• 대한소아치과학회지
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• 제10권1호
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• pp.123-129
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• 1983

This study was designed to find out the prevalence d the fused teeth in the primary dentition and their successors. The clinical and panoramic radiographic examination was undertaken of 5226 children (male 2812, female 2414) attended department of Pedodontics, College of Dentistry, Yon Sei University, Seoul, Korea. The results were as follows; 1. The prevalence of the fused teeth in the primary dentition was 1.03 percent and female (1.2%) affected more frequently than male (0.89%). 2. Compare with the maxilla and mandible, the prevalence of the fused teeth were higher in the mandible than in the maxilla. 3. The fusion of the primary teeth were occured between central with lateral incisor in the maxilla, and central with lateral and lateral with canine in the mandible. 4. There were 33 cases (61%) of succeding teeth missing among 54 case of the rused teeth.

• 대한소아치과학회지
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• 제4권1호
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• pp.19-23
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• 1977

178 naturally exfoliated maxillary deciduous central incisors, 149 deciduous lateral incisors of children at exfoliation stage were studied on the degree and the tendency of the root resorption, and the age of exfoliation of the deciduous central and lateral incisors. The results were as follows; 1. The root of maxillary deciduous central and lateral incisors tended to be resorbed disto-lingually. 2. The age of exfoliation of maxillary deciduous central incisor was 7.27 year in male, 7.01 year in female, and the age of exfoliation of maxillary deciduous lateral incisor was 8.22 year in male, 7.77 year in female. 3. The exfoliation age of maxillary deciduous central and lateral incisors was earlier in female than in male.

• 대한소아치과학회지
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• 제2권1호
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• pp.53-56
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• 1975

We observed the orthopantomography taken by 800 children who came to our pedodontic department, School of Dentistry, S.N.U. and also got the incidence of supernumerary and congenital missing teeth as follows. (1) The children who had supernumerary or congenital missing teeth were 9.75% of all. (2) In incidence of supernumerary teeth, male was 0.50% higher than female. (3) Incidence of conginital missing teeth was 7.0% and male was 1.0% higher than female. (4) Incidence of congeintal missing teeth was mainly arised from mandible.

• 대한치과교정학회지
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• 제8권1호
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• pp.19-26
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• 1978

This study was undertaken to estabish the cephalometric standards of Hellman dental age III A group of Korean on the roentgenocephalometry. The subjects consisted of 26 males and 29 females with the normal occlusion and acceptable profile. The following conclusions were obtained; 1) The tables of mean and standard deviation were made from the measurements of both male and female. 2) A ll linear measurements in male were greater than those in female. 3) Mandibular growth rate of female was greater than that of male. 4) Comparision of the childern in Hellman dental age III A with those in the late primary dentition indicated the tendency of facial vertical growth.

• 대한소아치과학회지
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• 제5권1호
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• pp.12-18
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• 1978

The author has observed the ectopic eruption pattern on oblique cephalogram of 195 children. (5years: 78, 6 years: 58, 7 years: 59). The results were as follows; 1) Making a comparison between hold type and jump type of ectopic eruption, there are 4 cases in Hold type, 5 cases in jump type. 2) Making a comparison of ectopic eruptin between male and female, there are 7 cases in male, 2 cases in female. 3) Making a comparison of ectopic eruption between right side and left side, there are 5 cases at right side, 4 cases at left side. 4) Making a comparison of ectopic eruption among 5 years to 7 years, there are 4 cases in 5 years, 3 cases in 6 years, 2 cases in 7 years. 5) The prevalence of ectopic eruption of the maxillary first molar was 4.61%. 6) Normal eruption angle of the maxillary first molar is prevailing in $80^{\circ}{\sim}85^{\circ}$.

• 대한소아치과학회지
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• 제3권1호
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• pp.48-51
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• 1976

Surveying the developmental degree of the crowns of mandibular first bicuspid in 566 korean children (264 males and 302 females) from 3 to 7 years of age by oblique cephalogram, the author got to the following results. 1. The developmental degree of the tooth crown of mandibular first bicuspid was earlier in female than in male. 2. The period of complete development of the crown of mandibular first bicuspid was 7 year 1 month in male and 6 year 3 month in female. 3. There was no significant difference in the period of complete development of the tooth crown compared with that of Japanese and American children.

• 한국생활과학회지
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• 제6권1호
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• pp.1-14
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• 1997

The purpose of this study was to comprehend the age-related differences in the relationship and developmental tendency between Orphanage and Normal Children's affective and cognitive perspective-taking ability. The subjects were 5-year-old (N=64) and 7-year-old (N=64) children. In each group, there were equal number of boys and girls, 128 Children were composed of(male: 32, female: 32) and orphanage Children(male: 32, female: 32). Feshbach & Roe's child perspective-taking ability test was modified for this study and the test included four facial expression cards and six different stories including three types of affection. In the procedure of study, after a set of story cards containing one of three affective types, the subject was asked to retell the story shown in each cards to study cognitive perspective-taking ability, and for the affective perspective-taking ability. Then the subject was asked to tell the feeling of the hero in the story and to select one of the four facial expression which is consistent with the feeling. The cognitive perspective-taking ability and affective perspective-taking ability response were coded three kinds of scoring respectively. Scored data were analyzed with MANOVA. t-test, Pearson Correlations and Fisher-z test. The results were shown as follow : First, both Orpanage and Normal Children's the cognitive and affective perspective-taking ability increased with age. Secondly, both Orpanage and Normal Children's perspective-taking ability was lower than Normal Children's perspective-taking ability. Thirdly, both Orpanage and Normal Children's correlation between cognitive and affective perspective-taking ability increased with age.

