• Korean Journal of Health Education and Promotion
• /
• v.27 no.1
• /
• pp.61-69
• /
• 2010

Objectives: The aim of this study was to examine socioeconomic inequalities in oral health and to investigate the extent to which socioeconomic disparities in oral health are attenuated by oral health related consciousness and behaviors. Methods: We used data from the third 2006 Korea National Oral Health Survey(KNOHS) and a total of 3,457 subjects aged over 18 years were analyzed. The dependent variable was periodontal conditions which is devided into dichotomy, that is, health and ill-health, using the Community Periodontal Index(CPI) in KNOHS. Socioeconomic status(SES) were measured by educational attainment, income and residential area. Age, gender, oral health consciousness(self-assessed oral health status, concern about oral health and self-perceived dental treatment needs and behaviors(brushing, use of dental floss and dental visits) were adjusted in binary logistic regression analysis. Results and Conclusion: The results show that oral health consciousness and behaviors do not mediate the relationship between SES and periodontal health and there might be limitations to attenuate socioeconomic disparities in oral health only by changing of either oral health consciousness or(and) behaviors. Our findings suggest that more definite oral health policies and dental health education among adults with lower education will need in order to improve oral health.

• Journal of Periodontal and Implant Science
• /
• v.31 no.4
• /
• pp.803-810
• /
• 2001

The purposes of this study were to investigate the relationship between cigarette smoking levels and periodontal status. 199 subjects, consisting of male 127 and female 72, classified by smoking levels and duration were selected: Patients who had smoked for more than 20 cigarettes/day were considered heavy smokers, 10 to 19, moderate smokers; 1-9, light smokers:0, non-smoker. And smokers were divided into ones who had smoked for more than 20 years, 10-19 years, less than 10 years and non-smokers. Heavy smokers and moderate smokers showed significantly greater pocket depths, less clinical attachment levels, more molar furcation involvements, greater alveolar bone loss and higher scores of plaque index than light smokers and non-smokers,(p < 0.05). When the duration of smoking was considered as a factor, scores of clinical parameters were worse and alveolar bone loss were significantly greater in long-term smokers, who had smoked for more than 20 years. In conclusion, cigarette smoking is associated with periodontal status.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.15 no.6
• /
• pp.3706-3713
• /
• 2014

This study examined the demographic and oral behavioral risk factors for periodontal disease in adult workers. The research subjects and method were conducted targeting 1,650 Korean adult workers aged 20-64 utilizing the data from the fifth Korea National Health and Nutrition Examination Survey (KNHANES V-3). As a result of this study, the periodontal tissue patients showed the risk factors for gender, age, income level, educational level, systemic disease, sleep hours, oral health level, biting trouble, and chewing difficulty. In terms of the greatest influence, the workers with problems with biting and chewing had a more than 3.5 times higher likelihood of being affected by periodontal disease. The findings of this study show that there are a variety of risk factors for periodontal diseases in Korean workers. To reduce the prevalence rate of periodontal disease, regular checkups including dental checkups and sufficient sleeping will be necessary, and the level of stress should be decreased. In addition, the government should take the required measures to remove the socioeconomic inequality, such as income gap or educational divide.

• Journal of the Korea Convergence Society
• /
• v.9 no.12
• /
• pp.295-299
• /
• 2018

The aim of this study was to evaluate the association between the level urine cotinine and periodontal diseases in Korea adults. The date from the 2014, 2015 Korean National Health and Nutrition Survey were used, and 5,146 subjects over 30 years were included in the analysis. Periodontal disease was assessed using the Community Periodontal Index. Binary logistic regression model was used to estimate the odds ratio with 95% confidence intervals. There was a 2.08-fold (95% CI; 1.73-2.05) increased in the odds of periodontal disease for those with any ETS exposure compared with those with non-smokers following adjustment for sex, age, education, and income. The level of urine cotinine also showed a dose-dependent increase in extent of periodontal disease. Among persons in the Korea who had never used tobacco, those exposed to ETS were more likely to have periodontal disease than were those not exposed to ETS. In the future, voluntary compliance of smokers to measures to reduce ETS exposure should be encouraged.

