• 한국학교보건학회지
• /
• 제13권2호
• /
• pp.295-317
• /
• 2000

This study was conducted to prevent oral disease of primary school, middle school, and high school students, providing basic data for the development of oral health education programs. Data were collected from 898 primary school, middle school, and high school students from March 2, 1999 to May 31, 1999. The results of this study are summarized as follows; 1) The subjects of this study were primary school students(32.6%), middle school students(33.0%), and high school students(34.4%). Boy students were slightly more prevalent than girl students. That is, primary school boys were 56.3%, middle school boys were 53.2%, and high school boys were 52.6%. 2) According to the self-judgement of oral health, primary school students were better than middle/high school students and boy students were better than girl students, 63.5% of primary school students and 57.8% of middle/high school students brushed their teeth once or twice a day. 3) 76.3% of middle/high school students and 63.5% of primary school students experienced dental caries. Girl students were higher than boy students in experiencing dental caries, 35.9% of primary school students and 27.6% of middle/high school students experienced periodontal disease. 4) 22.9% of primary school students and 7.9% of middle/high school students received oral examinations periodically. Girl students showed a higher rate than boy students in primary school, while boy students showed a higher rate than girl students in middle/high school. 5) Explaining to the reasons for reluctant visits to dental hospitals and clinics, 'no time to go' was highest(22.9% of primary school students; 27.4% of middle/high school students) and the rate of 'feeling scared' was second highest. Middle/high school students were more reluctant to visit dental hospitals and clinics than primary school students. In case of problematic symptoms in the mouth, the rate of 'feeling painful or cold in teeth when eating cold or hot foods' was highest, 71.3% of primary school students was concerned about oral health, while 68.6% of middle/high school students was concerned about it. 6) In gathering to the sources of information on oral health, the rate of medical institutions was highest(30.0%) in primary school students, while the rate of family members or persons around them was highest in middle/high school students. 7) 54.9% of primary school students received oral health education, while 13.1% of middle/high school students received it. Only 4.7% of middle school and high school girls received it. In relation to dental health education, the rate of 'possibility of prevention of oral caries or disease of the gum' was highest. 79.5% of primary school students and 80.3% of middle school students answered that they would attend oral health education. 8) 60.4% of primary school students and 60.2% of middle/high school students think the purpose of oral health is to prevent dental caries and disease of the gums. In preventing dental caries, 78.8% of primary school students and 71.8% of middle school students thought that periodical oral examination was effective, 88.4% of primary school students and 88.8% of middle/high school thought that brushing one's teeth was effective and 64.1% of primary school students and 50.7% of middle school students thought that the use of toothpaste containing fluoride was effective. In preventing periodontal disease, 91.1% of primary school students and 90.2% of middle/high school students thought that brushing one's teeth was effective, while 72.4% of primary school students and 70.3% of middle/high school students thought that teeth cleaning was effective. 9) 16.0% of middle school students and 12.7% of high school students thought that their oral health condition was healthy. According to individual experiences in dental treatment, the rate of experience of middle school students was higher than that of high school students, 12.7% of middle school students received oral examinations periodically, while only 3.3% of high school students did so. 10) In cases of 'having no problematic symptoms in the mouth' and 'concerns about oral health', the rate of middle school students was higher than that of high school students. In gathering obtaining information on oral health, the rate of obtaining it through broadcast media including TV, Radio, etc. was highest in middle school students, while the rate of obtaining it through family members or persons around them was highest in high school students. 11) 81.7% of middle school students have not received oral health education. In case of girl students, 97.3% have not received it in high school students. 85.6% of middle school students and 151.2% of high school students think that oral health education is necessary. 12) According to the knowledge level of oral health, the point of high school students($26.33{\pm}2.33$) was similar to the point of high school students($26.23{\pm}2.30$). It appeared that the point of primary school students was highest($26.35{\pm}2.50$) The more concerned about oral health the students were the higher the knowledge level of oral health was. In conclusion, the middle/high school students' knowledge level of oral health was lower than primary school students. The rate of middle/high School students' experience in oral health education was too low. Therefore, it is necessary to intensify oral health education for middle/high school students. Especially, the necessity of oral health education to girl students is strongly recommended. Developing an oral health education program for primary school, middle school, and high school students, related public authority and organizations, teachers; and dentists must actively make efforts together in order to maintain healthy teeth through having students prevent dental caries and periodontal disease.

