• Pediatric Infection and Vaccine
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• v.12 no.1
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• pp.67-74
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• 2005

Purpose : The incidence of mortality associated with respiratory difficulties is decreasing nowadays contributed to the development of neonatology. However, complications associated with mechanical ventilator are increasing. This study is to determine clinical manifestations, diagnositc availability of the endotracheal tip culture in patients with Ventilator-Associated Pneumonia(VAP) in neonatal intensive care unit(NICU). Methods : A retrospective analysis of 50 neonates who were admitted to the NICU of Kangnam Sacred Heart Hospital and had given mechanical ventilator from 1 January 2000 to 30 June 2003. VAP group defined as neonates who had pneumonia with mechanical ventilation longer than 48 hours. They were classified into VAP group(n=13) and control group (n=37) and the prevalence, microorganisms cultured from the endotracheal tube tip and risk factors were investigated. Results : The prevalence of VAP was 26.0%(n=13) and the most dominant microorganism cultured in our NICU was methicillin-resistant coagulase negative staphylococcus(MR-CNS) in 4 cases. Other microorganisms were Pseudomonas, Enterobacter, methicillin-resistant Staphylococcus aureus(MRSA) and Klebsiella. Gestational age, birth weight, Apgar score, respiratory distress syndrome, retinopathy of prematurity, bronchopulmonary dysplasia, sepsis, renal failure, pulmonary hemorrhage, pneumothorax were not different significantly between two groups except intraventricular hemorrhage(P<0.001) and patent ductus arteriosus(P<0.05). Duration of hospital stay and mortality rate were also not different significantly. Conclusion : VAP occurred at a significant rate among mechanically ventilated NICU patients. Despite of limitation of encotracheal tip culture, the most common microorganism was MR-CNS. We should be aware of occurrence of VAP in NICU neonate who were with mechanical ventilator and should treat with great care.

• Journal of Chest Surgery
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• v.39 no.2 s.259
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• pp.134-139
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• 2006

Background: Complications after surgery for esophageal cancer are various and not rare. Among them, pulmonary complication is well known as one of the most important insults which has negative influence on the postoperative course and results in mortality. So we attempted to analyze the factors which may have relation to postoperative pulmonary complication. Material and Method: The retrospective study was undertaken in 87 patients who underwent curative surgery for esophageal cancer from Jan. 1996 to Aug. 2005. We divided them into two groups, patients with pulmonary complication (group A, n=28), without pulmonary complication (group B, n=59). Statistical analysis was performed with Fisher's exact test. Result: The postoperative pulmonary complication developed in 28 patients ($32\%$). There was no difference between two groups in past medical history, preoperative pulmonary function, surgery time, anastomosis method, pathologic stage, and trial of neoadjuvant therapy. Age and incidence of cervical anastomosis were significantly higher in group A (p=0.001, p=0.023). The rate of routine postoperative ventilator care was significantly higher in group S (p=0.007). Chest tube indwelling time and hospital stay were significantly longer in group A (p=0.011, p=0.001). There were 6 postoperative deaths ($6.8\%$) and 5 deaths were related to pulmonary complication. Pneumonia was the most common cause of death and MRSA (methicillin resistant staphylococcus aureus) was the most common organism in sputum culture. Conclusion: Pulmonary complication after esophageal cancer surgery was the most important cause of death. Pulmonary complication was closely related to patient's age and cervical anastomosis. We think postoperative routine ventilator care is helpful for prevention of pulmonary complications, especially MRSA pneumonia, and reducing mortality.