• Journal of Periodontal and Implant Science
• /
• v.49 no.4
• /
• pp.206-214
• /
• 2019

Purpose: The purpose of this study was to examine the association between the intake of semi-solid yogurt and periodontitis in Korean adults using a national database. Methods: The data analyzed in this study are a subset of the sixth Korean National Health and Nutrition Examination Survey conducted in 2015 by the Korea Centers for Disease Control and Prevention. The sample size for this study was 4,727. We collected data on sociodemographic characteristics, oral health-related variables, oral and general health status, and intake of semi-solid yogurt. Semi-solid yogurt intake (YI) was calculated by multiplying the frequency of YI over the previous week by the average intake per serving. We assessed periodontal conditions using the Community Periodontal Index (CPI) and defined periodontitis as a CPI score ${\geq}3$. Multivariate logistic regression analyses were performed after adjusting for sociodemographic variables, and oral and general health behaviors and status. Results: The mean weekly YI among those without periodontitis ($1.03{\pm}0.06cups$) was significantly higher than among those with periodontitis ($0.77{\pm}0.08cups$) (P<0.001). Individuals who consumed more than 2 cups of yogurt per day were 76% less likely to have periodontitis than those who consumed less than 1 cup of yogurt per week after adjusting for all covariates (odds ratio, 0.24; 95% confidence interval, 0.10-0.60). Conclusions: We found a significant association between increased intake of semi-solid yogurt and periodontal health. We therefore recommend daily consumption of semi-solid yogurt as a probiotic to improve periodontal health. Further longitudinal studies are required to elucidate plausible mechanisms through which probiotics impact periodontal disease, considering both periodontal pathogens and clinical periodontal parameters.

• Journal of Periodontal and Implant Science
• /
• v.25 no.3
• /
• pp.539-556
• /
• 1995

Periodontal therapeutic modalities should be re-establishing and regenerating the periodontal tissue previously lost to the disease. To achieve periodontal regeneration, periodontal ligament cells must selective migrate to the deneded root surface, attached and proliferated it. Local pH concentration is one of the most factors that periodontal regeneration. The aims of this study were to examine on biological effects of pH to the human periodontal ligament cells in vitro, especially on the cell morphology, attachment, activity, vitality and viability. Human periodontal ligament cells were cultured from extracted tooth for non-periodontal reason. Immediately after extraction, any soft tissue adhering to the cervical parts of the roots was carefully removed with a sterile curette. To produce different pH levels in the media, Eagle's MEM was adjusted from pH 6.6 to 8.2 in 0.2 intervals with 1 M NaOH and 1 N HCl. After cultivation, Then, Periodontal ligament cells were cultured at pH ranging from 6.6-8.2. attachment assay was done at 1, 2 day incubation and activity assay was done at 1, 2, 3 day incubation. The experiments were evaluated by scaning electron microscopic techniques (HITACHIX-650 Scaning Electron Microanalyzer, Tokyo, Japan), MTT assay, and the cultured periodontal ligament cells were fixed in neutral formalin for 24 hours and immunohistochemically processed by PCNA for proliferating ability. The surviving cells in the medium showed slightly increased volume and widening intercellular distances at low concentration of pH than control group (pH 7.4), and apparently shrinkage at high concentration of pH than control group (pH 7.4). The results of the statistical analysis from the experiment on attachment, vitality and viability were as follows. Attachment of periodontal ligament cells at 1st and 2nd day, similar attachment rate of low concentration pH compared with control value (pH 7.4). But above pH 8.0, attachment rate were statistically significant decrease from control value(P<0.05). Periodontal ligament cell's activities were maximum at pH 7.6 by MTT assay. Similar with control value at low concentration of pH. But, the activities were statistically significant decrease at high concentraration of pH(P<0.05). Cellular proliferating rate (PCNA index) were statistically significant decrease from control value at low and high concentration of pH(p<0.05). This results suggested that hjgh concentration pH, in other words, alkali pH was cytotoxic effects on human periodontal ligament cells in vitro.