• 대한치과교정학회지
• /
• 제31권4호
• /
• pp.467-477
• /
• 2001

이 연구의 목적은 호선으로 유도되는 치아이동을 실험실에서 실험하는 동안 브라켓과 선재의 운동 마찰저항에 대한 브라켓 수, 브라켓 폭경, 선재 크기가 미치는 영향을 관찰하기 위한 것이다. 상악 제 1, 2소구치, 제 1대구치와 유사한 크기의 레진 치아를 사용하였으며, 치주인대와 탄성계수가 비슷한 폴리 에테르 인상재를 사용하였다. 스테인레스 스틸 트윈 에지와이즈 브라켓으로 좁은 폭경 (2.4 mm), 중간 폭경 (3.0 mm), 넓은 폭경 (4.3 mm)을 사용하였으며, 강선으로는 0.016, 0.018, $0.016\;{\times}\;0.022,\;0.019\;{\times}\;0.025$인치의 굵기를 사용하였고, 결찰은 합성고무링을 이용하고, 제1소구치에 부착된 좁은 폭경 브라켓 1개, 제 1, 2소구치에 부착된 2개의 중간 폭경 브라켓 및 제 1, 2소구치와 제 1대구치에 부착된 3개의 중간 폭경 브라켓과 각 강선 사이의 운동 마찰저항력을 계측하여 다음의 결론을 얻었다. 1. 좁은 폭경, 중간 폭경, 넓은 폭경 세 종류의 브라켓 모두에서 교정용 선재의 단면 크기가 증가할수록 마찰저항력도 증가하였다. 2. 0.016, 0.018인치 원형 강선은 브라켓 폭경이 증가하면 운동마찰저항력은 감소하며, $0.016\;{\times}\;0.022,\;0.019\;{\times}\;0.025$인치 각형 강선은 브라켓 폭경이 증가하면 운동마찰저항력이 증가하는 경향이 있었고0.016인치 원형 강선과 폭경이 다른 브라켓과의 운동마찰저항력 사이에는 통계적으로 유의차가 없었다. 3. 중간 폭경 브라켓의 수가 증가할수록 마찰저항력은 크게 나타났으며, 그 증가율은 브라켓의 수에 비례하였으나 정수배로 증가하지는 않았고 강선의 굵기에 따라 차이가 있었다.

• 대한소아치과학회지
• /
• 제33권3호
• /
• pp.411-421
• /
• 2006

치열이 발육 중에 있는 소아는 치은 및 치주 질환에 매우 흔하게 이환된다. 이 시기의 치은염은 대개 경미하며 가역적인 경우가 많으나, 만성적으로 진행하여 성인기의 치주질환으로 이행되는 경우도 발생한다. 소아의 치은 평가를 위한 방법으로 흔히 임상적인 치은염 평가 지수나 구강 위생 지수를 측정하게 된다. 치은염 측정 지수의 하나로써 치은 열구액은 치주조직과 치은 열구로부터 유래되는 염증성 삼출물로, 세균성 치태의 점진적인 축적에 대한 반응으로 증가한다고 알려져 있다. 본 연구에서는 소아의 치은 상태 평가를 위해 전북대학교 병원 소아치과에 내원한 3-14세(평균 $8.5{\pm}3.1$세)의 어린이 50명과 23-33세 (평균 $26.1{\pm}3.3$세)의 성인 20명을 대상으로 육안적 지수인 치은지수와 치태지수를 조사하였다. 또한 이와 함께 치은 열구액을 채취하여 그 부피를 Periotron 8000(Oraflow Inc., USA)을 이용하여 측정하였고, 소아와 성인의 수치를 비교 분석한 결과 다음의 결론을 얻게 되었다. 1. 어린이에서 유치열기와 영구치 맹출기, 맹출 완료기의 각 군 간에 치은 열구액 부피를 비교했을 때, 평균치는 영구치 맹출기에서 가장 높게 나타났으나 통계적으로 유의한 차이를 보이지 않았다(p>0.1). 2. 어린이와 성인을 비교하였을 때 치은 열구액 부피는 어린이에서 유의성 있게 크게 나타났다(p<0.001). 3. 어린이와 성인 모두 임상적인 치은지수(GI)와 치태지수(PLI)는 치은 열구액의 부피와 유의성 있는 상관관계를 보였다(GI; r=0.394, p<0.001 PLI; r=0.642, p<0.001). 4. 치은 열구액을 채취한 치아의 교정 치료 유무는 치은 열구액의 부피와 유의성 있는 양의 상관관계를 보였다(p<0.001). 그러나 레진 치료 유무나 치아 우식의 유무는 관계가 없었다(p>0.05). 5. DMFT치는 유치열기에서 영구치열기보다 높게 나타났다(p<0.001). 또한 DMFT치와 치은 열구액 부피는 유의성 있는 상관관계를 보이지 않았다(p>0.1).

