Abstract : Objectives: The purpose of this study is to investigate the impact of COVID-19 on dental technicians and dental laboratories. Methods: In June 2020, self-reported questionnaires were distributed to and completed by dental technicians who attended the Seoul Dental Technologist Association’s academic conference (n=210). The responses were cross analyzed with frequency analysis (α=0.05). Results: Due to COVID-19, the number of employees has decreased to less than 20%, and sales of dental laboratories have decreased by 21-40%. On the Likert 5-point scale for individual precautions, ‘I wear a mask when using public transportation’ was the highest at 4.80. If infected with COVID-19, ‘my family’s infection is most concerned’ was the highest 3.89, but there was no significant difference between having children under the age of 13 in the family and having an elderly family over 65 years old (P>0.05). Conclusions: To prevent infection by dental technicians, it is mandatory to check body temperature when going to work and refrain from eating while working. As COVID-19 continues for a long time, it is necessary to continuously investigate the status of infected persons among dental technicians and vaccination rates as health care workers.
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Abstract : Objectives: This study aimed to evaluate the effect of detergents containing a centella quantitative extract and dipotassium glycyrrhizinate and potassium nitrate on patient hygiene performance index, gingivitis index, gingival bleeding index, EPT, and halitosis. Methods: A parallel comparison, randomized, double-blind, controlled trial was conducted for 8 weeks with 60 adult men and women as participants. Results: According to the PMA index, gingival index of Talbott, gingival hemorrhage index, Turesky’s plaque index, and bad breath measurement, there was a statistically significant difference between the experimental group and the control group after 4 weeks (P
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Abstract : Objective: This study aimed to investigate the characteristics of the high-risk group for dental caries among 12- and 15-year-old children in Laos. Methods: Oral health survey was conducted on 12-year-old (N=537) and 15-year-old (N=490) children in Laos. The oral examination data were listed from highest to highest based on the permanent caries experience index. Then the caries experience permanent index of the participants corresponding to the top third was calculated. In the final high-risk group, 179 and 163 children aged 12 and 15 years, respectively, were analyzed for the Significant Caries (SiC) Index. Results: The Decayed, Missing and Filled Teeth (DMFT) index of 12-year-old children in Laos was 1.59 (urban area 1.72, rural area 1.46), and the SiC index of the high-risk group for dental caries was 3.93 (urban area 4.01, rural area 3.85). DMFT index of the 15-year-old group was 2.04 (2.37 in urban areas, 1.74 in rural areas), and the SiC index of the high-risk group for dental caries was 5.17 (5.90 in urban areas, 4.49 in rural areas). Conclusions: Children aged 12 and 15 in the high-risk group for dental caries in Laos showed a higher caries experience permanence index than the overall average in the high-risk group. Based on the outcome of the investigation that the high-risk group had a lot of experience with dental caries, it is thought that the priority dental caries prevention project for the high-risk group of dental caries should be carried out.
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Abstract : Objectives: The purpose of this study is to investigate the trend of dental caries inequalities according to the household income level of children and adolescents, using data from Wave 4 (2007-2009) to Wave 7 (2016-2018) of the Korea National Health and Nutrition Examination Survey (KNHANES).Methods: The raw data were obtained from the website of KNHANES. The data by year within each wave were integrated and used for the analysis. In accordance with the guidebook for data users, the experience rate and prevalence rate of dental caries in primary and permanent teeth were estimated. Additionally, the absolute difference (AD) between the lowest and highest household income levels and the prevalence ratio (PR) by household income level were calculated.Results: The AD in the experience rate of dental caries showed a tendency to marginally decrease in primary teeth and moderately increase in permanent teeth. The PR was not statistically significant (P>0.05) in all waves. The AD in the prevalence rate of dental caries decreased by 5.4% and 8.2% in primary and permanent teeth, respectively. The PR in Wave 7 showed that all statistical significance disappeared (P>0.05).Conclusions: In Korean children and adolescents, dental caries inequalities by household income level showed a tendency to gradually decrease in primary or permanent teeth, and statistical significance was no longer confirmed.
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Abstract : Objectives: This study aimed to evaluate the antibacterial activity of phytoncide on oral biofilm. Methods: Antibacterial activity of phytoncide was examined on the bacteria Streptococcus mutans, Aggregatibacter actinomycetemcomitans, Enterococcus faecalis, Porphyromonas gingivalis, and oral biofilm. After mixing the phytoncide, S. mutans, A. actinomycetemcomitans, E. faecalis, and P. gingivalis with a culture alone turbid and mixed, and they were then incubated at 37°C under anaerobic conditions and cultured. Following incubation, a microplate reader was used to measure the absorbance and observe the amount of bacteria. In addition, non-polarized saliva containing bacteria was grown for 72 h under anaerobic conditions for the determination of biofilm biomass and bacterial numbers. Various concentrations of phytoncide were added to the saliva biofilm. Statistical significance tests were conducted using the Mann-Whitney test and SPSS 24.0. Results: S. mutans, A. actinomycetemcomitans, E. faecalis, P. gingivalis, and antibacterial effects were shown as phytoncide concentrations increased in oral biofilm. Observing the growth of bacteria using phase difference microscopes showed that the number of bacteria decreases as the phytoncide concentration increased. Also, the formation of biofilm in the saliva decreased compared to the control group. Conclusions: Based on the experimental results of phytoncide on oral biofilms causing oral cavity formation in the saliva decreased compared to that in the control group. Phytoncide showed antibiosis against oral biofilms when it remained inside the mouth for above certain concentrations. Accordingly, using phytoncide as a clinical method for preventing oral disease is deemed to be effective.
