JKAOH Journal of Korean Academy of Oral Health

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

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    December, 2023 | Volume 47, No. 4
  • Editorial 2023-12-30

  • Original Article 2023-12-30

    A quantitative comparison of oral microbiota using various sample collection methods: a pilot study

    Sang-Uk Im , Ji-Hye Kim , Keun-Bae Song , Youn-Hee Choi

    Abstract : Objectives: This study aimed to compare each strain’s number of microorganisms found in oral samples collected using various collection methods. Methods: Twenty-two adults aged 40 and above participated in the study. Oral samples were collected from subjects using three different methods (stimulated saliva, oral biofilm, and calculus), and the collected samples were analyzed using the multiplex real-time Polymerase chain reaction (PCR) method. Results: The study included 22 subjects (2 men, 20 women) with an age range of 40-75 years. Healthy oral condition was observed in 10 subjects, while the remaining 12 had periodontitis. The saliva and biofilm collection methods for oral microorganisms detected Porphyromonas gingivalis (Pg), Tannerella forsynthesis (Tf), and Fusobacterium nucleatum (Fn), which are the causative bacteria of periodontal disease, more effectively compared with the calculus group. In addition, the saliva group showed a better ability to detect Streptococcus mutans (Sm) which causes dental caries, compared with the biofilm and calculus groups. Comparisons based on the presence or absence of periodontitis and the collection method revealed a statistically significant difference in the number of oral microorganisms only in case of Sm strain. Conclusions: The frequency of expression of certain strains varies according to the method of collection of oral microorganisms. Further, the saliva and biofilm methods of collecting oral microorganisms are more suitable for quantitative analysis of bacteria causing periodontal disease.

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  • Original Article 2023-12-30

    Evaluation of toothpaste abrasivity using acrylic and spectrophotometry

    Seung-Hwa Jeong , Min-Ji Byon , Eun-Joo Jun

    Abstract : Objectives: This study aimed to develop a method for objectively evaluating toothpaste abrasivity, enabling a direct comparison between different toothpastes. Methods: Nine commercially available toothpaste variants were selected, and 8 mm thick acrylic specimens were allocated to each toothpaste treatment group (n=7). A control group without toothpaste was also included. Specimens and toothbrushes were mounted on the V8 Cross brushing machine, and toothpaste (0.05-0.1 g) was applied for 20 strokes under a 200 g load and 1 Hz speed. The surface wear was measured at an absorbance of 600 nm in a UV-Vis spectrophotometer. Specimens were then photographed with a polarized light microscope, and the gray value of the worn brushed part was obtained through image analysis using Image J software. A one-way ANOVA followed by Bonferroni’s post-hoc test was employed for analyzing absorbance and gray value differences among the toothpaste groups. The correlation between absorbance and gray value was assessed using Pearson’s correlation analysis. Results: Significant differences were noted in absorbance and gray values across the toothpaste groups (P

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  • Original Article 2023-12-30

    The effect of Greek yogurt on the surface of bovine tooth enamel

    Ji-Eun Kim , Na-Yeong Kim , Choong-Ho Choi , Ki-Ho Chung

    Abstract : Objectives: This study aim to evaluate the effect of Greek yogurt on the tooth surface by comparing it with liquid fermented milk. Methods: After purchasing Greek yogurt available on the domestic market and measuring pH and titratable acidity, Greek yogurt was selected as the Greek yogurt group, Jeju Samdasoo as the mineral water group, and liquid fermented milk as the liquid fermented milk group. The specimens were treated with the experimental drinks for 30 minutes. Afterwards, the change in surface microhardness of the tooth surface was measured and the surface change was observed. Results: The pH of the experimental beverage was slightly higher in the Greek yogurt group than the liquid fermented milk group. In the effect of Greek yogurt on tooth surface hardness, there was a statistically significant difference in surface microhardness before and after immersion in the liquid fermented milk group, but there was no significant difference between the mineral water group and the Greek yogurt group. When comparing the surface microhardness change values among groups, the difference in surface microhardness (△VHN) between before and after 30 minutes of immersion showed a statistically significant difference between the liquid fermented milk group and the mineral water group and the Greek yogurt group, but there was no significant difference between the mineral water group and the Greek yogurt group. As a result of scanning electron microscopy, the surfaces of the mineral water and Greek yogurt groups were smooth without damage, but the surfaces of the liquid fermented milk group were rough and uneven. Conclusions: Considering the results of this experiment, it is considered that Greek yogurt has a lower risk of causing dental erosion compared to liquid fermented milk, and these characteristics of Greek yogurt can be considered when providing dietary counseling regarding fermented milk products.

