correlation coefficient: -0.3792). The greater amount of calcium fluoride could be found in case where there was a significant differences of the depth of enamel dissolved between groups with and without treating KOH. From these results, it can be concluded that laser seems to be a little effects on the amount of calcium fluoride formation, but has some effect on the lowering the solubility of calicium fluoride. As the combined treatment of laser and fluoride application showed more effective acid-resistant property, more extended recall period for fluoride application can be achieved with this combined treatment in the clinic.

膈下逐瘀湯과 膈下逐瘀湯合四君子湯의 抗癌 및 免疫調節作用에 關한 實驗的 硏究

崔昇勳,安圭錫,文濬典,高光錫 대한동의병리학회 1994 동의생리병리학회지 Vol.9 No.1

연구배경 : 암은 사망의 주요 원인이 되는 질환으로 매년 증가하고 있는 추세이다. 이에 mouse에 암을 유발하여, 약물치료를 시행함으로써 높은 치료효과를 거두는 한약제재를 개발하여 암의 치료에 기여하고 아울러 근본적인 예방치료에 대한 새로운 방법을 제시하고자 함. 방법 : 생쥐에 Sacroma 180을 이식하여 복강암을 유발하고 격하축어탕 및 격하축어탕합사군자탕을 투여하여 생명연장률과 B cell 및 T cell, 혈청항체가, 임파구증식반응, IL-2 생산능 및 자연살해페소의 활성도를 측정하였다. 결과 : 격하축어탕과 격하축어탕합사군자탕은 면역조절작용을 통한 항암효과가 있을 것으로 생각되며, 활혈거어제인 격하축어탕과 보기제인 사군자탕을 합방했을때, 그 효과가 증가되었다. In order to investigate the effects of Gyeokhachukeotang and Gyeokhachukeotang plus Sagunjatang on anti-tumor and immunodulatory reaction to the ICR and C57BL/6 mice which have abdominal tumor after Sarcoma-180 cells were transplanted, the extracts of herbal medicines above mentioned were orally administered to the mice for 21 days to observe the extention of survival duration of the mice, quantitation of T cells and B cells, productivitiy of interleukin-2, lymphocytes transformation, hemagglutinin titer and hemolysin titer and activity of splenic natural killer cells. The results are summarized as follows; 1. In the effect of life extention, the Gyeokhachukeotang-medicated mice group inclined to show extended duration of life, which is of no great significant difference and the mice group medicated with mixture of Gyeokhachukeotang plus Sagunjatang appeared to survive longer than the Gyeokhachukeotang-medicated mice group, which is not meaningful. 2. Considering T cell and B cell content, the Gyeokhachukeotang-medicated mice group had a meaningful increase in B cell (P<0.05) content, and the mice group medicated with the mixture of Gyeokhachukeotang plus Sagunjatang remarkably showed a significant increase in both T cell and B cell (P<0.01). 3. Considering serum antibody titer tended to increase in case of the Gyeokhachukeotang-medicated mice group, which is of no significant difference, while decreasing in case of the mice group medicated with mixture of Gyeokhachukeotang plus Sagunjatang. 4. In lymphocyte transformation marked a significant increase the Gyeokhachukeotang-medicated mice group, marked a significant (P<0.01), and remarkably showed a significant increase the mice group medicated with the mixture of Gyeokhachukeotang plus Sagunjatang (P<0.001). 5. As for the productivity of interleukin-2 and the activity of NK cells, the both tested groups inclined to show an increase or a decrese, but there is no significance.

