• 대한치위생과학회지
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• 제1권1호
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• pp.37-46
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• 2018

This study conducted a 'specialist tooth brushing' method against the severely disabled once every other week. The purpose of this study is to analyze and validate the effectiveness of maintaining healthy periodontal management when consistent oral hygiene lasts with minimum stimuli for 24 - months. The conclusions were as follows. Table 2 compares the difference between group 1 and 2 from the 1^st to 11th management and verifies the actual difference in measurement of each index. Group 1 used a professional tooth brush while Group 2 used a general brush. There were found many significant differences in dental index. As for PHP, Oral Malodor index and gingival bleeding, it was found that one or two times of dental care can make substantial differences in dental health condition. These results show that as the number of toothbrush method has been increased, gingival bleeding and periodontal index are significantly improved, not to mention the improvement of gingivitis and periodontal disease. This is because periodontal tissue is affected by brushing method, brushing time and consistency of dental care. During the 6-month period, 20 minutes of active periodontal care was intensively conducted, and for 18-months the effect of consistent care was verified by 10-minute periodontal care once every other week. As a result of the test, it was found that there was no complete regression in the basic periodontal treatment and the periodontal health condition had been maintained for 24 months. Also this test shows that, despite of inconsistent dental hygienic care, regular plague control can prevent dental diseases and maintain the dental health. This study proved that periodontal condition can be maintained by periodontal care once every other week as the tooth brushing properly stimulates the gums with positive effect. Therefore, professional dental healthcareworkers should be designated for each facility for the disabled, and dental health of the disabled should be professionally cared on a regular basis, and consistent and repetitive management by the dental care specialist are required.

• International Journal of Oral Biology
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• 제42권4호
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• pp.155-161
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• 2017

Teeth and bones are highly mineralized tissues containing inorganic minerals such as calcium phosphate, and a growing number of evidences show that their mineral content is associated with many diseases. Although the quantification of mineral contents by micro-computed tomography(micro- CT) has been used in diagnosis and evaluation for treating bone diseases, its application for teeth diseases has not been well established. In this study, we attempted to estimate a usefulness of a high-resolution micro-CT in analysis of human teeth. The teeth were scanned by using the Skyscan 1172 micro-CT. In order to measure tooth mineral content, beam hardening effect of the machine was corrected with a radiopaque iodine-containing substance, iodoacetamide. Under the maximum resolution of $6.6{\mu}m$, X-ray densities in teeth and hydroxyapatite standards were obtained with Hounsfield unit (HU), and they were then converted to an absolute mineral concentration by a CT Analyzer software. In enamel layer of cusp area, the mean mineral concentration was about $2.14mg/mm^3$ and there was a constant mineral concentration gradient from the enamel surface to the dentinoenamel junction. In the dentin of middle 1/3 of tooth, the mean mineral concentration was approximately $1.27mg/mm^3$ and there was a constant mineral concentration gradient from the outer of root to the pulp side, ranging from 1.3 to $1.06mg/mm^3$. In decay region of dentin, the mineral content was gradually decreased from the intact inner side to the decayed surface. These results suggest that high-resolution micro-CT can be as a useful tool for non-invasive measurement of mineral concentration in teeth.

• 한국학교보건학회지
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• 제15권1호
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• pp.83-92
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• 2002

This study was undertaken to verify various relations between dental health belief and related behaviors in mothers and children. Data for this study were obtained by 264 pairs of 1st and 3rd grade elementary school children and their mothers by self developed questionnaire, The questionnaires are made on the general socio-economical characteristics, the oral health knowledge and the behaviors relative to the oral health and oral health education as to how mothers implement the oral health related activities for their children, while for the children, the questionnaires have been measured relative to the oral health beliefs and health behaviors for the children. The obtained results have shown that mothers become with more ages, the usefulness to prevent children's oral diseases becomes lower, and as much as mothers have higher education level, the sensitivity relative to the oral diseases has been measured low. To the degree that the students live well in economical respect, it has been found that they placed more importance on the oral health. As much as the number of mothers tooth brushing becomes made more in a day, the tooth brushing of the children becomes more that much, and also has higher level of oral health beliefs. The number of children to see dentists has been found high, and to the extent of increasing frequency of visiting dental clinics. As the number of mothers tooth brushing education becomes made more frequent for the children. Also, as mothers put more restriction on the sugar intakes by the children, they placed higher importance on the oral health for their children. In conclusion oral health behavior in mothers' influence on dental health belief of their children, it has been reviewed necessary to activate more the mother-children joint oral health education and oral health projects that mothers and children take part together, as well as to study more in accurate and systematic approaches through more comprehensive and various subjects and elements further in the future.