• Proceedings of the Korea Water Resources Association Conference
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• 2007.05a
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• pp.361-365
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• 2007

자연재난은 발생원인에 따라 바람, 강우, 적설, 파고등으로 구분할 수 있다. 이러한 재난원인은 자연현상의 일부로 발생하였으나, 경제가 발전함에 따라 과거에 비해 재해에 안전한 사회를 요구하게 되어 재해저감을 위한 투자와 방재정책 개발의 필요성이 증대되고 있다. 기존에는 자연재난을 저감시키기 위하여 연최대치 강우를 통계 분석하고 강우-유출관계를 이용하여 장래에 발생할 홍수량을 예측하여 자연재난을 저감할 수 있도록 설계하는 것이 일반적인 재난저감계획 수립으로 간주되었다. 그러나, 재해예방을 위해서는 과거에 발생한 재난의 지역적 특성을 분석하여 재난발생 위험과 피해규모를 파악함으로써 재난계획 수립의 기초자료로 활용할 필요성이 있다. 이러한 자연재난에 대한 대책수립은 국가차원에서 필요하며 이를 위해서는 지역별 안전도 평가의 필요성이 증가하게 된다. 그러나 이러한 연구를 수행하기 위해서는 방대한 자료를 바탕으로 풍수해 발생특성을 분석하는 연구와 지자체 또는 지역별 재난피해저감 능력을 수치적으로 나타낼 필요성이 있다. 따라서, 공학적인 면뿐만 아니라 행정적인 면을 동시에 고려하는 학제간 연구가 필요하다. 본 연구에서는 우리나라에서 주로 발생하는 풍수해에 의한 자연재난 특성을 파악하고 재난발생 확률을 고려한 재난피해규모와 재난피해 저감능력을 비교하여 전국 234개 지자체별 지역 및 시설물별 안전도를 평가하고자 한다. 과거 10년간 재해연보에 수록된 지자체별 피해현황을 지자체별 특성을 고려하여 분석, 지자체별 연평균 피해규모를 소방방재청의 지역별 안전도 지침서에 의거, 10등급으로 분석하였다. 또한, 지자체별로 투자우선순위 및 방재예산편성의 효율성 극대화를 위해 지자체별 시설물별 피해현황을 분석하는 기법을 개발하여 지자체별 시설물별 안전도 진단지표를 설정하였다. 분석된 결과는 지자체별 시설물별 재해저감을 위한 풍수해저감 종합계획 재난보험제도 도입등의 기초자료로 적용될 수 있다.로 나타났다. 이는 두 흐름에 의해 와(vortex)가 크게 형성되어 하상의 세굴에 영향을 미치기 때문으로 판단되었다.보다 본질부가 차지하는 면적이 월등히 적고 제1차 및 제2차섬유가 차지하는 면적이 많았다. 따라서 고섬유함량인 대마의 품종개량에 있어서는 가능한 한 본질부가 차지하는 면적은 축소시키고 제1차 및 제2차섬유가 차지하는 면적은 증대시켜야 할 것으로 본다.우리 나라 수도의 작기는 앞으로 당기는 것이 좋다고 고찰된다. 6. 우리 나라의 현행 수도작기로 본 기온 및 일조조건은 수도의 분얼전기에 대해서는 호조건하에 놓여 있으나, 분얼후기인 7월 중ㆍ하순 경의 일조부족과 고온다습조건은 병해, 특히 도열병의 유발원인이 되고 있다. 7. 우리 나라의 현행수도작기로 본 전국각지의 수도의 출수기는 모두 일조시간이 적은 부적당한 시기에 처해 있다. 8. 출수후 40일간의 평균기온에 의한 적산온도 88$0^{\circ}C$의 출현기일은 수원에서 8월 23일이었고, 년간편차를 고려한 안전출수기일은 8월 19일로서 적산온도면에서는 관행 출수기일은 약간 늦다고 보았다. 9. 등열기의 평균기온에 의한 적산온도는 현행 수도작기로서는 최종한계시기에 놓여 있으며, 평균기온의 년간편차와 우리 나라의 최저기온이 낮은 점을 고려할 때, 현행출수기는 다소 늦은 것으로 보았다. 10. 생육단계별의 수도체내의 질소함량은 영양생장기의 질소함량이 과다하였으며, 출수 이후에 영양조락을 여하히 방지하느냐가 문제된다고 보았다. 11. 수리불안전답 및 천수답이 차지하는 전답면적의 비율은 차차 감소되고 있는데, 이와 전체 10a당 수량의 증가율과의 상관계수를 산출하였는데, 수리불안전답과의 상관계수 (4)는 +0.525였으며, 천수답과는 r=+0.832, 그리고 수리불안전답과 천수답을 합계한 것과의 상관계수 (r)는 +0.841로서 후2자와는 고도의 정(+) 상관을 보여 천수답이 차지하는 면적비율이 작

