JKAOH Journal of Korean Academy of Oral Health

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

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  • Original Article 2021-12-30

    Changes in the oral health and tooth brushing habits of upper grade primary school children according to the composition of the tooth brushing environment of the school

    Su-Kyung Jwa

    Abstract : Objectives: This study aimed to provide basic data on the establishment of tooth brushing classrooms in elementary schools in South Korea. The basic data was gathered by investigating the upper-grade children’s oral health and brushing habits according to the tooth brushing environment in their respective elementary schools. Methods: A researcher compared the changes in dental caries and oral hygiene status with the Repeated Measure ANOVA in 137 elementary school students from three elementary schools. Results: The results of oral hygiene status, the Gingivitis Index, the use of the tooth brushing facility, and the number of times students brushed their teeth each day were all compared for all three years of the study. Group A (classroom-type), with a classroom-style tooth brushing facility next to the cafeteria, showed more improvement than Groups B (new classroom-type) and C (corridortype). Conclusions: In order to make tooth brushing a habit, the tooth brushing facility should be constructed in the form of a classroom with good accessibility to the cafeteria. An active and practical form of education will need to be provided by the school teacher to help children form this habit.

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  • Original Article 2021-12-30

    Effect of commercial pomegranate drink on the tooth enamel surface

    Ka-Young Jung , Ji-Eun Kim , Choong-Ho Choi

    Abstract : Objectives: This study examines the pH and titratable acidity of pomegranate drinks sold in Korea to identify the risk of dental erosion, and to provide basic data for oral health when consuming such drinks. Methods: The experiment included 5 groups: As experimental drinks, Sunkist pomegranate (Group A), Beauty liked pomegranate (Group B), Pomegranate juice 100 (Group C) were selected, and Jeju Samdasoo and Coca-Cola were selected for negative and positive controls. The components of the experimental beverage were analyzed, and the degree of erosion was measured using the Vickers hardness number (VHN) and by scanning electron microscope images. Results: When comparing the surface microhardness before and 30 minutes after beverage immersion, there was a significant difference in the positive control group, Group A, Group B, and Group C (P0.05). The difference in surface microhardness (ΔVHN) was found in Group C (-117.33±17.41), Group A (-112.90±15.19), the positive control group (-103.80±13.23), Group B (-90.82±24.60), and the negative control group (-13.44±14.60), in that order. The positive control group, Group A, Group B, and Group C showed a significant difference from the negative control group (P

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  • Editorial 2021-09-30

  • Original Article 2021-09-30

    Influences of organizational commitment, positive psycological capital on job embeddedness of clinical dental hygienists

    Hee Hong Min

    Abstract : Objectives: This study aims to determine the degree of organizational commitment, positive psychological capital, and job embeddedness among clinical dental hygienists, as well as the factors that affect their job embeddedness. The goal then is to optimize the data to develop programs that will keep the hygienists from quitting their occupations. Methods: A self-reported questionnaire was filled out by 190 clinical dental hygienists from Feb 1 to April 30, 2021. Data were analyzed using SPSS 26.0. Results: Dental hygienists scored 3.30 points on job embeddedness. These factors accounted for 68.6% of the variance in dental clinic hygienists. The variables influencing job embeddedness were Position_dummy (general hygienist/senior hygienist) and organizational commitment. These factors had a variance of 68.6% among clinical dental hygienists. Conclusions: Job embeddedness of clinic dental hygienists is related to organizational commitment and positive psychological capital, and job embeddedness turned out to be the biggest effect factor. Therefore, developing programs and institutional support mechanisms for clinical dental hygienists is important to enhance their positive psychological capital and organizational commitment.

