ISSN(Print) 1225-388X
ISSN(Online) 2093-7784
ABOUT THE JKAOH
ARTICLE CATEGORY
ALL ARTICLES
FOR CONTRIBUTORS
-
E-Submission
All Articles
Most Read
, Deok-Young Park Abstract : Objectives: This study aims to determine whether National Health Insurance dental implant coverage increased instances of tooth extraction in older adults.Methods: Three periods were identified to analyze dental implant uptake in older adults-pre-coverage, intermediate-coverage, and post-coverage. Data for analysis were obtained from two sources. Frequency of tooth extraction and dental treatment data were obtained from the Healthcare Bigdata Hub. Data on the dental health status of older adults were obtained from National Health and Nutrition Examination Survey.Results: In 2019, the National Health Insurance supplied 10.2 dental implants per 100 older adults in Korea. The frequency of tooth extractions increased slightly after dental implant coverage for older adults, but statistically, the number of missing teeth was significantly reduced. Dental caries indices in older adults were also exacerbated during this period. The DMF rate and DMFT index for older adults increased significantly. However, the illness rate due to dental caries was also reduced. There was no significant difference in the prevalence of periodontal diseases. Based on the National health data and the frequency of related services, the slight increase in tooth extractions may be due to increased utilization of dental services.Conclusions: The authors could not find clear evidence that dental implant coverage increased the frequency of tooth extraction in older adults.
, Youn-Hee Choi , Keun-Bae Song Abstract : Objectives: International students attending Korean universities are sometimes not able to receive timely dental treatment, despite the need for dental treatment owing to various oral health problems. The purpose of the study was to identify various barriers to the regular use of dental services by international students in a metropolitan area of Korea.Methods: Questionnaires, both online and offline, were sent to 500 foreign university students enrolled in five selected universities located in Daegu city and nearby areas, with a total of 19 valid responses received. The questionnaire consisted of 41 items, including demographic characteristics, oral hygiene-related behavior, barriers to dental services access, and Oral Health Impact Profile (OHIP-14). The internal validity of each factor was 0.8 or higher (Cronbach Alpha α=0.86), confirming the reliability. All data were analyzed using IBM SPSS for Windows ver. 25.0 was used for analysis, and the statistical significance level was set to 0.05%.Results: Among the international student participants, 69.5% did not visit the dentist during their stay in Korea, and those with low prevalence of gum bleeding and plaque were more likely to visit the dentist regularly. Financial problems and lack of knowledge and interest in oral health were significantly associated with the use of dental services. The revised model’s explanatory power was 20.3%.Conclusions: In order to improve the oral and general health of international students residing in Korea, university level oral health education programs, oral health care centers, and governmental support programs should be implemented.
, Dong-Heon Baek Abstract : Objectives: The aim of this study is to investigate antimicrobial activity in isolated Streptococcus salivarius against Gram-positive bacteria related oral diseases.Methods: S. salivarius was used in G2, G7, K12, and ATCC 7073 strains and tryptic soy broth supplemented with glucose was cultivated. Actinomyces israelii, Actinomyces viscosus, and Enterococcus faecalis were cultivated with brain heart infusion broth. Streptococcus mutans and Streptococcus sobrinus were maintained using tryptic soy broth. The antimicrobial activity of S. salivarius was performed by minimum inhibitory concentration using the spent culture medium.Results: All S. salivarius have antimicrobial activity against Gram-positive bacteria in oral cavity. When comparing antimicrobial activity, S. salivarius G2 and G7 as isolated strain showed stronger antimicrobial activity against Gram-positive microbe than type K12 strain.Conclusions: S. salivarius G2 and G7 have strong antimicrobial activity and may be prevent oral disease by Gram-positive bacteria in oral cavity.
Abstract : Objectives: The purpose of this study was to analyze the inequality trends in self-rated poor oral health, chewing discomfort, and speaking discomfort of adults according to the household income level using data from the Korea National Health and Nutrition Examination Survey (KNHANES).Methods: Data from 2007-2020 were downloaded from the KNHANES website and were integrated by year within each wave. The participants were 19 years old or over who responded to the oral health items of the questionnaire survey. Prevalence of self-rated poor oral health, chewing discomfort, and speaking discomfort were estimated according to the guidebook for data users. The age standardized rates were computed using the 2005 standard population. Absolute difference (AD) between the lowest and highest household income levels and the prevalence ratio (PR) as relative ratio were calculated.Results: The prevalence of self-rated poor oral health decreased by 14.0%, but the AD increased by 3.0%, and the PR was enlarged in the lower household income level group. The prevalence of chewing discomfort and speaking discomfort decreased by 12.5% and 4.8%, respectively, but the AD of the two indicators persisted, and the PR was enlarged in the lower household income level group.Conclusions: Self-rated oral health and oral health-related quality of life have improved overall over the past decade in Korean adults, but the severity remains, and the problem of equity has persisted or aggravated. Therefore, it is necessary to find an upstream approach to resolve the inequality in oral health in Korea.