• Journal of The Korean Association For Science Education
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• v.24 no.5
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• pp.902-915
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• 2004

Science drama can be an useful tool for understanding the nature of science, Science-Technology-Society relationship by providing indirect experiences to young students. Specific science concept and knowledge can also be learned with high interests. In this study, to explore the usefulness of science drama in elementary science lessons, two scripts of science drama and lesson plans were developed and implemented. Six step model for science drama lessons was also suggested. One was 'Manhattan Project' which dealt with social, ethical responsibility in using science & technology (science argument drama), and the other was 'Mom, My blood type is O' which explained the heredity of blood type (science concept drama). Two teachers were asked to write their journals during preparation and implementation of science drama lessons, and the lessons were observed by the researcher and video taped for analysis. Some students were interviewed just after the lessons by the teacher and all students were asked to write their impressions, change of their thought, what is leant etc. Overall responses of students and teachers on the two science drama lessons were very positive, 'Mom, My blood type is O' got more positive responses, and girls were more positive than boys. Some students anticipated another science drama even suggest topics for it. 'Mom, My blood type is O' was successful in making students (grade 3) understand the knowledge related with heredity of blood type (71% of the students got perfect answer). In 'Manhattan Project' students (grade 5) perceived more diverse location of responsibility after the lesson, but the danger and harmfulness of atomic power was embossed. This implied the need of more careful planning for the relevant learning activities before and after the play of science drama.Two teachers perceived the science drama as a new, useful tool for some subject which is hard to deal with by other teaching method. They were also satisfied with students' high interest and engagement during the science drama lessons but the extra time and effort for the lessons were pointed out as a main difficulties.

• Tuberculosis and Respiratory Diseases
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• v.59 no.5
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• pp.504-509
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• 2005

Background : Endobronchial tumors cause life-threatening dyspnea and can lower the quality of life due to central airway obstruction. In those cases with an intraluminal tumor, various bronchoscopic techniques are available for tumor debulking. The therapeutic effect of bronchoscopic electrocautery for palliation in patients with a symptomatic tumor obstruction was studied. Method : Nineteen patients with bronchogenic carcinomas (n=15) and metastatic tumors affecting the bronchi (n=4), between March 2002 and March 2005, were enrolled in this study. Electrocautery was performed under local anesthesia using an electroprobe and diathermic snare. Using flexible bronchoscopy, a follow-up bronchoscopic examination was performed 3-4 days later. Symptom improvement was evaluated by $FEV_1$, FVC and dyspnea score (Modified Borg Category Scale (0~10)), both before and after the electrocautery. Results : The success rate of electrocautery on the follow up examination was 84%. Patients with endoluminal airway lesions had a mean overall decrease in the size of the obstruction to $47.8{\pm}15.7%$. The mean Improvement in the dyspnea score immediately after the endobronchial tumor debulking was $2.78{\pm}1.42$. The average improvements in the $FEV_1$ and FVC after electrocautery were $0.32{\pm}0.19L$ and $0.5{\pm}0.22L$, respectively. There were 2 cases of complications related with electrocautery (one each of pneumothorax and pneumonia). Conclusion : Electrocautery using an electroprobe and diathermic snare was an effective and safe palliative treatment for a symptomatic endoluminal airway obstruction in lung cancer.