• Parasites, Hosts and Diseases
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• 제45권3호
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• pp.191-198
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• 2007

A total of 205 larval gnathostomes were collected from 18 (22.5%) of 80 red banded odd-tooth snakes, Dinodon rufozonatum rufozonatum, which had been smuggled from China and confiscated at Customs in Susan, Republic of Korea. In order to identify the species, some of the larvae were observed by a light microscope and a scanning electron microscope (SEM). The larvae were $2.18{\times}0.29mm$ in average size, and had a pair of lips at the anterior end, a muscular esophagus, 2 pairs of cervical sacs, and brownish intestines. The head bulb was characteristically equipped with 4 rows of hooklets; the average number of hooklets in each respective row was 38.6, 40.5, 41.5, and 43.7. In SEM views, the mouth evidenced a pair of lateral lips of equal size in a half-moon shape. Each lip featured a couple of labial papillae and a small amphid located between the 2 papillae. The hooklets on the head bulb had single-pointed, posteriorly-curved tips. The cuticular spines were larger and more densely distributed on the anterior part of the body, and decreased gradually in size and number toward the posterior body. On the basis of these morphological characteristics, the larvae were identified as the third stage larvae of Gnathostoma hispidum.

• 보건의료산업학회지
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• 제13권4호
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• pp.229-241
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• 2019

Objectives: This study analyzed the relationship between dietary behavior and health-related characteristics and experiences of major oral disease symptoms using online raw data on adolescent health behavior. Methods: Using the raw data on 61,858 adolescents collected through the 13th Adolescent Health Behavior Online Survey, a complex samples logistic regression analysis was conducted to assess risks of major oral diseases. Results: The less one consumes sweet drinks and the more one eats vegetables per day, the less likely one is to experience symptoms of tooth decay and periodontal diseases. Undergoing scaling and oral health education help prevent major oral diseases. Brushing after school lunch prevents periodontal diseases and foul breath, and using dental floss and interdental brush also help prevent periodontal diseases. Conclusions: To minimize experiences of oral diseases during adolescent years, it is necessary to periodically scale teeth and provide knowledge regarding the personal management of dental plaque through school oral health education.

• Tuberculosis and Respiratory Diseases
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• 제40권4호
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• pp.442-448
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• 1993

저자들은 최근 약 30년전 치과에서 발치도중 치아 흡인되었으나 환자가 모르고 지내오다 5개월 전부터 시작된 좌상부 흉통을 주소로 내원, 폐엽절제술후 치아 흡인으로 인한 기관지폐쇄로 확인된 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다.

• 한국치위생학회지
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• 제12권6호
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• pp.1173-1182
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• 2012

Objectives : The purpose of this study was to examine the factors related to the dental caries and periodontal diseases of Korean elderly people in terms of demographic characteristics, oral health promotion behavior and systemic diseases in an effort to provide information on national policy setting and policy evaluation about the prevention of tooth loss resulting from severe oral diseases and the promotion of elderly people's oral health. Methods : The first-, second- and third-year raw data of the 4th National Health and Nutrition Survey were utilized, and the data of 3,882 elderly people who got a dental checkup were analyzed. The statistical package SPSS WIN 19.0 was employed to make a logistic regression analysis. Results : The senior citizens who did toothbrushing less frequently were more likely to have dental caries. As for periodontal diseases, the men were 1.34-fold more likely to have periodontal diseases than the women, and the respondents whose self-rated health state was worse were 1.40-fold more likely to have periodontal diseases than the others whose self-rated health state was better. The senior citizens who ever received treatment from unqualified people were 1.30-fold more likely to have peridontal diseases, and those who took neither vitamin compound nor minerals were 1.30-fold more likely to have periodontal diseases. Those who suffered from low High-density Lipoprotein cholesterol(HDL) were 1.35-fold more likely to have periodontal diseases than the others who didn't. Conclusions : Those whose self-rated health status is worse should especially be concerned about periodontal diseases. Specifically, it's needed to pay attention to the low-income classes, and the government should take measures to provide quality welfare services for elderly people not to receive treatment from unqualified people. Besides, research efforts should be made to determine the relationship between periodontal diseases and low HDL-cholesterolemia.

