JKAOH Journal of Korean Academy of Oral Health

ISSN(Print) 1225-388X ISSN(Online) 2093-7784

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  • Editorial 2022-03-30

  • Corrigendum 2021-12-30

  • Original Article 2022-06-30

    Reduction in malodor, gingival index and plaque index after 4-week use of new concept oral irrigator

    Hee-Ju Kim , Jong-Bin Kim

    Abstract : Objectives: This study aimed to evaluate the changes in clinical indexes related to periodontitis, such as malodor, gingival and plaque indexes, during the adjuvant use of a high pressure oral irrigator (COMORAL®, SMDsolutions, Seoul, Korea) in volunteers.Methods: We recruited 17 volunteers from an advertisement posted on Dankook University’s bulletin board. The oral malodor, gingival index, and plaque index of each volunteer were during the adjuvant use of a high pressure oral irrigator within a 4-week period.Results: Routine tooth brushing was done together with the adjuvant use of a new high pressure oral irrigator in the 4-week period. The oral malodor, gingival index, and plaque index measured after 2 and 4 weeks of use significantly decreased (P

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  • Original Article 2022-06-30

    Preventive effect of dentifrice containing 1,450 ppm fluoride and sodium pyrophosphate

    Min-Ji Park , Ja-Won Cho , Hyun-Jun Yoo , Mi-Hae Yun , Kyong-Hoon Shin , Young-Hoon Park

    Abstract : Objectives: This study aimed to evaluate the effects of a toothpaste containing sodium pyrophosphate and a high concentration (1,450 ppm) of fluoride on dental plaque, gingivitis index, and calculus index in a clinical trial.Methods: This study used an eight-week, randomized, double-blinded, controlled, comparative, parallel design. The participants, who voluntarily signed a consent form, were screened through visit evaluation if they met the selection/exclusion criteria. After a one-week run-in period, the selected participants were randomly assigned to either an experimental or control group in the order of their enrollment. Subsequently, the participants were asked to brush their teeth with the study toothpaste using the rolling method for 3 min, thrice daily, for 8 weeks. Oral examinations were performed at baseline and after 3 weeks, 4 weeks, and 8 weeks. Evaluation of papillary marginal attachment index (PMA index), Talbott’s gingival index, patient hygiene performance index (PHP index), Turesky plaque index, and calculus index were performed during the oral examination.Results: After 8 weeks, the PMA indices were 7.12 for the control group and 5.00 for experimental groups. In addition, the PHP index was 2.06 for the control group and 1.66 for the experimental group. Significant differences were observed between the control and experimental groups in all indice (P

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  • Original Article 2022-03-30

    An expert opinion study on policy tasks and approaches for the oral health care systems integrations in South-North Korea

    Seung-Hyun Lee , Se-Hwan Jung

    Abstract : Objectives: The aim of this study was to develop policy tasks and approaches for the integration of oral health care systems in South and North Korea on the basis of a literature research, and to verify their validity through a Delphi survey of an expert panel. Methods: Twelve policy tasks and 11 approaches for South-North Korea integration were developed by a comparative model of oral health care systems. Two rounds of Delphi surveys were conducted via e-mail on May 20 and June 16, 2020, targeting 10 experts with experience in inter-Korean oral health care exchange and cooperation or related research. The mean, coefficient of variation (CV), and content validity ration (CVR) were calculated for each item. The validity of each item was judged based on the CVR. Results: The five policy tasks that meet the consensus of experts are: the integration of dental college education, the integration of activity qualifications and supply/demand for general dentists, the integration of education and training for auxiliary dental personnel, the integration of activity qualifications and supply/demand for auxiliary dental personnel, and the integration of oral health care financing. The nine approaches of the consensus of experts are: sharing the philosophy, values, and strategies, guaranteeing geographic access for residents, standardized oral health care delivery, an integrated performance management system, an integrated computerized information system, an integrated governance structure, the installation and operation of an integrated organization, the re-education and re-qualification of active oral health care personnel, and integrated goals for oral health outcomes. Conclusions: The expert panel showed a relatively high degree of agreement with policy tasks and approaches for the integration of the South-North Korea oral health care systems. It is necessary to develop more realistic contents based on more reliable North Korean data in the future.