• Journal of the Korean Society of Food Science and Nutrition
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• v.30 no.4
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• pp.747-759
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• 2001

The sanitary status of 264 restaurants was investigated to develop a program of sanitary education at restaurants for improving sanitary levels of restaurant and consumers’ food safety. This investigation was performed through direct interviews on general items and sanitations for employees, facilities, equipments and food treatment. The restaurants are grouped into four different types according to the food served: Korean style food, Japanese style raw fish, roasted ribs, and western style food. It is found that sanitary education for employees are conducted at 66.5% of the total restaurants. The highest percentages are obtained by Korean style food restaurants (83.1%) and the lowest by western style food restaurants (55.6%).Washing facilities for employees are equipped at only 66.8% of the total restaurants. In the personal sanitation, 96.6% of the employees wash their hand after touching a dirty stuff, 77.5% after touching money and 57.1% after using telephone. It is also revealed that during food preparation shoes, overgarments, and caps are worn by 58.5%, 55.5%, and 20.6% of the employees, respectively. 73.5% of the restaurants are equipped with dish storages facilities while only 59.2% of restaurants have sterilizers for dishes. Also, chopping boards are sterilized more than once a week by 74.8% of them and knives everyday by 71.6%, 15.4% of restaurants sterilize their knives only once a week. 56.8% of restaurants check temperatures of the refrigerators and 26.2% of restaurants do not even sterilize the refrigerators. 31.8% of restaurants sterilize the kitchens with sodium hopochlorite after cooking. 93.3% of the restaurants store the raw food and the cooked foods separately. 49.8% of the restaurants refroze thawed food and 19.4% of the restaurants reuse leftovers. The frozen foods are thawed at room temperature by 49.4% of the total restaurants and 66.7% of the roasted rib restaurants.

• Journal of the Korean Association of Geographic Information Studies
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• v.16 no.2
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• pp.65-74
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• 2013

A research program for the roe deer (Capreolus pygargus) has been set up at the Jeju Experimental Forest of Warm-temperate and Subtropical Forest Research Center in Jeju Island. To explore the home range size and habitat environment, 3 males and 3 females have been captured and released with GPS-CDMA based telemetry since 24th April 2012. Among them 2 females were captured at Hannam Forest of Seoguipo, were pregnant and monitored by the tracking system. There are significantly different patterns in behavior around the parturition. After parturition they show recurrence behavior toward one point in the forest, while they have irregular patterns in moving before. To calculate the home range size, the MCP (minimum convex polygon) and Kernel Method are applied through the extension of ESRI ArcView GIS 3.2a. The pregnant female captured 9th May 2012 has the size of MCP=67ha and Kernel 95%=0.5ha and the pregnant female captured 12th July 2012 has the size of MCP=82ha and Kernel 95%=0.9ha. Although a fawn could move immediately just after the birth likely others to avoid any risks, they stay at very narrow space significantly, and the size become wider when more time goes by. Furthermore, they mainly have a home range away from human activity area such as forest tracking roads. The habitat environment for the parturition is summarized as 40years old cryptomeria forests with new sprouting shrubs for foods, which are the controlled forest through the thinning and removing shrubs 2 years ago. This means that forest works could cause positive results for the parturition and survival of young. The period of parturition is earlier than highland in Jeju Island, the size of home range is narrower than other countries, and the habitat environment of the shelter for a fawn is similar to previous research in other countries.

• Tuberculosis and Respiratory Diseases
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• v.47 no.3
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• pp.365-373
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• 1999