양성갑상선종물 환자에서 갑사선 호르몬 억제요법과 갑상선 호르몬과 항갑상선제 병합요법의 치료효과 비교

최성남,공병호,배현철,오연상,신순현 중앙대학교 의과대학 의과학연구소 1998 中央醫大誌 Vol.23 No.1

Traditionally, patients with nontoxic benign thyroid nodule has been treated with levothyroxine. The successful treatment of T4 suppressive therapy, however, has been observed in 50 % of patients with thyroid nodules oven though the treatment were continued more than 1 year. The side effects such as osteoporosis, left ventricular hypertrophy has been observed. Therefore, we performed this study to evaluate the efficacy of the new treatment modality (levothyroxine and methimazole combination) in the treatment of thyroid nodule. Study population was 67 patients having nontoxic benign thyroid nodule. Serum TSH, fT4, T3 and thyroid nodular volume were measured at pretreatment and post-treatment periods. The benign thyroid lesion was confirmed by FNAC (fine needle aspiration cytology). The factors can be influenced on therapeutic response were also studied. The patients were divided into two groups. One group had been treated with levothyroxine only and the other with levothyroxine and anthithyroid drug combination. 47 patients had been treated with levothyroxine only. The other 20 patients had received combination therapy with levothyroxine and methimazole. The mean age and sex ratio, pretreatment nodular volume, TSH, fT4 and total T3 level measured at pretreatment and post-treatment had no stastistical difference between two groups. The combination therapy group had been treated for 8.4 ± 2.6 months and T4 suppressive therapy group for 11.1 ± 4.8 months (P=0.03). Pretreatment TSH concentration was 0.99 ± 0.60 μIU/ml in T4 suppressive therapy group, 1.43 ± 1.21 μIU/ml in combination therapy group. (P=0.023) But the value of serum TSH in both groups was in normal range. The responder group was 17 patients and the response rate was 85 % in combination therapy group and 25 and 53 % in T4 suppressive group. In the combination therapy group, the volume reduction was more greater. (71.5% in combination group, 18.1 % in T4 group) In conclusion, combination therapy can reduce treatment duration, enhance therapeutic response rate for the treatment of benign thyroid nodule. The exact mechanism of methimazole on thyroid nodule wan not not clearly known. Perhapse, the influence of methimazole on the transcription factor may be involved Further study in this regard is needed in the future.

제7차 교육과정에 따른 산ㆍ염기 단원의 STS과학 교육에 적합한 CBL 실험 프로그램의 개발

이광필,김동화,최성호,류재정,이무상 慶北大學校 師範大學 科學敎育硏究所 2001 科學敎育硏究誌 Vol.25 No.-

This study developed the 'advanced-supplementary' course experimental program with CBL(Calculator-Based Laboratory) system in conformity with the reform of the 7th science curriculum and applied the CBL experimental program to 'acid-base' chapter of middle-high school. The results of this study shows that a practical use of CBL system as powerful instrument can be applied to experiment program of 'acid-base' chapter in order to causes learner's motivation and enlarge a sphere of inquiry-activity in science.

A-431 세포주의 방사선 및 항암제의 감수성에 관한 실험적 연구

고광준,최은숙,홍성우 大韓口腔顎顔面 放射線學會 1999 Imaging Science in Dentistry Vol.29 No.1

Objectives: The purpose of this study was to aid in the prediction of tumor cell tolerance to radiotherapy and/or chemotherapy. Material and Methods: Human epidermoid carcinoma A-431 cell lines were irradiated by 2, 4, 6, 8, 10Gy at a dose rate of 210cGy/min using Co Irradiator ALDORADO 8 and then were exposed to bleomycin or cisplatin at concentration of 2㎍/ml for 1 hour. The viable cells were determined for each radiation dose and/or each drug at the 4th day and cell surviving curves were obtained using semiautomated MTT assay. Results: The surviving fraction after irradiation of 2Gy was 0.99, and there was not significant difference of surviving fraction in comparison with the control group on A-431 cell line(P>0.05). But there were significant differences of surviving fractions at doses of 4, 6, 8, 10Gy in comparison with the control group(P<0.05). The cytotoxicity of bleomycin or cisplatin was significantly different in comparison with the control group on A-431 cell line (P<0.05). And the cytotoxicity of cisplatin was greater than that of bleomycin on A 431 cell line (P<0.05). There were significant differences of surviving fractions after irradiation of 2, 4, 6, 8, 10Gy with bleomycin or cisplatin in comparison with each group of irradiation only on A-431 cell line(P0.05). There were significant differences of surviving fractions between the groups of irradiation with bleomycin and cisplatin at doses of 2, 4Gy(P<0.05), but there were not significant differences of surviving fractions at doses of 6, 8, 10Gy on A-431 cell line(P>0.05).(J Korean Oral Maxillofac Radiol 1999:29:325-337)