• 대한치과보철학회지
• /
• 제47권3호
• /
• pp.328-334
• /
• 2009

연구목적: 하악 제 1 소구치 및 제 1 대구치가 결손 되어 중간 지대치를 갖는 5 본 고정성 국소의치에서 비고정형 어태치먼트의 설계 유무 및 지대치의 지지골 상태에 따른 변위 및 응력분포의 차이를2 차원 유한요소분석을 통해 비교하여 보고자 하였다. 연구 재료 및 방법: 5 본 고정성 국소의치는 일체형과 분할형으로 구분하였으며, 분할형에는 제 2 소구치와 제 1 대구치 사이에 비고정형 어태치먼트를 설계하였다. 지지골은 모두 정상인 경우와 세 개 지대치중 한 개의 지대치에서 임상적 치관 대 치근 비율이 6 : 4 정도까지 골 흡수가 일어난 세 가지 경우를 가정하여 총 네 가지의 지지골 상태를 설정하였다. 제 1 소구치와 제 1 대구치 가공치 중앙에 각각 150 N의 수직 분산하중과, 제 1 대구치 가공치 중앙에 300 N의 수직 집중하중을 가하였다. 결과: 일체형과 분할형 고정성 국소의치 모두에서 하중 시 하방 변위를 보였다. 분할형 고정성 국소의치에서 일체형보다 전방 지대치 지지골에서의 응력은 감소하였으나 중간 및 후방 지대치 지지골에서의 응력은 증가하였다. 지대치의 치조골 흡수가 있는 경우 해당 지대치의 지지골에 국소적인 응력 증가가 나타났다. 결론: 중간 지대치를 갖는 고정성 국소의치를 설계할 경우 유지 장치의 유지 능력과 지대치의 지주 상태 그리고 어태치먼트의 사용에 대한 주의 깊은 고찰이 필요하겠다.

• Journal of Periodontal and Implant Science
• /
• 제48권4호
• /
• pp.213-223
• /
• 2018

Purpose: Oral lichen planus (OLP) is a chronic oral mucosal disease that has been recognized as an immune condition. The purpose of this study was to evaluate factors affecting the clinical outcomes of topical corticosteroid application on OLP lesions using dexamethasone gargle and ointment. Methods: The charts of patients who were clinically diagnosed with OLP and treated with dexamethasone from July 2003 to August 2017 at the Section of Dentistry of Seoul National University Bundang Hospital were thoroughly evaluated to identify subjects who were suitable for this retrospective study. For each patient, age at the index date, gender, medical history, and dental records related to OLP lesions and dexamethasone treatment were reviewed. Results: In total, 113 of the 225 patients were included in the present study. Among them, 79 patients were female (69.9%) and 34 were male (30.1%), with a mean age of 57.6 years. The average duration of dexamethasone treatment was 4.7 months and the mean follow-up period was 2.24 years. Improvements were observed within 1 year after dexamethasone treatment in most cases, and 17.7% of patients had a new OLP lesion after treatment. New OLP lesions were more frequently gingival than mucosal, although mucosal OLP lesions were more common than gingival OLP lesions in all age groups. In age- and gender-adjusted multivariate logistic regression, a history of malignant disease was found to be a significant factor affecting the formation of new lesions. Gingival OLP lesions and intermittent use of dexamethasone showed near-significant associations. In Kaplan-Meier failure analysis, history of malignancy, menopausal status, age, and the site of the OLP lesion were significant factors affecting clinical outcomes. Conclusions: The treatment outcomes of OLP were significantly influenced by age, history of malignancy, menopausal status, and the site of the OLP lesion, but not by factors related to dexamethasone treatment.