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  • Original Article 2022-06-30

    Analysis of inequality trends in dental caries, deep periodontal pockets, and severe tooth loss according to income level of adults using data from the Korea National Health and Nutrition Examination Survey

    Se-Hwan Jung

    Abstract : Objectives: The purpose of this study is to analyze the trend of inequality in dental caries, deep periodontal pockets, and severe tooth loss according to the income level of adults using data from the Korea National Health and Nutrition Examination Survey (KNHANES).Methods: The raw data from the 4th wave (2007-2009) to the 7th wave (2016-2018) were downloaded from the KNHANES website. The analytical subjects were 19 years of age or older who completed oral examinations and were classified differently according to the prevalence characteristics of each clinical indicator. The prevalence of permanent tooth caries (19 years +), deep periodontal pockets (30 years +), total tooth loss (50 years +), and 20 teeth and over (70 years +) were estimated according to the guidebook for data users. The absolute difference (AD) between the lowest and highest income levels and the prevalence ratio (PR) were calculated. All statistical analyses were performed with STATA version 13.Results: The prevalence of permanent tooth caries decreased by 6.7%, but the AD increased by 3.4% and the PR was statistically significant. The prevalence of deep periodontal pockets was 6-10%, but the AD increased by 1.7%, and the PR of 7th wave rapidly increased. The prevalence of total tooth loss decreased by 1.5%, but in the 7th wave, the AD and the PR rapidly increased. The prevalence of 20 teeth and over increased by 10.9%, but the AD increased by ―4.3%, and the PR was statistically significant in the first and second quantiles of all waves.Conclusions: In Korean adults, overall oral health status has improved over the past decade, but oral health inequality according to income level has generally worsened. Therefore, policy development including intervention in social determinants is needed to reduce the oral health inequality identified in this study.

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  • Original Article 2022-06-30

    The analysis of dental treatments among the disabled in a charity dental clinic, Cheongju city

    Jae-In Ryu , Hye-Ri Jeong

    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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  • Original Article 2022-09-30

    The frequency of tooth extraction before and after coverage of dental implants by National Health Insurance

    Jin-Sun Choi , 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.

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  • Editorial 2022-06-30

  • Original Article 2022-06-30

    Lysozyme hydrochloride 0.01%, sodium fluoride 0.02%, cetylpyridinium chloride 0.05% antibacterial and sterilizing effect of mouth freshener

    Hye-Won Park , Ja-Won Cho , Hyun-Jun Yoo , Yeol-Mae Jeon , Kyong-Hoon Shin , Seong-Min Ha

    Abstract : Objectives: This study aimed to assess the antibacterial, bactericidal, and mouth freshener effects of lysozyme hydrochloride 0.01%, sodium fluoride 0.02%, and cetylpyridinium chloride 0.05%.Methods: Eight oral disease-related bacteria were cultivated anaerobically. Four samples were prepared with or without 0.5% cetylpyridinium chloride, 0.2% sodium fluoride, and 0.1% lysozyme hydrochloride. Antimicrobial activity was tested in 96-well microplates. After assessing the bacterial count, the bacterial suspension was mixed with samples and spread on agar. The bactericidal rate was calculated by counting and comparing treated and untreated colonies.Results: Lysozyme hydrochloride 0.01%, sodium fluoride 0.02%, and cetylpyridinium chloride 0.05% mouth fresheners sterilized 99.99% of 8 oral bacteria, including Streprococcus mutans. Lysozyme hydrochloride 0.01%, sodium fluoride 0.02%, and cetylpyridinium chloride 0.05% mouth fresheners showed 99.97% bactericidal activity against Lactobacillus acidophilus.Conclusions: Lysozyme hydrochloride 0.01%, sodium fluoride 0.02%, and cetylpyridinium chloride 0.05% mouth fresheners confirmed the sterilization and antibacterial effects on oral disease-causing bacteria.

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September, 2022
Vol.46 No.3

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JKAOH Journal of Korean Academy of Oral Health
ISSN(Print) 1225-388X ISSN(Online) 2093-7784