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  • Original Article 2023-12-30

    Research on dental service utilization and untreated conditions among Koreans aged 65 and above

    Ji Eon Jang , Sung Hee Jun , Sun Rak Jeong

    Abstract : Objectives: This study used data from the seventh National Health and Nutrition Survey, a dataset which signifies that dental services in the country exhibit relatively low health insurance coverage and high copay rates compared to other medical healthcare services. We surveyed the utilization rate of dental care and the prevalence of untreated conditions among Korean elders aged over 65. Furthermore, we aimed to present policy implications to improve dental care accessibility and expand health insurance coverage for elders, especially vulnerable individuals who are bedridden or living alone. Methods: We used raw data from the seventh National Health and Nutrition Survey to investigate Korean elders’ dental service utilization and untreated conditions. We opted for elders aged over 65 and finalized 1,712 subjects for the analysis. Statistical analysis was performed using IBM SPSS 25.0 (IBM Corp., Chicago, IL, USA). Groups were detailed in terms of strata of variation estimation and elders aged over 65, cluster of district enumeration, and weighted oral survey. We generated a scheme file and employed complex sampling analysis with a statistical significance level of P

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  • Original Article 2023-12-30

    Unmet dental care needs and related factors among pregnant women: analysis based on data from 2019 Korean Community Health Survey

    Ah-Young Sun , Hee-Jung Park , Jun-Hyup Lee

    Abstract : Objectives: This study aims to identify the factors affecting unmet dental care needs in pregnant women in Korea, and analyze the results. Methods: The study used original data from the 2019 Community Health Survey. A total of 1,146 women who were pregnant at the time were selected as the final subjects for analysis. Complex sample logistic regression analysis was conducted to understand the factors contributing to unmet dental care needs. Results: Among the subjects, 16.3% reported experiencing unmet dental care needs. The main reasons were a lack of time, other reason (pregnancy, bother to go) and minor symptoms. This study found that age and marital status as predisposing factors, number of household members as enabling factors, and subjective oral health status, chewing difficulties, tooth brushing frequency, and subjective stress levels as need factors significantly impacted the experience of unmet dental care needs. Conclusions: Customized oral health education for pregnant women is crucial to raise awareness about its significance. Considering that pregnant women may be single-person households or face challenges in visiting the dentist alone, it is necessary to establish a medical delivery system that facilitates access to medical treatment. Furthermore, policy efforts should be directed toward reducing unmet dental care needs among pregnant women.

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  • Original Article 2023-12-30

    Awareness of the concept and role of public oral health care in Korea among oral health professionals

    Yong-Jin Lee , Na-Rae Lee , Yun-Sook Jung , Min Lee , Hoi-In Jung , Youn-Hee Choi