Background: Despite widespread use of tracheostomy in intensive care unit, it is still controversial to define the best timing from endotracheal intubation to tracheostomy under prolonged mechanical ventilation. Early tracheostomy has an advantage of easy airway maintenance and enhanced patient mobility whereas a disadvantage in view of nosocomial infection and tracheal stenosis. However, there is a controversy about the proper timing of tracheostomy. Methods: We conducted a retrospective study of the 35 medical and 15 surgical ICU patients who had admitted to Ewha Womans University Mokdong Hospital from January 1996 to August 1998 with the observation of APACHE III score, occurrence of nosocomial infections, and clinical outcomes during 28 days from tracheostomy in terms of early (n=25) vs. late (n=25) tracheostomy. We defined the reference day of early and late tracheostomy as 7th day from intubation. Results: The number of patients were 25 each in early and late tracheostomy group. The mean age were $48{\pm}18$ years in early tracheostomy group and $63{\pm}17$ years in late tracheostomy group, showing younger in early tracheostomy group. The median duration of intubation prior to tracheostomy was 3 days and 13 days in early and late tracheostomy groups. Organs that caused primary problem were nervous system in 27 cases(54%), pulmonary 14(28%), cardiovascular 4(8%), gastrointestinal 4(8%) and genitourinary 1(2%) in the decreasing order. Prolonged ventilation was the most common reason for the purpose of tracheostomy in both groups. APACHE m scores at each time of intubation and tracheostomy were slightly higher in late tracheostomy group but not significant statistically. Day to day APACHE III scores were not different between two groups with observation upto 7th day after tracheostomy, Occurrence of nosocomial infections, weaning from mechanical ventilation, and mortality showed no significant difference between two groups with observation of 28 days from tracheostomy. The mortality was increased as the APACHE m score upto 7 days after tracheostomy increased, but there were no increment for the mortality in terms of the time of tracheostomy and the days of ventilator use before tracheostomy, Conclusion: The early tracheostomy seems to have no benefit with respect to severity of illness, nosocomial infection, duration of ventilatory support, and mortality. It suggests that the time of tracheostomy is better to be decided on clinical judgement in each case. And in near future, prospective, randomized case-control study is required to confirm these results.

• Proceedings of the KSCN Conference
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• 2003.11a
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• pp.1070-1071
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• 2003

노년기의 독립적인 생활유지와 삶의 질을 향상시킬 수 있는 바람직한 영양섭취 방법을 모색하기 위한 종적연구의 대상자로 자원한 서울지역의 건강한 40-64세의 중년 293명(남 121명, 여172명)을 대상으로 생활습관과 영양섭취실태를 조사한 결과는 다음과 같다. 대상자의 평균 연령은 남자 52.0$\pm$7.3세, 여자 519$\pm$6.9세였고, 대부분 부부 중심으로 조사하였다. 교육수준은 남자의 71.9%, 여자의 39.5%가 대학졸업 이상이었으며, 남자의 43.0%가 전문직, 24.8%가 행정ㆍ사무직이었고, 가계의 한 달 평균 수입이 200만원 이상자가 72.5%로써 본 조사의 자원자는 대체적으로 고학력, 전문직종의 중류층이었다. 건강에 대한 염려를 가끔 또는 자주 하는 대상자가 66.9%로 건강에 대한 관심은 높았으나 건강을 지키기 위한 실천은 낮은 것으로 나타났다. 그 예로 지난 1년간 체중이 증가하고 있는 대상자가 37.5%였고, 이들 중 75%가 2kg 이상의 체중이 늘고 있지만 체중을 줄이려고 노력하는 대상자는 37.5%뿐이었다. 음주는 남성의 56.5%가 평균 주 2회 정도 하는 편이었고, 1회 음주량은 소주로 1병 이하가 대부분(88%)이었다. 현재 흡연자는 남자의 40.5%였고, 금연자는 30.6%로 비교적 흡연율이 낮았다. 식사시간은 대부분(83.6%) 규칙적이었다. 식사를 주 2-3회 이상 거르는 대상자가 남자는 23%인 반면 여자는 49%였고, 이들 대부분(60.3%)이 아침을 먹지 않았다. 1주일에 1번 이상 외식하는 대상자는 남자의 84%, 여자의 66%였다. 식사시 식품의 배합에 대하여 별로 관심이 없다는 사람이 50%였지만 실제로 식품군별 섭취 시에는 상당한 관심이 있는 것으로 나타났다. 즉, 육류의 기름기를 대충 또는 거의 다 제거하고 먹는 대상자가 남자의 68%, 여자의 88%였고, 육류를 자주 먹지 않거나 소량씩 먹는 대상자가 94%, 생선.두부 및 콩제품을 하루 1끼 이상 섭취하는 대상자가 87%, 채소를 하루 1번 이상 섭취하는 대상자가 96%인 반면, 인스턴트식품이나 패스트푸드를 주 2-3회 이상 먹는 대상자는 23% 정도였다. 영양지식점수(15.4$\pm$3.1/25)와 영양태도점수(50.5$\pm$4.9/75)는 비교적 양호하였다. 전체적으로 오답률이 높은 문항은 체중조절에 있어서 식사와 운동의 관계, 당뇨병 환자의 흰쌀밥 섭취 문제, 비타민제의 섭취와 감기, 고단백 식사의 문제점 등에 관한 것이었다. 반면 철분 섭취와 빈혈의 관계, 비만의 위험성, 동물성 기름의 섭취와 혈중 콜레스테롤치, 우유가 Ca의 급원이면서 성인에게도 필요하다는 것 등은 잘 인식되고 있었다. 조사 대상자의 평균 에너지 섭취량은 RDA의 77.3 $\pm$ 13.6%였으나, 이들 대부분(80%)의 활동 정도가 가벼운 활동에 속하므로 에너지가 부족하다고 할 수는 없다. 반면 평균 단백질 섭취량은 RDA의 109.9 $\pm$ 23.5%로 충분하였고, 3대 열량영양소 즉, 단백질:지방:탄수화물의 구성비는 16:22:62로 지방의 섭취가 약간 높으나 바람직한 구성비를 보였다. 권장량의 75% 이하를 섭취하고 있는 영양소는 칼슘(70.7$\pm$23.9%)뿐이었다. 과체중자의 비율을 체질량지수(BMI) 25이상으로 구분하면 남자의 45%, 여자의 23%가 과체중자로 나타나나, 23이상으로 구분하면 남자의 71%, 여자의 52%가 과체중자로 분류되었다. 이를 WHR의 기준치로 분류하면 남자의 25%, 여자의 26%가 과체중자로 나타났다. 대부분 대상자의 hemoglobin치(99%), hematocrit치(90%), 혈장 albumin치(99.7%)는 양호하였다. 혈당이 140mg/㎗ 이상인 대상자는 2.7%에 불과하였다. 혈중 총콜레스테롤치가 240mg/㎗ 이상인 대상자는 19%, 중성지방치가 250mg/㎗ 이상인 대상자는 9%, HDL-콜레스테롤치가 35mg/㎗ 이하인 대상자는 2.4%로 혈중 지질 profile은 양호하였다. 이상의 결과로 보아 본 연구 대상자는 영양섭취상태와 생화학적 건강상태가 양호하다고 판단되므로 종적연구의 대상자로 적합하다고 사료된다.