• 구강회복응용과학지
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• 제35권2호
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• pp.98-104
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• 2019

의도적 재식술은 흔히 근관 치료가 실패한 경우 사용되는 치료법이나, 중도의 치주 질환에 이환된 치아에서는 대개 추천되지 않는다. 그러나, 일부 연구들은 의도적 재식술을 이용하여 치주 질환에 이환된 치아를 성공적으로 치료한 것을 보고한 바가 있다. 본 연구에서는 중도 치주염에 이환된 치아를 의도적 재식술을 이용하여 치료한 증례를 보고하고자 한다. 해당 치아는 근관-치주 복합 병소로 진단 후 근관치료를 선행하였으나 광범위한 골소실을 나타냈으며, 이에 의도적으로 발치 후 치근 표면의 국소 인자를 완전히 제거한 후 재식하였다. 의도적 재식술을 이용하여 본 증례에서 중도 치주염에 이환된 치아를 발치하지 않고 3년간의 경과 관찰 기간 동안 보존할 수 있었다.

• International Journal of Oral Biology
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• 제45권4호
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• pp.190-196
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• 2020

Several factors, including genetic and environmental insults, impede protein folding and secretion in the endoplasmic reticulum (ER). Accumulation of unfolded or mis-folded protein in the ER manifests as ER stress. To cope with this morbid condition of the ER, recent data has suggested that the intracellular event of an unfolded protein response plays a critical role in managing the secretory load and maintaining proteostasis in the ER. Tauroursodeoxycholic acid (TUDCA) is a chemical chaperone and hydrophilic bile acid that is known to inhibit apoptosis by attenuating ER stress. Numerous studies have revealed that TUDCA affects hepatic diseases, obesity, and inflammatory illnesses. Recently, molecular regulation of ER stress in tooth development, especially during the secretory stage, has been studied. Therefore, in this study, we examined the developmental role of ER stress regulation in tooth morphogenesis using in vitro organ cultivation methods with a chemical chaperone treatment, TUDCA. Altered cellular events including proliferation, apoptosis, and dentinogenesis were examined using immunostaining and terminal deoxynucleotidyl transferase dUTP nick end labeling assay. In addition, altered localization patterns of the formation of hard tissue matrices related to molecules, including amelogenin and nestin, were examined to assess their morphological changes. Based on our findings, modulating the role of the chemical chaperone TUDCA in tooth morphogenesis, especially through the modulation of cellular proliferation and apoptosis, could be applied as a supporting data for tooth regeneration for future studies.

• 치위생과학회지
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• 제8권1호
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• pp.1-6
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• 2008

부산 시내에 소재하는 1곳의 치과의원에 영구치 발치를 위해 내원한 1,119명의 환자의 1,878개 치아를 대상으로, 발거원인 비중 및 발거연령을 조사한 본 연구에서 얻은 결론은 다음과 같다. 1. 발거된 영구치아의 발거원인으로는 치아우식증 25.9%, 치주병 56.5%로 나타났다. 2. 30대 전에는 치아우식증에 의한 발거가 치주병에 의한 발거보다 많았으며, 30대 이후부터는 치주질환에 의한 발거가 치아우식증에 의한 발거보다 많았다. 3. 영구치의 발거빈도를 비교하면, 남자가 여자보다, 상악이 하악보다 발거빈도가 높게 나타났다. 4. 가장 많이 발거하는 치아는 제3대구치로 주로 지치주위염 및 맹출 장애로 발거되었다. 5. 치아 중에서 하악 견치가 가장 오래 생존하였으며, 제3대구치를 제외하고 하악 제1대구치가 가장 먼저 발거하였다. 이런 결과는 구강건강의 최대 파괴현상인 치아의 발거원인과 발거연령을 분석하여 구강보건 문제를 해결하는 데 기초자료로 도움이 되리라 사료된다.