    Abstract : Objectives: The importance of public healthcare has been further emphasized by the arrival of the era of super-aged societies. This study investigates the landscape among oral health professionals, focusing on the concept development of the public oral health care (POHC) and essential oral health care (EOHC). Methods: A questionnaire survey of oral health professionals was conducted at six associations or societies who have an interest in POHC from December 21 to December 29, 2022. Chi-squared and logistic regression analyses were adopted to identify significant differences between the responses according to general characteristics. Significant differences were considered at a P-value of 0.05. Results: A total of 100 oral health professionals (48 dentists and 52 dental hygienists) participated in this study. The results revealed that there is a need for improvement of the POHC and the establishment of concepts related to the POHC and EOHC. The agreement rate was 90%, 85%, and 86% for the responsible organization, the target object and field, and the concept in the definition of the POHC, respectively. In the case of the construction of the EOHC, the agreement rate was 91% for “Quality of life,” and 85% for “Life and safety.” Among the community oral health programs as the POHC programs, “Oral health education program” showed the highest agreement rate. In healthcare institutions that are capable of providing the POHC services, “Oral health center in the public health center” had the highest agreement rate. Conclusions: The POHC would be reasonable to define to ensure universal access to oral healthcare services for all citizens. In the case of EOHC, further research is needed to establish terminology and specific concepts in the future. This study could contribute valuable insights to the field of the POHC in an era of super-aged societies. As further research, more oral health professionals need to participate in the POHC-related policy and health care system.

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  • Original Article 2023-12-30

    A case report of brain activity during mastication

    Ji-Hye Kim , Hansol Lee , So-Yeun Kim , Sung Ho Jang , Yongmin Chang , Youn-Hee Choi

    Abstract : Objectives: The aim of this study was to evaluate brain activity in youth during chewing gum and wood stick using functional magnetic resonance imaging (fMRI). Methods: Two participants chewed wax gums and wood stick on the rhythm of 1 Hz during MRI scanning. The task paradigm was a block design and each chewing-rest procedure was repeated five times for 30s. Results: The brain regions activated during chewing gum and wood stick were the precentral gyrus, postcentral gyrus, supplementary motor area, thalamus cerebellum. The medial prefrontal cortex (mPFC), anterior cingulate cortex (ACC), hippocampus, and precuneus were additionally activated by mastication of the wood stick. Brain activation induced by chewing wood stick was higher than chewing gum. Conclusions: Our results suggest that mastication contribute to cognitive improvement through brain activity, this effect is stronger during chewing wood than gum. Therefore, eating harder foods may improve cognitive function more effectively.

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  • Original Article 2023-12-30

    Association between chronic kidney disease and tooth loss in elderly Koreans: The Korea National Health and Nutrition Examination Survey 2016-2018

    Na-Yeong Kim , Ji-Eun Kim , Choong-Ho Choi , Ki-Ho Chung

    Abstract : Objectives: This study was aimed to investigate the association between chronic kidney disease and tooth loss in elderly Koreans. Methods: Data of 2,419 elderly people aged 65 years or older who participated in the 7th Korea National Health and Nutrition Examination Survey (2016-2018) were obtained. Those with no missing values were analyzed. Complex samples multiple logistic regression analysis was performed to determine the effect of chronic kidney disease on tooth loss. Results: After adjusting for all covariates, chronic kidney disease was significantly associated with fewer than 20 present teeth (OR 1.53, 95% CI 1.01-2.30). Conclusions: In elderly Korean people, chronic kidney disease was significantly associated with having less than 20 teeth, suggesting that chronic kidney disease is a risk factor for tooth loss in the elderly.

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  • Original Article 2023-12-30

    Survey on the awareness of guardians and dental workers regarding the application of behavioral guidance techniques during dental treatment for pediatric patients

    seung-hui Choi , Cheon-Hee Lee

    Abstract : Objectives: The purpose is to establish positive relationships between pediatric patients, their guardians, and dental workers by investigating behavioral induction methods used in pediatric treatment and to encourage active cooperation during dental treatment of pediatric patients, leading to successful treatment. Methods: From March 2023 to September 2023, general hospitals, dental hospitals, and dental clinics were randomly selected and a survey was conducted on guardians of pediatric patients and dental workers, and a total of 154 copies were used in the final analysis. Results: The difference in perception of physical restraint as a behavioral induction method was that 49 people (65.3%) perceived that guardians could only allow physical methods that would not put them in dangerous situations, while dental workers could only accept physical methods that would not put them in dangerous situations. Only 41 people (51.9%) could allow it. Conclusions: In the clinic, a positive relationship must be maintained between dentists, patients, and guardians, and effective behavioral induction methods must be applied to maximize the efficiency of pediatric dental care.