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Abstract : Objectives: The purpose of this study was to evaluate the tooth erosion potential of liqueur and to confirm the anti-erosive effect of calcium. Methods: After purchasing commercially available liqueur in Korea and measuring the pH, products with low pH and high consumption were selected and used as experimental beverages. Calcium (1%) was added to the selected beverages. Chamisul was used as a negative control, and Coca Cola was used as a positive control. Healthy bovine teeth samples were soaked in the selected beverages for 1, 3, 5, 10, 15, and 30 minutes. The changes in the tooth surface after beverage treatment were observed and analyzed using microhardness (VHN, Vickers hardness number) and scanning electron microscopy. Results: Jinro Grapefruit (-88.03±13.05) had the highest surface microhardness difference (ΔVHN) before and after 30 minutes of treatment in each group, followed by Coca Cola (-61.31±21.90) (P0.05). When comparing changes in surface microhardness over time, Jinro Grapefruit+Calcium (pH 3.75) had slightly lower surface microhardness than Chamisul, but the difference was not statistically significant. Jinro Grapefruit+Calcium has a lower surface microhardness change value than Coca-Cola and grapefruit dew group (P
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Abstract : Objectives: Disabled people experience difficulties in accessing dental services. Some of them tend to rely on charity dental services due to financial reasons. The purpose of this study is to identify some of the treatment statuses of disabled people to aid in planning oral health policies.Methods: This study analyzed the dental records of 141 patients from 2014 to 2019 in a charity dental clinic in Cheongju City. The demographic characteristics such as gender, age, area, social security, and type of disability of the patients were analyzed. Chi-square test and logistic regression analyses were performed to investigate the sociodemographic factors related to dental treatments.Results: Within the study population, 63.1% were men and 66.0% were older, over 40 years old. The type of disabilities showed significant differences in the possibilities of having periodontal treatments. The older people showed almost four times a higher risk of experiencing dental extractions than those who were younger, even after adjustments with sociodemographic factors.Conclusions: Among disabled people, an older age corresponds to a much higher probability of extraction, making chewing difficult and leading to the deterioration of general health. It is therefore necessary to conduct a detailed and extended national oral health survey on people with disabilities to allow for the provision of systematic support.
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Abstract : Objectives: This study aims to understand the perceptions regarding preventive dental services among dental professionals. Methods: In-depth interviews were conducted with three groups of dental professionals―dentists, dental hygienists, and dental hygienists that specialized in preventive service―who were selected using a convenience sampling method. Results: First, there was limited awareness among dentists regarding the need for preventive care, because of the treatment-oriented philosophy and scarcity of preventive care success models. Second, dental hygienists commented that there was a lack of the person in charge and systematic process for preventive services. It would not help when they decided to change working place even though they had high anxiety working for preventive care. However, both these professionals agreed that preventive treatment is important as the core of care and that it was important to develop various improvement methods to promote preventive services. Conclusions: To activate preventive services in dental clinics, it is essential to improve the operating system and encourage dental professionals to realize the importance of preventive services.
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Abstract : Objectives: This study aims to examine the factors affecting resilience in dental hygiene students. Methods: The participants were 200 dental hygiene students. Data were collected from June 1 to August 30, 2021 and analyzed using t-test, ANOVA, Pearson’s correlation coefficient, and multiple regression by using PASW Statistics 26.0. Results: Subjects’ mean scores of resilience, self-esteem, social support, and emotional intelligence were 2.99, 3.61, 3.78, and 3.25, respectively. There were significant differences in the level of resilience among credit, stress relief methods, subject health status, satisfaction of major, and aptitude for dental hygiene (P
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Abstract : Objectives: The purpose of this study was to identify whether stress experienced by those working in the local civil service was related to their oral health during the COVID-19 pandemic. Methods: A survey was conducted on 431 civil servants from eight districts, currently working in the Daegu City Hall had COVID-19 related work duties during the pandemic. Results: Several factors associated with oral health related quality of life were explored. Demographic details revealed that men had significantly better oral health related life quality as compared to women; further, being younger, being unmarried, and having a lower position had better outcomes for oral health related quality of life. Regarding the relationship between oral health behavior and oral health related quality of life, it was found that the better the subjective oral health, the higher the rate of not visiting the dentist in the past year. The COVID-19 pandemic has been a particularly important time to explore in order to understand how the stress experienced by local government officials is related to their oral health. It has been especially noted that the higher the work stress, the worse the oral health related quality of life amongst individuals. Conclusions: Results of this study emphasize that at a time when fatigue among civil servants is increasing due to the prolonged COVID-19 pandemic, oral conditions caused by stress should be identified and greater awareness should be created about oral health care.
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