• Journal of Korean society of Dental Hygiene
• /
• v.12 no.3
• /
• pp.631-640
• /
• 2012

Objectives : This study mean to confirm the antibacterial activity of a garlic extract widely culturing in our region and was to determine the effect of dentifrice containing 0.1% extracts of garlic on dental plaque and gingivitis in a double blind and clinical studies in 50 healthy adults aged from 20 to 22 years who provided a consent for their participation. Methods : The antibacterial activity was evaluated using triple distilled water and the Kirby-Bauer disk diffusion method and the minimal inhibitory concentration(MIC) against various pathogens for periodontal disease, such as P. gingivalis 381(ATCC33277), was estimated. The experimental groups classified according to the concentration of garlic extract used: 10,000ppm(A), 5,000ppm(B), 2,500ppm(C), 1,000ppm(D). Oral examination of subjects was performed through clinical periods and on day of baseline, 6, 12, 19, 25 days plaque index and gingival index were scored by Turesky' modified index and Loe & Silness index. After 12, 19, 25 days use of their respective dentifrices, statistically decreases of plaque index, gingival index were shown in both the experimental and the control group, respectively. Results : There was significant antibacterial activity in the "2,500ppm(C)" group against P. gingivalis 381. Experimental group exhibited significantly the lower plaque levels and the higher levels of gingival health by the use of the dentifrices contained extract of garlic from 6 days compare with control group(p<0.05). The degree of decrease was more significant on gingivitis level of the experimental group than the control group(p<0.05). Conclusions : This findings indicated that the oral products containing a garlic extract is effective in preventing and treating periodontal diseases, and has potential value in inhibiting periopathogens.

• Journal of Korean society of Dental Hygiene
• /
• v.17 no.2
• /
• pp.215-224
• /
• 2017

Objectives: The objective of the study was to investigate the oral health index in orthodontic patients by dividing the patients into two groups; the OHCP (Oral Health Care Program)group and the control group. Methods: The subjects in Busan were divided into two groups, including the OHCP group (205 patients) and the control group (119 patients), during orthodontic treatment that took place from October 2015 to October 2016. The oral health index was subdivided into three groups according to the oral interest level of the OHCP and control groups. The oral health index used was Simplified Oral Hygiene Index (S-OHI) and Community Periodontal Index of Treatment Needs (CPITN). Results: When the degree of oral interest was compared, he OHCP group before application and after application saw a significant difference (p<0.001) in all the variables except the S-DI. Meanwhile, the control group saw no significant difference in most variables. after OHCP application, The OHCP group was significant differences in all variables (p<0.001), and the control group was no significant difference in most variables. Conclusions: Oral hygiene management for orthodontic patients should be systematically and professionally programmed differently from that for general dental treatment patients. As such, dental hygienists should take this into consideration and proactively develop and research programs similar to OHCP for orthodontic patients.

• Journal of Oral Medicine and Pain
• /
• v.1 no.1
• /
• pp.8-13
• /
• 1973

The authors had studied the oral environmental changes by salivary salivary pH, amount, periodontal Index in patient with active pulmonary tuberculosis patients. Among the subjects, The experimental group was consisted of 100 patients (50 males and 50 females) of 20-29 years and 100 persons of control group (50 males and 50 females) of 20-29 years. The measurement of salivary amount was performed with wide mouthed plastic (2 Inches) bottle for avoidance of Ionization of SiO2 by using of glass bottle and salivary pH was checked by pH meter 27 radiometer Copenhagen. The results are as follows : 1. The slivary pH does not appear to be characteristic of tuberculous paticents. 2. The obtained salivary amount indicated no significant to the tuberculous patients as compared to the obtained supposedely wealthg individuals. 3. The Russel Index wasfound higher and there had found more periodontal involvement(3 times than normal) in the experimental group.

• Journal of Periodontal and Implant Science
• /
• v.23 no.1
• /
• pp.135-143
• /
• 1993

The investigation was undertaken to determin the altered function and structure of granulation tissue fibroblasts. Human granulation-tissue fibroblasts were cultured from periodontal chronic inflammatory lesions (SBI index : above 3) and compared with healthy gingival connective tissues fibroblasts a control(SBI index : below 1). Granulation tissue fibroblasts proliferated with a slower growth rate and exhibited larger cell size than control cells. Total protein profile of granulation tissue fibroblasts was almost identical to that of control cells with some exception. These results support tha theory that granulation tissue fibroblasts represent a distinct phenotype of fibrotic cells.