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  • Original Article 2023-12-30

    Community-based visiting healthcare personnels’ capacity in elderly oral health care and the effectiveness of group oral health education: a pilot study

    Ji-A Park , Sol Han , Yoo-Young Lee , Bo-Hyoung Jin

    Abstract : Objectives: This study is an effectiveness evaluation study of an oral health education program conducted on 30 visiting nurses who participated in the “CHAT-DONG” project in a district of Seoul, Korea. The primary objective of this study is to obtain basic data for the development of an oral healthcare education program for visiting nurses. Methods: To evaluate the effectiveness of the educational program comprising lecture and small group practice training, oral health knowledge, beliefs, awareness, self-efficacy, and oral health status assessment capabilities were assessed before and after the training, using Google online surveys. Finally, data from 22 participants were used for analysis. Results: Overall oral health knowledge improved after the training, however, specific oral disease knowledge was low. There were no significant changes in oral health beliefs and awareness, but there was a significant increase in self-efficacy. The ability to assess oral health status improved a little, however, the ability to express specific oral health conditions was low. This may be owing to the limitations of a one-time training and the inexperience and unfamiliarity of the participants. The participating nurses were highly satisfied with the training program and expressed a strong desire for regular and ongoing training. Conclusions: This study highlights the necessity for systematic and sustained training programs for healthcare personnel, including visiting nurses, to provide effective oral healthcare to older adults. Furthermore, the development of such training programs should consider the demographic characteristics of the target population and their level of prior knowledge and experience when designing, implementing, and evaluating training programs.

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  • Case Report 2023-12-30

    Case study of a long-term care resident with oral health problem

    Sol Han , Ji-A Park , Yoo-Young Lee , Bo-Hyoung Jin

    Abstract : This study aimed to analyze the extent of oral health problems among elderly residents of long-term care facilities who have difficulties accessing care at dental clinics due to physical limitations and other challenges. Seventy-four elderly individuals residing in long-term care facilities in A-gu, Seoul, were screened. From these, we randomly selected three older adults (MMSE-K≥24) who were able to communicate freely in the study. Relevant information was obtained through document review, observational surveys, and one-on-one interviews to identify oral health problems and physical limitations experienced by these older adults. The elderly in long-term care facilities experienced pain and discomfort due to oral problems, and improperly fitting dentures and other prosthetics. These oral problems led to limitations in compromised oral functions and alterations in dietary patterns. Despite the need for customized oral care and treatment, the specific oral health needs of the elderly residents were not met due to barriers that hindered their access to healthcare facilities, such as restricted mobility. To alleviate oral functional limitations in elderly residents of long-term care facilities, interventions, such as necessary treatments and personalized oral care, should be implemented. Establishing a systematic approach, including timely visits to long-term care facilities by dentists and a referral system between facilities and dental services, is crucial to optimizing dental care for elderly individuals living in residential aged care.

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  • Brief Letter 2023-12-30

    Constructing a non-face-to-face oral health care service model using my data: proposal

    Seon-Jip Kim , Seung-Hee Ryu , Ji-Na Lim , Hye-Jin Kwon , Zi-Lan Wang , Jae-Young Lee , Hyun-Jae Cho

    Abstract : This study focuses on the importance of non-face-to-face healthcare, based on the experience with the COVID-19 pandemic, and proposes a model for oral health management services utilizing personal data, known as “my data.” The model aims to develop a comprehensive system that collects and integrates individual health records for easy access. It includes assessing oral health through oral examination records and surveys, creating risk assessment algorithms tailored to various population groups, and standardizing medical terms and data. The goal is to accurately evaluate individual oral health conditions and provide personalized services. However, the success of the model requires considerations such as platform management, user experience enhancement, and medical data security. The research proposes possibilities for further investigation to enhance the oral health service model. This study introduces a novel approach to individual health management, establishing the foundation of effective health management even in non-face-to-face settings.

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December 2023
Vol.47 No.4

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