• 구강회복응용과학지
• /
• 제17권4호
• /
• pp.245-256
• /
• 2001

The purpose of this study is to analyze the mechanical stress and displacement on the jaws during the simulated bilateral clenching task on the three-dimensional finite element model of the dentated skull with unilateral molar loss. For this study, the computed tomography(G.E.8800 Quick, USA) was used to scan the total length of human skull in the frontal plane at 2.0mm intervals. The fully assembled finite element model consists of the articular disc, maxilla, mandible, teeth, periodontal ligament and cranium. The FE model was used to simulate the bilateral clenching in intercuspal position. The loading condition was the force of the masseter muscle exerted on the mandible as reported by Korioth et al. degrees of freedom of the zygomatic region where the masseter muscle is attached were fixed as restraints. In order to reflect the actual action of the muscles force, the displacement of the region was attached where the muscle is connected to the temporal bone and restraint conditions were given values identical to values at the attachment region of the masticatory muscle but with the opposite direction of the reaction from when the muscle force is acted on the mandible. Although the mandible generally has higher displacement and von Mises stress than the maxilla, its mandibular corpus on the molar-loss side has a higher stress and displacement than the molar-presence side. Because the displacement and von Mises Stress was the highest on the lateral surface of mandibular corpus with molar loss, the stress level of the condyle on the molar-loss side is greater than that of the molar-presence side, which in turn caused the symphysis of the mandible to bend. In conclusion, the unilateral posterior bite collapse with molar loss under para-functional activities such as bruxism and clenching can affect the stress concentration on the condyle and mandibular corpus. It is therefore necessary to consider the biomechanical function of dento-skeleton under masticatory force while designing the occlusal scheme of restoration on alveolar bone with the posterior collapse.

• 한국전자통신학회논문지
• /
• 제7권5호
• /
• pp.1235-1243
• /
• 2012

본 연구는 치과위생사들의 업무실태 및 비중을 조사함으로써 직무의 개선을 통한 체계적이고 바람직한 업무수행을 위한 기초 자료를 제공하고자 시도되었다. 본 연구대상자의 일일 업무비중을 분석한 결과, 진료협조업무의 비율이 35.45%로 가장 높게 나타났고, 치주처치업무 21.54%, 행정 및 관리업무 16.08%, 구강보건교육업무 15.88%, 예방처치업무 11.23% 순으로 나타났다. 구강보건교육내용 및 구강보건교육자료의 종류별 활용비율에서는 대상자별 잇솔질 교육법이 3.70점으로 가장 높게 나타났고, 구강보건위생용품사용법 3.51점, 정기검진에 대한 교육법 3.26점, 치과질환 예방교육법 3.13점, 식이조절교육법 1.39점 순으로 나타났으며, 악치모형물이 38.0%로 가장 많이 이용하는 것으로 나타났고, 구두로 설명 23.9%, 구강내 카메라 12.2% 순으로 나타났다. 따라서 치과위생사의 고유 업무라 할 수 있는 구강보건교육 및 구강질환의 예방관련 업무비율이 높이 않아 이에 지속적인 관심과 활용가치가 높은 다양한 프로그램을 수행하여 향후 환자의 구강보건교육의 질 향상을 도모하기 위한 제도수립이 필요하다고 사료된다.