상수 고도처리에서 활성탄 재생기술

손성섭,김진오,최광호 嶺南大學校 環境問題硏究所 1999 環境硏究 Vol.18 No.2

요 약 국내 상수도는 취수원의 90%이상을 지표수에 의존하므로 하천오염에 따른 수원의 수질악화가 불가피하며, 또한 생활수준 향상에 따라 먹는물 수질기준의 강화가 예상되므로 상수고도처리의 도입이 절실한 실정이다. 오존처리와 활성탄 여과는 현재 가장 널리 적용되는 상수고도처리법으로서, 특히 활성탄 여과는 냄새, 맛, 색도 및 난분해성 유기물질을 흡착하는데 효과적이므로 국내 20여개 정수장에서 적용하고 있다. 활성탄 여과지에 사용되는 활성탄은 피흡착물에 의해 포화흡착된 후 신탄으로 교체하거나 재생공정을 거쳐 재사용하며, 재생 방법으로는 열재생, 용매추출, 생물학적 산화, 화학적 산화 등이 있으나 활성탄을 다량 사용하는 수처리에는 열재생법이 가장 경제적인 방법으로 평가된다. 열재생은 가열에 의해 흡착 유기물을 제거하는 것으로 건조, 탄화, 부활의 공정으로 진행되며, 재생설비로는 다단로, 로타리킬른, 유동층로, 이동층로 등을 고려할 수 있다. 국내에서의 활성탄 재생설비는 제당공장, 연구용 및 고도폐수처리 등에서 일부 사용되고 있으며 상수고도처리 분야에서는 국내 몇 개 정수장에 적용하여 시공단계에 있지만 수질오염의 심각성 및 시설의 경제성을 고려할 때 그 수요가 점차적으로 증가될 것으로 예상된다.

BioCube 擔體를 利用한 生物學的 下ㆍ廢水 高度處理 工程

孫聖涉,崔光鎬,任成均,朴喜登,金宣亨 嶺南大學校 環境問題硏究所 1999 環境硏究 Vol.19 No.1

ABSTRACT 下,廢水의 質的안 變化와 함께 水量도 急擊히 增加하여 汚染負荷量이 增加하고 있고, 難分解 性 物質이 커짐에 따라 國內의 경우에도 放流水 水質基準 强化의 일환으로 質素와 燐에 대 한 規制가 施行되고 있으며 이를 處理하기 위한 適切한 工程이 要求되고 있는 실정이다. BioCube를 利用한 下·廢水 처리시스템은 A2/O 基本 工程을 國內實定에 맞게 變形한 工 程으로 暴氣槽에 流動形 微生物 擔體(BioCube)를 10∼30% 投入하여 窒酸化率을 높여 SRT 를 짧게 維持하면서도 下·廢水 內의 有機物 및 窒素와 燐의 安定된 除去가 可能하다. 즉, BioCube를 投入함으로써 Biomass 量을 增價시키고, 浮游成長式과 附着成長式 微生物 工程 의 長點을 組合함으로써 負荷變動d 강하고 겨울철에도 원할한 窒酸化를 誘導하며 追加的인 敷地의 增設없이 간단한 改補修를 통하여 榮養鹽類 除去를 極大化할 수 있도록 開發되었다. 擔體工程의 경우 微生物 成長에 따른 脫離現狀, 擔體의 閉寨 등이 重要한 問題點으로서, 이 를 解決학위해 BioCube는 廢水와의 流動을 통한 摩擦 및 氣孔性 確保를 통해 擔體내 微生 物 成長과 外部로의 擴散이 效率的으로 일어날 수 있도록 하였다. BioCube는 旣存製品에 비해 物性 및 微生物 活性度가 높으며, 目的에 따라 活性炭 또는 微生物을 固定化할 수 있는 多孔質의 폴리우레탄 材質로서 高農度의 MLSS(10,000-15,000 mg/L)를 內部에 固定하며 懸濁液 中의 微生物과 함께 暴氣槽내에서 流動한다.

