• Journal of Industrial Convergence
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• v.21 no.2
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• pp.73-77
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• 2023

This study investigated the level of knowledge about changes in the oral environment according to the presence or absence of smoking in adults in their 20s and 40s. It was conducted to use as basic data for the relationship between periodontal disease and smoking and the importance of concurrent education on smoking cessation during oral health education for adults.In subjective oral condition analysis, 65.4% of non-smokers and 59.0% of smokers thought that it was very good or good. Also, in both the non-smokers and smokers groups, the most common answer was that they thought the cleanliness of non-smokers would be higher. To the question of whether they had ever received anti-smoking education, 63.9% of non-smokers and 76.1% of smokers answered 'yes'. In the education that 'the oral environment changes depending on whether or not there is smoking', the non-smoker group showed 'no' and the smoker group showed 'yes' respectively. As a result, oral health education related to smoking and prevention It is thought that specific and active educational methods should be accompanied for this.

• Journal of Korean society of Dental Hygiene
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• v.11 no.2
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• pp.293-301
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• 2011

Objectives : The aim of the trial was to study the effect of plaque control(tooth brushing instruction) for oral health improvement on periodontitis patients. Methods : 30 patients(35~65 years) with advanced periodontal disease were subjected to a baseline examination including assessment of oral hygiene status(O'leary index), gingival condition(bleeding). the assessment were repeated after 2, 4, 6 weeks. cognitive, behavioral and clinical outcomes were assessed in the primary care setting by questionnaire and clinical oral examination. Results : The oral hygiene status expressed as the individual mean percentage of tooth surfaces with plaque 59.3% at baseline and 21.2% after 6 weeks(p<0.001). The gingival bleeding status expressed as the individual mean point of interdental papilla 3.8 at baseline and 1.9 after 6 weeks(p<0.001). Also, the patients self-assessment about correct tooth brushing behavior was 3.9(5-point likert scales), satisfaction of plan practices 4.1(5-point likert scales), efficacy of tooth brushing instruction 8.7(10-point likert scales). Patients wanted to continuous participation. Conclusions : A verification of effect after individualized oral health instruction and repeated dental plaque control represented to significance on plaque control score, oral care practice and oral health recognition. The important oral care step against periodontal disease is to establish good oral health habits. Also, oral health behavior recognition is more important for the practice of oral health. Therefore professional plaque control and tooth brushing instruction absolutely need in improving oral health.

• Journal of the korean academy of Pediatric Dentistry
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• v.39 no.2
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• pp.192-198
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• 2012

Revascularization of the pulp in a necrotic, infected immature tooth with apical periodontitis was attempting several years. Revascularization of partially necrotic pulp in an immature tooth is based on the concept that vital dental stem cells can survive pulpal necrosis. Revascularization procedure obtains longer and thicker roots in teeth with necrotic pulp diagnosis. Pulp revascularization for immature permanent molars can be possibly applied on cases having difficulty to use conventional root canal treatment due to abnormally thin root canal wall or severe root curvature. Also, when an uncooperative patient does not agree with sedative treatment the revascularization can be useful. And a patient with disability who is barely cooperative can be another indication of this treatment. In this case report, pulp revascularization using triple-antibiotics, metronidazole, ciprofloxacine and minocycline, was applied on the immature first permanent molar infected by caries.

• Journal of the Korea Convergence Society
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• v.13 no.5
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• pp.551-558
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• 2022

The purpose of this study is to identify considerations for oral health and oral health education through group interviews with the general public and those diagnosed with diabetes among the elderly over 65 years of age. The subjects of this study were divided into two groups: 5 healthy people and 5 diabetic patients over 65 who visited the Senior Welfare Center in G city, and each group had a 60-70 minute interview. As a result of the study, four key themes were derived: 'Knowledge on the relationship between diabetes and oral disease', 'Oral health status', 'Oral health management method', and 'Considerations for oral health education'. Healthy people who participated in this study answered that the contents they thought necessary for oral health education were periodontal management method, implant, holistic oral care, and systemic health, and diabetic patients answered that diabetes, periodontal management method, and importance of practicing oral care. Based on the results of this study, it is considered that it is necessary to develop a customized oral health education program for diabetic elderly patients in the future.

• Journal of dental hygiene science
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• v.12 no.5
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• pp.535-544
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• 2012

This purpose of this study was to analysis the relation of awareness and practices of oral health promotion. The subjects in this study were 133 workers who worked in Seoul, Gyeonggi province, and were at the age of 20 and up. The survey was conducted from January 16 to March 31, 2012. The collected data is statistically analyzed by SPSS. For the level oral health awareness of industrial workers, the awareness of prevention of tooth decay and periodontal disease was high, but that of necessity of oral hygiene supplies other than tooth brushing was low. For the level of oral health care practice, they showed the highest awareness for the importance of cleaning a tongue when brushing teeth, and the lowest for the importance of dental care. For oral health awareness according to the general properties, workers with average income of 2~3 million one showed higher oral health awareness than others. For oral health care practice, those who brush their teeth more than 3 times a day and who have visited the dentist during the last year had higher oral health care practice than others. For oral health awareness according to the level of interest in oral health and the status of oral health of the industrial workers, those who have higher interest in oral health turned out to have higher oral health awareness. The relation between oral health awareness and oral health care practice of the industrial workers showed a positive correlation, which indicates that the higher oral health awareness is, the higher oral health care practice is.