• Maxillofacial Plastic and Reconstructive Surgery
• /
• 제41권
• /
• pp.4.1-4.10
• /
• 2019

Background: The mandibular third molar (M3) is typically the last permanent tooth to erupt because of insufficient space and thick soft tissues covering its surface. Problems such as alveolar bone loss, development of a periodontal pocket, exposure of cementum, gingival recession, and dental caries can be found in the adjacent second molars (M2) following M3 extraction. The specific aims of the study were to assess the amount and rate of bone regeneration on the distal surface of M2 and to evaluate the aspects of bone regeneration in terms of varying degree of impaction. Methods: Four series of panoramic radiographic images were obtained from the selected cases, including images from the first visit, immediately after extraction, 6 weeks, and 6 months after extraction. ImageJ software^® (NIH, USA) was used to measure linear distance from the region of interest to the distal root of the adjacent M2. Radiographic infrabony defect (RID) values were calculated from the measured radiographic bone height and cementoenamel junction with distortion compensation. Repeated measures of analysis of variance and one-way analysis of variance were conducted to analyze the statistical significant difference between RID and time, and a Spearman correlation test was conducted to assess the relationship between Pederson's difficulty index (DI) and RID. Results: A large RID (> 6 mm) can be reduced gradually and consistently over time. More than half of the samples recovered nearly to their normal healthy condition (RID ≤ 3 mm) by the 6-month follow-up. DI affected the first 6 weeks of post-extraction period and only showed a significant positive correlation with respect to the difference between baseline and final RID. Conclusions: Additional treatments on M2 for a minimum of 6 months after an M3 extraction could be recommended. Although DI may affect bone regeneration during the early healing period, further study is required to elucidate any possible factors associated with the healing process. The DI does not cause any long-term adverse effects on bone regeneration after surgical extraction.

• 한국융합학회논문지
• /
• 제1권1호
• /
• pp.57-67
• /
• 2010

본 연구는 주관적 구강건강수준에 영향을 미치는 요인들을 조사 분석하고, 구강질환 예방과 구강보건 향상을 위한 프로그램을 개발하는데 필요한 기초자료를 제공함으로써 지역사회주민의 건강증진과 삶의 질을 높이는데 목적을 두었다. 조사기간은 2010년 5월 2일에서 6월 22일까지 영남지역 성인을 대상으로 하였으며 조사한 결과 다음과 같다. 주관적 구강상태는 '매우 나쁘다' 는 응답률이 40.4%로 가장 높았고 결손치는 41.3%가 있었으며 보철치는 61.5%가 없었다. 치아우식증은 57.5%가 있었고 치주질환자는 38.6%가 없었으며, 부모님이 틀니를 장착하였다는 자가 41.3%이었다. 구강보건지식수준은 구강건강상태가 좋은 편이고, 보철치가 있으며, 악관절 이상이 없는 자에서 각각 타군보다 높았다. 구강보건 실천수준은 구강건강상태가 좋은 편에서, 보철치가 있는 자에서 각각 높았으며, 식생활 행태수준은 구강건강상태가 좋은 편에서, 치아우식증이 없는 자에서, 악관절 이상이 없는 자에서 각각 타군보다 높았다.

• 한국융합학회논문지
• /
• 제7권5호
• /
• pp.35-42
• /
• 2016

이 연구는 체육 중 고등학생의 구강보건에 관한 특성을 알아보고자 하였다. 2013년 4월부터 6월까지 경산의 체육 중 고등학생 가운데 당일 출석한 250명의 구강건강상태와 구강보건 지식 태도 행동 및 구강악안면 외상을 구강검사와 구조화된 설문지를 사용하여 조사하였다. 구강보건 지식 태도 행동의 일반적 특성은 t-test를 실시하였고, 각 항목별 응답은 빈도분석을 실시하였다. 우식경험영구치율에서 여학생 평균 22.30%, 남학생 평균 15.41%로 여학생이 통계적으로 유의하게 높았으며 치주건강상태 점수는 중학생 평균 1.19점, 고등학생 평균 0.68점으로 중학생의 점수가 통계적으로 유의하게 높았다. 구강보건 지식 점수는 여학생 평균 3.69점, 남학생 평균 2.81점, 구강보건 행동 점수는 여학생 평균 38.26점, 남학생 평균 36.92점으로 여학생이 통계적으로 유의하게 높았다. 그러므로 체육 중 고등학생의 특성을 고려한 구강보건교육 및 맞춤형 구강보건사업의 실시가 필요하다고 하겠다.