文化變遷에 따른 精神疾患 槪念 및 治療法에 관한 見解調査

金光日,元鎬澤,李正浩,申榮宇,金允姬,朴宗學,崔圭珙,洪性彦 大韓神經精神醫學會 1975 신경정신의학 Vol.14 No.4

Opinion about the cause and desirable way of treatment of mental illnesses, psychoses and epilepsy, were collected from 379 rural peoples and 201 peoples in Seoul city by individual informal interviews. Purposefully, the interview were limited to old people over 50 year of age who were resident in the rural areas with traditional way of life, and to the relatively civilized peoples who had been resident in Seoul for the past ten years. The results from the two sources were compared and discussed from the point view of acculturation. It was obvious that the concepts in cause and treatment of mental illnesses was shifted from the primitive orientation to the modern one. Shamanistic and primitive medicinal concepts were almost neglected in Seoul sample, whereas the two concepts were definetely high as 53.2% for psychoses, 88.3% for epilepsy in rural sample. Seoul sample unexpectedly revealed high psychological orientation to the causs of psychoses and even to the cause of epilepsy as 88.5% and 17.6% each. On the other, rural sample manifested the psychological orientation to the cause psychoses and epilepsy as 46.8% and 3.4% respectively. Way of treatment was also evidently changed; supernatural and primitive medicinal treatments for the mental illnesses were scarcely adviced by Seoul people, whereas the two treatments were adviced by the rural people in 44.5% and 18.6% each for the psychoses, and 4.4% and 63.4% for the epilepsy. Folkpsychological way of treatment for the psychoses was 61.7% in Seoul, 20.0% in the rural area. Even for the epilepsy, this psychological treatment was 22.2% in Seoul, 2.5% in rural area. Opinion about the efficacy of modern medicine in the treatment of mental illnesses was still negative. Favorable result of modern medical approach for the psychoses could be expected only in 28.6% of Seoul sample, 8.9% of rural sample. That of modern medical approach for the epilepsy could be only in 36.4% of Seoul sample and 10.5% of rural sample. Seoul sample responded to the psychoses as "curable" in 59.3%, but rural sample did in 20.2%. For the prognosis of epilepsy, Seoul sample responded as "curable" in 27.4% and rural sample only in 3.0%. It was impressed that the concept and way of treatment of mental illnesses were apparently changing from the primitive to the civilized by acculturation process. Two kinds of problem would be suggested. One is a discrepancy between concept and real attitude. Seoul people are interestingly enough to have desirable conceptual change of mental illnesses, while they frequently practice shamanistic and primitive medicinal approaches. By such reason, it would be likely that the conceptual acculturation would be the initial step to change, and attitudinal acculturation would be clearly later. The attitudinal acculturation is still intermingled with primitive and modern approaches. Another problem is poor expectation to modern medicine in the treatment of mental illnesses. Prognositc view is also not so favorable as expected, even the Seoul sample is more favorable than the rural is. Furthermore, they, both Seoul and rural peoples, have various kinds of psychological or folkpsychological causes and treatment. This tendency is more prevalent in Seoul. These patterns easily suggest a difficulty of secondary prevention in Korea.

상순과 턱의 수직 비율(vertical lip-chin ration)에 대한 선호도 조사

권성준,최갑림,임성훈,김광원 대한치과교정학회 2004 대한치과교정학회지 Vol.34 No.5

일반인들이 선호하는 상순과 턱의 수직 비율(Sn-Stm/Stm-Me')을 알아보기 위해 남녀 각 2명의 연조직 측모(profile)를 상순과 턱의 수직비율에 따라 상악의 변화없이 하악만을 변화시켜 1/1.8, 1/1.9, 1/2.0, 1/2.1, 1/2.2 비율의 5개의 측모 사진을 만들어 치과의사 44명(남자 22명. 여자 22명)과 일반인 430명(남자 303명, 여자 127명)을 대상으로 하여 설문조사를 통하여 선호도를 조사하여 다음과 같은 결과를 얻었다. 대상의 가장 선호하는 안모에 대한 성별간의 선호도 차이는 통계적으로 유의하지 않았다. 대상의 가장 선호하는 안모에 대한 치과의사와 일반인 집단간의 선호도 차이는 통계적으로 유의하지 않았다. 남녀 측모 모두에서 가장 선호하는 측모의 상순과 턱의 비율은 1/1.9이었으며 가장 선호하지 않는 비율은 1/2.2 로 나타났다. 이상의 결과를 종합하여 볼 때, 이전의 연구 비해 상순과 턱의 수직비율에서 턱의 비율이 다소 작은 측모, 즉 상순과 턱의 수직 비율이 1/1.9인 안모를 가장 선호하는 것으로 나타났다. The purpose of this study was to investigate the preference of Vertical Lip-Chin Ratio (= Sn-Stm /Stm-Me' hereafter VLCR) in Koreans. The assessors consisted of 44 dentists (male 22, female 22) and 430 lay persons (male 303, female 127). The survey was performed using a questionnaire asking the order of preference. The profiles presented in the questionnaire were based on the profiles of two males and two females, each morphed according to the VLCRs of 1/1.8, 1/1.9, 1/2.0, 1/2.1, 1/2.2. The results were as follows: The difference between males and females, and the difference between dentists and lay persons in the preference of VLCR were not statistically apparent. The most preferred VLCR was 1/1.9, and the least preferred VLCR was 1/2.2. These results indicate that the preferred VLCR is smaller than the previously reported VLCR ratios based, on the cephalometric evaluation of samples with favorable facial esthetics.