• Journal of Korean society of Dental Hygiene
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• v.20 no.1
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• pp.19-27
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• 2020

Objectives: This study aimed to analyze the association between self-assessed periodontal symptoms and glycated hemoglobin levels in patients with type 2 diabetes. Methods: This cross-sectional study involved 156 patients with type 2 diabetes who were aged 50 years or older. Structured questionnaires were used to investigate the self-assessed periodontal symptoms of the patients. The glycated hemoglobin test was performed to evaluate their long-term blood glycemic control. Chi-square test and logistic multiple regression were performed to analyze the factors associated with glycated hemoglobin levels. Results: Compared with patients aged 65 years and above, more patients aged 64 years and below showed poor glycemic control (p=0.020). Further, compared with patients without self-perceived gingival bleeding and halitosis, more patients with these two conditions showed poor glycemic control (p<0.05). Compared with the group of patients without any periodontal symptoms, the group of patients that had at least one periodontal symptom had a higher proportion of patients with poor glycemic control (p<0.001). In the logistic regression model, gingival bleeding and halitosis were the factors most associated with hyperglycemia (p<0.05). Conclusions: The results of our study suggest that gingival bleeding and halitosis can predict hyperglycemia in patients with type 2 diabetes.

• Journal of Periodontal and Implant Science
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• v.36 no.3
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• pp.579-590
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• 2006

1. 연구배경 교원질 분해작용을 하는 호중구의 세포질 효소인 기질금속단백분해효소-8은 치주질환, 류마티스 관절염, 그리고 궤양결장염과 같은 염증성 질환에서 농도가 증가한다고 알려져 있다. 최근에는 A. actinomycetemcomitans의 leukotoxin이 사람호중구에서 기질금속단백분해효소-8의 분비를 유도하는 것이 보고되었다. 이 연구의 목적은 선천면역 체계에서 세포표면 항원무리14, Toll-like 수용기, 그리고 $NF-{\kappa}$ B경로를 통하여 A. actinomycetemcomitans의 지질다당질로 유도된 기질금속단백분해효소-8의 분비 여부와 세포기전을 알아보고자 하였다. 2. 연구재료 및 방법 건강한 개인 제공자(남자 13명, 여자 3명)로부터 얻은 개개인의 20ml 말초혈액을 제조사의 지침에 따라 호중구를 추출한 후 항세포표면 항원무리14와 함께 $4^{\circ}C$에서 30분간 전배양 한 후, $37^{\circ}C$에서 9시간 동안 배양시켰다. 추출한 호중구에 Toll-like 수용기 억제제 또는 $NF-{\kappa}$ B억제제인 TPCK를 첨가한 후 $37^{\circ}C$에서 1시간 동안 전배양하고 $37^{\circ}C$에서 9시간 동안 배양시켰다. 호중구에 세포뼈대 억제제인 cholchicine, nocodazole, demecolcine, 그리고 cytochalasin B를 A. actinomycetemcomitans의 지질다당질과 함께 $37^{\circ}C$에서 9시간 동안 배양시켰다. 기질금속단백분해효소-8 분비량은 효소면역측정법을 통해 결정하였다. 통계처리는 일원배치 분산분석법을 이용하였다(p<0.05). 3. 결과 A. actinomycetemcomitans 지질다당질은 기질금속단백분해효소-8의 분비를 증가시켰다. 기질금속단백분해효소-8의 분비는 항세포표면 항원무리14에 의해서 억제되었지만, 항 Toll-like 수용기2, 항 Toll-like 수용기4 항체는 억제시키지 못했다. $NF-{\kappa}$ B 억제제는 A. actinomycetemcomitans의 지질다당질로 유도된 $NF-{\kappa}$ B 결합 활성도와 기질금속단백분해효소-8 분비를 억제하였다. 미세섬유 중합반응 억제제는 A. actinomycetemcomitans의 지질다당질로 유도된 기질금속단백분해효소-8의 분비를 억제시켰으나, 미세관 중합반응억제제는 억제시키지 못했다. 4. 결론 위의 연구결과를 종합하여 볼 때, 기질금속단백분해효소-8은 A. actinomycetemcomitans의 지질다당질로 유도되며, 세포표면 항원무리-$NF-{\kappa}$ B 경로를 통하여 분비되고, 이 분비 과정은 미세섬유 계통이 관여하는 것으로 보인다.