, Yong Jeon Shin Abstract : Objectives: Korea’s National Health Insurance (NHI) coverage rate for dental services is 16.0%, far lower than the 33.0% average of OECD (Organization for Economic Co-operation and development) countries. In 2013, the government implemented a policy to pay for dental scaling service for adults over the age of 20. Then in 2017, the eligibility criteria was expanded to adults aged 19 or older the eligibility age was lowered expanded to 19 or older.Methods: The study aimed to determine the effectiveness of the policy by comparing the number of times per person the dental scaling service was used before and after the implementation of the new applicants group compared to the existing application/applicants group. The analysis was conducted among patients aged 19 and 20 who visited the hospital with gingivitis and periodontal disease and who used the dental scaling service more than once per year as a preventive measure, using the customized database of the NHIC (National Health Insurance Corporation). As of July 1, 2017 when the dental scaling service was implemented by the National Health Insurance Service, the period was set as “before enforcement” (January 2016 to June 2017) and “after enforcement” (July 2017 to December 2018). To evaluate the policy effectiveness of expandingthe ages of individuals eligible for the dental scaling service, Difference-in-Differences (DiD) analysis was conducted to examine the number of times per person the service was used, changes in personal contributions, and policy effectiveness.Results: Since the National Health Insurance policy to pay for dental scaling services, both the applicants group and the sustainable application group have increased the rate of inspection of preventive dental scaling services (19.82%→30.91%, 29.68%→31.18%). As a result of determining the pure effect of the NHI’s policy of covering the dental scaling service, it was found that the the number of times the dental scaling service was used per person increased significantly in the new application group (0.03 times,
, Mi-Hae Yun Abstract : Objectives: This study aimed to determine if a 5-day lifestyle diary could be used to survey the frequency of consumption of cariogenic foods, as well as clean foods that reduce the formation of bacterial film on the tooth surface, and reveal the association between dietary intake factors and dental caries.Methods: 60 participants of the Healing School located in Jinan, Jeollabuk-do were asked to record a 5-day diet diary (4 days on weekdays and 1 day on weekends), and 53 participants (average age 42.6±1.16 years) were selected without exclusions. The results were cross-analyzed using frequency analysis (P =0.05).Results: The frequency of cariogenic food consumption showed a significant positive correlation with the frequency of clean food consumption (P
, Ja-Won Cho , Hyun-Jun Yoo , Jae-Seung Yea Abstract : Objectives: This study aimed to evaluate the antibacterial activity of green tea extract containing dentifrice on oral disease-causing bacteria.Methods: The antibacterial activity of green tea extract containing dentifrice was examined on the gram-positive bacteria Actinomyces israelii, Enterococcus faecalis, Filifactor alocis, Streptococcus mutans, and gram-negative bacteria Fusobacterium nucleatum, Porphyromonas gingivalis . A. israelii, E. faecalis, F. alocis, S. mutans, F. nucleatum, and P. gingivalis were cultured with green tea extract containing dentifrice or control dentifrice; 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 number of bacteria. Statistical significance tests were conducted using the Mann-Whitney test and SPSS 24.0.Results: Green tea containing dentifrice has antibacterial activity against A. israelii, E. faecalis, F. alocis, S. mutans, F. nucleatum, and P. gingivalis. Furthermore, green tea containing dentifrice killed more than 99.99% of 4 strains of gram-positive bacteria and 2 strains of gram-negative bacteria.Conclusions: The detergent with green tea extract is significantly reduced the bacteria applied in this experiment; dentifrice has a bactericidal and antibacterial effect against oral bacteria. Therefore, the detergent with green tea extract is thought to be helpful in preventing dental caries and periodontal disease.
Abstract : Objectives: This study aimed to analyze the trends of the gap in toothbrushing and dental care according to the household income level of all people using the Korea National Health and Nutrition Examination Survey (the KNHANES) data.Methods: Data from 2007-2020 were downloaded from the KNHANES website. Data integration and analysis were conducted for each wave. The prevalence of toothbrushing less than twice a day, toothbrushing after lunch, unmet dental care needs, regular dental check-ups, and preventive dental services use were each estimated based on the data users’ guidebook. The absolute difference (AD) between the lowest and highest income level and the prevalence ratio (PR) were calculated.Results: The prevalence of toothbrushing less than twice a day and toothbrushing after lunch improved by 5.3% and 13.6%, respectively. However, AD decreased by 4.5% and 2.4%, respectively. The step-wise social gradient in the PR of these indicators was maintained. The prevalence of unmet dental care needs improved substantially from 38.7% in Wave 4 to 21.0% in Wave 7. However, AD and PR were the poorest in Wave 7. The prevalence of regular dental check-ups and preventive dental service use improved steadily by Wave 8 to 45.0% and 37.0%, respectively. However, AD in Wave 8 was ―16.8% for the prevalence of regular dental check-ups and ―12.2% for preventive dental service use. The social gradient in the PR was maintained.Conclusions: While toothbrushing and dental care use have improved over the past decade, disparity by income level has not been noticeably reduced. This study’s results also reflected the achievements and limitations of the Korean government’s policies and projects for toothbrushing and dental hygiene habits.
