• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2008년도 학술대회 1부
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• pp.426-432
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• 2008

회화는 2차원 평면 위에 색과 선을 사용하여 여러 가지 형상을 표현하는 조형예술이다. 본 논문에서는 이러한 회화의 평면적 특성에 입각하여 3차원 물체들로 구성된 장면을 화가가 캔버스 위에 붓을 놀려 채색한 것과 같은 회화 스타일로 렌더링하는 방법을 소개하고, 카메라의 시점과 시선이 변화하는 동적인 장면에서 여전히 평면적 특성을 유지하면서 붓질의 방향이 처음에 지정된 방향을 유지하도록 변화하는 방법을 제안한다. 회화의 정의에 띠라 캔버스와 같은 2차원 평면 위에 붓으로 칠한듯한 효과를 연출하기 위해서 본 논문에서는 화면 공간 위에서 크기가 동일한 빌보드를 사용하여 붓질-붓을 한번 놀려 색을 칠하는 것-을 한다. 화면 전체에 붓질을 하여 장면을 렌더링 하여도 장면을 바라보는 카메라가 움직이면 처음의 붓질 방향을 유지하기 위하여 붓질의 방향 역시 변하여야 한다. 만일 붓질이 변하지 않고 동일한 방향을 유지한다면 마치 일정한 붓질 모양의 패턴이 있는 유리 뒤로 물체들이 움직이는 것 같은 시각적 오류가 있는 결과를 얻게 된다. 이것을 막기 위하여 본 논문에서는 장면 안에서 시점이나 시선의 방향이 바뀌는 애니메이션이 일어날 때 그에 맞춰 물체 위의 붓질이 함께 회전하는 방법을 제안한다. 붓질이 회전할 각도는 첫 프레임의 장면과 현재 프레임의 장면의 샘플 포인트들에 대하여 위치 차이를 비교하는, least-square solution을 사용하는 Horn의 2차원 유사성 검사를 수행하여 얻는다. 본 논문에서는 실험을 통해, 처음에 회화 스타일로 렌더링된 장면에서 실시간으로 카메라를 움직이며 붓질의 방향이 변화하는 모습을 관찰하였고, 처음에 지정된 방향을 유지하도록 회전하는 것을 확인하였다.

• International Journal of Clinical Preventive Dentistry
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• 제14권4호
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• pp.228-234
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• 2018

Objective: The authors have experimented for the artificial plaque removal effect of several kinds of 360 degree rotating head typed tooth-brushes with sonic vibratory actioned by using of automatic machine for horizontal scrub method in order to find the better toothbrush type for plaque removal. Methods: The experiment was conducted on three medium to 360 degree rotating head toothbrushes, a medium sized toothbrush and a medium sized toothbrush, and a flat toothbrush consisting of 30 ordinary toothbrushes. A brushing machine with horizontal scrubbing was manufactured and had variations of the end of the bristle attached to or near the surface of the teeth, a vibrating wave action force of 16,000 or 18,000 cycles per minute, and a working time of 2 or 3 minutes. The tooth removal effect was confirmed by scanning and analyzing images with a computer program after automatic brushing with the machine. The elimination rate results for each group were analyzed using the independent t-test and one-way ANOVA test. Results: It revealed the most in removal effect for the artificial plaque in such conditions as action at near the tooth surface with 18,000 cycle for 3 minutes in case of using A, B, and C tooth-brush. And it has more removal effect rate than for using the plane tooth-brush (p<0.05). Conclusion: It was recommended to develop the 360 degree rotating head and vibratory toothbrush focusing to use near the tooth surface with 18,000 cycles of vibration for 3 minutes at one site of the teeth area.

• 한국임상보건과학회지
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• 제1권2호
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• pp.1-9
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• 2013

Purpose: The purpose of this study was to provide basic data of oral health policy and effective nonsmoking educational the basic data comparing the subjective oral health recognition and tooth brushing pattern by smoking whether or not, the subjects were adults to visit dental clinic. Methods: The subjects were a total of about 245 adults visited dental clinics in Busan metropolitan city and Gyeongnam province some areas. The datas were collected from December 17, 2012 to February 17, 2013. Data analyses were done with SPSS program through frequency analysis and chi-square test. Results: The tooth brushing pattern of non-smokers were more brushing after meals and snacks, and then brushing within three minutes before bedtime and brushing with more than 3 minutes, brushing with rotating method is pretty more, smokers were not brushing after the meal, a snack, and then within 3 minutes before going to bed without brushing, more than three minutes brushing with rotation method. Subjective oral health status of non-smokers, the more awareness is pretty healthy, but smokers were the more unhealthy side, the greater the smoking amount among smokers subjective oral health were recognized as a bad side. Conclusion: It was necessary to recognize subjective oral health status and to provide a way to practice corrective brushing pattern according to smoking or not and smoking amount. Subjective oral health awareness and brushing pattern directly related to the smoking or not and smoking amounts of the subject, so when dental care, it should be followed to recognize exactly what to give oral health status of subjects and provide a way of effective oral health management in order to improve the oral health and quality of life.