• Journal of dental hygiene science
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• v.9 no.4
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• pp.435-441
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• 2009

The purpose of this study was to examine the use of dentifrice among preschoolers in an attempt to provide consumers with the right information on the choice of dentifrice and toothbrush for different age groups of children. The subjects in this study were parents who raised preschoolers in Seoul and Gyeonggi Province. A self-administered survey was conducted over approximately three months from May to July 2007 to find out the state of their children's use of dentifrice. After the collected data were analyzed, the following findings were given: The greatest group (51.5%) needed parental help with toothbrushing. The biggest group of the patients (35.6%) considered it necessary for children at the age of 6 and 7 to brush their teeth with the help of their parents. As to dentifrice squeezing and parental outlook on that, the biggest group of the parents (49.4%) replied their children squeezed the dentifrice for themselves, and the greatest group (42.2%) thought that children needed parental help with dentifrice squeezing by the age of five. Regarding dentifrice swallowing and parental perception of it, the biggest group (61.9%) saw their children swallowing the dentifrice, and the greatest group (73.7%) believed that children must not swallow the dentifrice. The biggest group of those who found it okay for children to swallow the dentifrice (62.5%) thought that it would be no problem to swallow the dentifrice for child. Concerning the use of toothbrushes, the biggest group (96.7%) had their children use toothbrushes for child. The above-mentioned findings of the study showed that the children who are at the age of 3 or down should use non-fluoride containing dentifrice or just a small amount of fluoride that is as equal as the size of a pea. Children must brush their teeth under the guidance of their parents, and sustained education should be provided about that.