, Yuri Song , Hyun Ah Lee , Hee Sam Na , Jin Chung Abstract : Objectives: Oral streptococci play a significant role in the development of dental caries. Among them, Streptococcus mutans and Streptococcus sobrinus are the principal causative agents of dental caries. Rheum palmatum is a flowering plant of the family Polygonaceae with several known medicinal properties. However, its effects on oral streptococci have yet to be established. Therefore, we investigated the effects of Rheum palmatum for its potential use as an anticaries agent in inhibiting the growth of streptococci and preventing biofilm formation.Methods: Rheum palmatum extract was diluted with sterile distilled water to obtain various extract concentrations. Several strains of oral bacteria, including S. mutans and S. sobrinus , were treated with the varying concentrations. The effects of the extract on bacterial growth was examined using the viable cell count method. Glucan synthesis was measured using a spectrophotometer at 650 nm optical density. Crystal violet staining was also carried out to observe the effect of the extract on biofilm formation.Results: The growth of S. mutans and S. sobrinus was significantly inhibited by the Rheum palmatum solution at concentrations of 0.3% or more compared to the control group. The viable cell count results indicated that the number of bacterial colonies decreased 1.2-fold and 1.7-fold at concentrations of 1.25% and 2.5%, respectively, compared to the control group. Biofilm formation by S. mutans and S. sobrinus was suppressed more than 20-fold compared to the control group at extract concentrations of 1.25% or more.Conclusions: The extract inhibited the growth of caries-causing bacteria, namely S. mutans and S. sobrinus . Furthermore, the extract inhibited the synthesis of glucan and biofilm formation by S. mutans and S. sobrinus . Therefore, this study suggests that the extract is a potential candidate as a therapeutic agent for controlling dental caries.
, Choong-Ho Choi Abstract : Objectives: This study examines the relationship of dental hygienists’ professional self-concept, self-leadership, job stress, and fatigue with their clinical competence in order to identify factors that can improve clinical competence. This study is intended to provide basic information to develop educational programs for dental hygienist’s clinical competence.Methods: The self-administered questionnaire survey was conducted with 243 dental hygienists working at dental clinics in Gwangju and Jeonnam from August 14, 2017 to September 9, 2017. The data regarding the general characteristics, professional self-concept, self-leadership, job stress and fatigue, and clinical competence were collected, and analyzed through independent t-tests, one-way analysis of variance (ANOVA), Pearson’s correlation coefficient, and multiple regression analysis using the SPSS Windows ver. 22.0.Results: High professional self-concept (r=0.54) and self-leadership(r=0.48) were associated with high clinical competence. High self-leadership (r=0.53) was associated with high professional self-concept. High fatigue(r=―0.21) was associated with low professional self-concept(P
Jin-Sun Choi , Deok-Young Park
J Korean Acad Oral Health 2022; 46(3): 135-141
https://doi.org/10.11149/jkaoh.2022.46.3.135
Nzeyimana Clemence , Youn-Hee Choi , Keun-Bae Song
J Korean Acad Oral Health 2022; 46(3): 121-128
https://doi.org/10.11149/jkaoh.2022.46.3.121
Sung-Hoon Lee , Dong-Heon Baek
J Korean Acad Oral Health 2022; 46(4): 217-221
https://doi.org/10.11149/jkaoh.2022.46.4.217
Young-Soon Won, Choong-Ho Choi, Han-Na OH
Journal of Korean Academy of Oral Health 2014; 38(3): 176-183
https://doi.org/10.11149/jkaoh.2014.38.3.176
Dong-Hyeob Woo, Hae-Young You, Min-Ji Kim, Han-Na Kim, Jin-Bom Kim, Seung-Hwa Jeong
Journal of Korean Academy of Oral Health 2013; 37(2): 95-102
https://doi.org/10.11149/jkaoh.2013.37.2.95
Su-Bin Jeong, Eun-Mi Choi, Jun-Seon Choi
Journal of Korean Academy of Oral Health 2014; 38(1): 50-58
https://doi.org/10.11149/jkaoh.2014.38.1.50
© 2024. Journal of Korean Academy of Oral Health. Powered by INFOrang Co., Ltd