• Journal of Periodontal and Implant Science
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• v.34 no.3
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• pp.607-622
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• 2004

Recently epidemiologic studies have indicated that the patients with periodontitis may have increased risk of ischemic cardiovascular events, and have suggested the important roles of blood cytokines and acute reactant proteins in the systemic infection and inflammatory response. Periodontitis and coronary heart disease (CHD) may share the common risk factors and the genetic mechanism associated with interleukin(IL)-1A, B and RA genotype may be involved in the production of IL-1. This study was aimed to investigate the relationship between angiographically defined CHD and periodontitis as chronic Gram-negative bacterial infection and to determine whether the IL-1 gene polymorphism is associated in both diseases. Patients under the age of 60 who had undergone diagnostic coronary angiography were enrolled in this study. Subjects were classified as positive CHD (+CHD, n=37) with coronary artery stenosis more than 50% in at least one of major epicardial arteries, and negative CHD (-CHD, n=30) without significant stenosis. After recording the number of missing teeth, periodontal disease severity was measured by means of plaque index (PI), gingival index (GI), bleeding on probing (BOP), probing depth (PD), clinical attachment level (CAL), and radiographic bone loss around all remaining teeth. Gingival crevicular fluid (GCF) was collected from the 4 deepest periodontal pockets and assessed for cytokine ($IL-1{\beta}$, IL-6, IL-1ra, tumor necrosis $factor-{\alpha}$, and prostaglandin $E_2$). Additionally, blood CHD markers, lipid profile, and blood cytokines were analyzed. IL-1 gene cluster genotyping was performed by polymerase chain reaction and enzyme restriction using genomic DNA from buccal swab, and allele 2 frequencies of IL-1A(+4845), IL-1B(+3954), IL-B(-511), and IL-1RA(intron 2) were compared between groups. Even though there was no significant difference in the periodontal parameters between 2 groups, GCF level of $PGE_2$ was significantly higher in the +CHD group(p<0.05). Correlation analysis showed the positive relationship among PD, CAL and coronary artery stenosis(%) and blood $PGE_2$. There was also significant positive relationship between the periodontal parameters (PI, PD, CAL) and the blood CHD markers (leukocyte count, C-reactive protein, and lactic dehyrogenase). IL-1 gene genotyping showed that IL-1A(+3954) allele 2 frequency was significantly higher in the +CHD group compared with the -CHD group (15% vs. 3.3%, OR 5.118,p=0.043). These results suggested that periodontal inflammation is related to systemic blood cytokine and CHD markers, and contributes to cardiovascular disease via systemic inflammatory reaction. IL-1 gene polymorphism might have an influence on periodontal and coronary heart diseases in Korean patients.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.9
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• pp.2478-2484
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• 2009

The purpose of this study is to conduct an oral examination of total 220 students (1st grade) at S Boys' High School in Seoul metropolitan City. The results of oral examination can be outlined as follows: According to survey on experience of oral symptoms 85.5% students had no experience of tooth fracture, 76.8% students had no experience of hemodia, and 90.9% students had no experience of toothache. And it was found that 86.4% students had no experience of periodontal disease, 98.2% students had no experience of intraoral pain, and 88.2% had no experience of subjective halitosis symptom. According to survey on oral health behaviors, 73.6 % students had no experience of visiting any dental clinic over last one year. In particular, it was found that 57.3% students brushed their teeth after breakfast every day, 19.1% students didn't enjoy having any confectionery or sweet stuff, or taking soft drink like coke on a daily basis, and 19.5% students used fluoride toothpaste for toothbrushing as of this survey. According to oral health examination, 55.9% students had no dental caries, and 44.1% students had dental caries. And it was found that most students (79.2%) had dental calculus resulting from periodontal disease.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.11
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• pp.4354-4359
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• 2010

The study performed questionnaire to the patients receiving implant operation, who visited dental clinics and hospitals(2 hospitals and 5 clinics) from Jul. 1, 2009 to Sep. 12, 2009 in order to study the factors giving effects to patient's satisfaction in the selection of implant. 145 questionnaire papers collected from patients were analyzed with SPSS12.0 program. The result revealed that the satisfaction with implant operation was usually normal when implant was operated because of tooth extraction due to dental caries and periodontal disease and it was usually high when implant was operated because of wound(P<0.05). When considering each cause of tooth extraction, the satisfaction with pronunciation function was usually normal(P<0.001), the satisfaction with functional part including foreign body sense was very low when the cause of operation was periodontal disease(P<0.01). The satisfaction with hospital environment depending on the cause of hospital selection was usually high when hospital was selected because of doctor's fame. It was low when hospital was selected because it was close to home(P<0.001). The satisfaction with the number of hospital visits depending on the number of implanted teeth was usually low when many teeth were implanted(P<0.01). The analysis on the satisfaction with tooth shape and color showed that the satisfaction was high when '1~2' teeth and 'more than 6' teeth were implanted(P<0.05). In order to improve patient's satisfaction with implant, it is necessary to recognize individual's oral status and request correctly. It is determined that proposal of operation period, number of hospital visits, function and expected aesthetic satisfaction degree will contribute to the improvement of mutual reliance between doctor and patient and post-operation satisfaction degree.