• 치위생과학회지
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• 제7권3호
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• pp.187-191
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• 2007

본 연구는 D도시 소재 3개 소년원에 수용되어 있는 청소년 108명을 대상으로 구강건강에 대한 인식도를 조사함으로써 자신들의 구강건강에 대한 지식도를 평가하고 올바른 구강보건교육을 통하여 구강건강을 증진시키고자 하였으며, 2006년 6월 13일 부터 6월 28일까지 1차 설문 후 시청각 교육 자료와 1인 1칫솔을 사용하는 칫솔질교습을 통하여 구강보건교육을 한 후 동일한 설문지를 이용하여 2차 설문을 실시하여 다음과 같은 결과를 얻었다. 1. 치아우식증의 개념에 관한 인식도는 구강보건교육 전에는 치아에 생기는 병이라는 응 답이 75.0%에서 교육 후에는 82.4%로 증가하였으며 통계적으로 유의하게 높았다(p < 0.001). 2. 치아우식예방물질에 관한 인식도는 구강보건교육 전에는 불소라는 응답이 34.3%에서 교육 후에는 75.0%로 증가하였으며 통계적으로 유의하게 높았다(p < 0.001). 3. 칫솔질 방법에 관한 인식도는 구강보건교육 전에는 회전법 응답이 21.3%에서 교육 후 에는 95.4%로 증가하였다. 4. 1회 칫솔질 시간에 관한 인식도는 구강보건교육 전에는 3분이라는 응답이 58.3%에서 교육 후에는 88.9%로 증가하였으며 통계적으로 유의하게 높았다(p < 0.001). 5. 흡연이 구강건강에 미치는 영향에 관한 인식도는 구강보건교육 전에는 나쁨 응답이 65.7%에서 교육 후에는 93.5%로 증가하였다. 6. 구강건강증진을 위한 구강보건교육 후 인식도는 치아는 건강을 위해 중요하다라는 응 답 중 매우 그렇다가 78.7%로 가장 높았으며(p < 0.001), 올바른 칫솔질은 구강병을 예 방한다라는 응답 중 매우 그렇다가 76.9%(p < 0.001), 잇몸병 예방을 위해 스켈링이 필 요하다는 응답 중 매우 그렇다가 37.0%(p < 0.001), 금연은 치아 건강에 좋다는 응답 중 매우 그렇다가 77.8%(p < 0.001), 정기검진은 꼭 받아야 한다는 응답 중 매우 그렇다가 62.0%로 나타났다(p < 0.001).

• 한국치위생학회지
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• 제8권4호
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• pp.205-217
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• 2008

The purpose of this study was to provide information on the development of an oral-health promotion program geared toward office workers. The subjects in this study were 240 employees at the headquarters of S construction company. After a survey was conducted in July and August 2008, the answer sheets from 208 respondents were gathered, and 191 answer sheets were analyzed except 17 unanalyzable ones. The findings of the study were as follows: 1. In regard to subjective oral health status, the largest number of the participants that accounted for 37.2% found their mouth to be neither healthy nor unhealthy. The greatest number of them that represented 58.1% had never visited a dentist's office to receive preventive treatment. 2. Regarding relationship between toothbrushing education experience and toothbrushing frequency, the most common toothbrushing frequency was three times a day( 46.5%) among the company employees who had ever received that education. In the event of the office workers without that experience, the most prevalent frequency was three times(63.6%). The toothbrushing frequency was statistically significantly different according to the toothbrushing education experience(p<0.05). As to the relationship of toothbrushing education experience to tooth- brushing method, the largest number(48.2%) of those who had ever received that education brushed their upper and lower teeth along with the gums by rotating the toothbrush downward from the top and upward from the bottom respectively. In the event of the office workers without that experience, 49.4 percent brushed their teeth and gums by rotating the toothbrush up and down. Thus, whether they had ever received education about toothbrushing made a statistically significant difference to their toothbrushing method(p<0.05). 3. As a result of evaluating their oral health belief by utilizing a five-point scale, they got a mean of 2.95. In each area of oral health belief, they got the best marks in benefit(3.66), salience(3.42), barrier(2.84), susceptility(2.58) and seriousness(2.23). Given the above-mentioned finding of the study, two sorts of oral health beliefs, which are benefit and salience, should be stressed in the development of oral health education programs that cater to company employees. And sustained research efforts should be channeled into finding out the relationship between oral health and actual oral health care.

• 한국치위생학회지
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• 제19권3호
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• pp.375-385
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• 2019

Objectives: The purpose of this study was to provide basic data for gingivitis management programs by dental hygienists by evaluating the effect of oral health education, oil pulling, and professional toothbrushing on gingivitis. Methods: A total of 38 subjects were divided into three groups: control group (12 subjects), experimental group 1 (13 subjects), and experimental group 2 (13 subjects). The control and experimental groups were instructed to brush using the rotating method. Distilled water was provided to the control group after training. Coconut oil was provided every morning for about 10 minutes. In the experimental group 2, a professional brushing method was used at each visit. Results: There were no significant differences in oral health among the three groups, and there was homology between patient hygiene performance (PHP) index (p=0.144) and bleeding rate (p=0.213). The PHP index showed a significant interaction between the group and measurement time. The control and experimental groups showed changes in the PHP index with time (F=3.711; p=0.013). The bleeding rate showed a significant interaction between the group and measurement period. The control and experimental groups showed changes in the bleeding rate with time (F=6.707; p<0.001). Conclusions: Oral health education, professional toothbrushing, and oil pulling specialists in oral care of gingivitis were effective in managing gingivitis. It is necessary to educate people on self-management methods for oral health promotion using gingivitis management programs by dental hygienists.