• 대한가정학회지
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• 제26권4호
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• pp.43-52
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• 1988

This study is intended to reveal the nutritional realities of school children due to their box lunch. The samples were chosen at random from the third grade to the sixth grade children in an elementary school in Seoul : 122 male and 111 female children, 233 children in all. among the subjects, 44.3% have a family of four, 34.3% have over 500,000 won of family income a month, and 44.3% of their mothers graduated from a high school. The average intake of calories is 573.6 Kcal, and the ratios of the calory intakes to the recommended amounts are 90.6% in the third grade children and from the fourth grade to the sixth grade, 79.5% in the male children and 82.9% in the female children. The average consumption of protein is 21.0g and the ratio of animal protein is 41.4%. the ratio of energy yield nutrients is 67.4% : 14.5 : 18.0 (carbohydrate : protein " fat). Considering the recommended amounts, the intake of protein is enough; the consumption of vit, A, thiamine, niacin are appropriate;and the intake of calories, Riboflabin and ascorbic acid, calcium, iron are deficient. Even though there is no significant difference between the socioeconomic factors (the standard of education of the subjects' mothers and family income0 and the intakes of calories and protein, there is a tendency that the consumption of protein intake si more abundant in the middle class than in any other class. The subjects' distribution of the physical growth index, is as follows; A (6.9%), B(19.3%), C(48.5%), D(13.7%) and E (11.6%). As the subjects' intake of calcium increases, the weight shows significant improvement (p<0.001). As the consumption of calories increases, the physical development shows significant improvement (p<0.05), and the weight shows significant increase (p<0.001).

• 보건교육건강증진학회지
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• 제14권1호
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• pp.147-160
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• 1997

Nowadays according to the complexity of our daily life due to the development of industry and transportation various kinds of injuries happen. Since 1993 the death rate among 5-14 age children by injuries amount to about 57%. Furthermore, the injury of children can give a direct damage to their own family and it can also bring a serious loss to the country as well as the community where they live in accord with degree of an injury. From this reason, the importance of safety education has been increasing. In this study, it is aimed to clarify the effect of injury preventive behaviors on injury incidence of the 6th grade students in the elementary school. This study is accomplished by the survey sampled from 9 elementary schools in seoul, each of which belong to different district. The survey took for 15 days from the date of september 10th 1996 to september 25th 1996 and the results were as follows; 1. For demographic characteristic, sexual distribution was 48.7% of male students and 47.1% of female students. The required time from home to school was 10-19 minutes(51.8%), and the most way of their going to school is to walk(89.7%). Mothers who graduated from high school were 46.6% and 49.4% of fathers were above university graduated level. The most vocation of mothers was housewife as 56.7%. 2. The results of analysis on the injury rates, 75.8% of children experienced more than one injury and the most was play injury. With regards to sites where injuries happened, the room, the kitchen, and the living room in the house ranked first(38.3%) and then injuries at school such as on the playground, in the classroom, and on the stairs was 34.1%. 3. Considering the rate of injury incidence in accordance with demographic characteristics, male students experienced more injuries than female students(p〈0.05). For the way from home to school, children who went to school by bicycle experienced the most injuries and then on foot, by bus in order of which differences were statistically significant(p〈0.05). 4. From the comparison of parents' safety education practice and the injury incidence, the less often parents practice safety education, the more often children experience injuries(p〈0.05). 5. The results of analysis on the effect of injury preventive behaviors on accidents children who didn't act injury preventive behaviors experienced much more injuries than those who did injury preventive behaviors of which differences were statistically significant(p〈0.01). 6. From the results of analysis of factors effecting on the elementary school children's injuries, children without injury preventive behaviors had more effect on accidents than those who had injury preventive behaviors as odds ratio 2.06(p〈0.01), and the odds ratio of male students compared with female students was 1.47(p〈0.05).

• 한국산학기술학회논문지
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• 제16권4호
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• pp.2486-2494
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• 2015

본 연구는 도덕성 함양을 위한 숲 체험 활동이 유아의 도덕성 발달에 미치는 영향을 알아보는 데 목적을 갖고, 충남지역 소재 H 어린이집 만 5세 유아를 대상으로 실험 집단 20명(남아 9명, 여아 11명)과 통제집단 20명(남아 8명, 여아 12명)의 총 40명의 유아를 대상으로 2014년 4월 7일부터 7월 25일까지 실험 집단에게는 숲 체험 활동을, 통제 집단에게는 누리과정 연계 일반 활동을 총 15차시에 걸쳐 실시하였다. 연구결과 첫째, 숲 체험 활동 교육이 유아의 도덕적 판단력 향상에 효과가 있는 것으로 나타났다. 둘째, 도덕적 행동에 있어 질서, 예절, 절제가 숲 체험 활동 교육을 실시한 실험집단에 유의미한 향상을 보여 숲 체험 활동이 유아의 도덕적 행동 향상에 효과가 있는 것으로 나타났다. 이 같은 결과는 유아의 숲 체험활동이 또래와 같이 자연과의 교감과 상호작용을 통해 생명의 소중함과 더불어 또래 간 공동 협동 활동을 통한 질서, 예절, 절제를 인식하게 하는 도덕적 발달을 증진시키는데 유용한 교육임을 입증시켜 준 것이라 할 수 있다.