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  • Original Article 2021-09-30

    Structural model on factors influencing career withdrawal intention of dental hygienists

    Hyunjin Kim , Hyeongmi Kim , Hyunsook Bae

    Abstract : Objectives: This study aimed to identify the factors that influence career withdrawal intention among dental hygienists. Methods: The subjects of this study were 448 dental hygienists working at dental offices in Daegu, Busan, and Ulsan. The contents of the survey were job fitness, job autonomy, career plateau, job challenge, growth opportunity, career satisfaction, career commitment, and career withdrawal intention. The collected data were analyzed using statistical methods such as frequency analysis, independent sample t-test, one-way ANOVA, structural model analysis, and bootstrapping using SPSS 18.0 and AMOS 21.0. Results: The groups with low career withdrawal intention were those who were over 30 years old, married, had a master’s degree or higher, and had more than 8 years of clinical experience. The group with low career withdrawal intention generally showed high job autonomy. It was found that job autonomy, growth opportunity, and career plateau indirectly affected career withdrawal intention by mediating career satisfaction and career commitment. The higher the job autonomy and growth opportunity, the lower the career withdrawal intention, and the higher the career plateau, the higher the career withdrawal intention. The factor that had a direct effect on career withdrawal intention was career commitment; the higher the career commitment, the lower the career withdrawal intention. Conclusions: To reduce dental hygienists’ career withdrawal intention, we propose expanding their job autonomy within the legal scope, developing a career development model, and finding ways to improve their career commitment.

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  • Original Article 2021-09-30

    Oral health literacy and related socioeconomic factors in mothers

    Hyun-Jeong Ju , Hyo-Won Oh , Heung-Soo Lee

    Abstract : Objectives: This study aimed to examine oral health literacy (OHL) in mothers and the factors that influence it. Methods: A total of 431 mothers of preschool children were chosen as study participants using the convenience sampling method. A self-administered questionnaire was used in this study. The survey contents included the socioeconomic characteristics of the participants as well as their level of oral health literacy. Results: In total, 44.8 percent of the participants had a low level of verbal oral health literacy (0-6 grade), and 16.9 percent had a low functional oral health literacy (≤6). Educational level and family income were significantly associated with the participants’ oral health literacy (Pearson correlation). Verbal oral health literacy of the participants was related to their family’s income, whereas their functional oral health literacy was related to their educational level. Conclusions: Many of the participants had a low level of oral health literacy. For mothers, to improve their oral health literacy, an oral health literacy program must be in place. Oral health literacy programs should be targeted toward mothers with low socioeconomic status.

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  • Original Article 2021-09-30

    A multi-level analysis of factors affecting the unmet needs of dental care service: focusing on comparison by age group

    Woo Jong Kim , Yong Jeon Shin

    Abstract : Objectives: The high co-payment of dental care service providers reduces access to dental care and exacerbates health inequality among different social classes. Dental care services are affected by several socioeconomic factors including those related to the household, regional factors surrounding individuals, and individual factors. In this study, we identified household and regional factors that affect unmet dental care needs, after appropriately adjusting for individual-level and provided suggestions for improving the future coverage of dental and oral health care services. Methods: Using the 2019 Korean Community Health Survey data, 101,718 middle-aged (40-64 years old) and 72,807 elderly (65 years and older) individuals were analyzed to identify the unmet needs of dental care services by age group. To identify factors affecting unmet dental care needs by age group, a multilevel analysis of the overall rate (T1) was conducted with three dependent variables: (a)availability, (b)economic accessibility, and (c) acceptability. Results: The unmet need for dental care service rate (T1) was 15.43% for middle-aged individuals, 14.73% overall, and 13.00% for the elderly. The results of the multi-level analysis indicated that at the household level, the number of household members aged 19 years and above had an effect on the overall (T1) total unmet needs of dental care services and economic accessibility for the middleaged group. At the regional level, economic accessibility influenced the degree of financial independence and the number of dental hospitals and clinics per population. Conclusions: In order to reduce the unmet needs of dental care services, it is necessary to comprehensively consider not only individual-level factors but also household-level factors and regionallevel factors according to age.

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  • Original Article 2021-12-30

    Oral disease prevention effect of ginkgo-leaf-extract-containing-dentifrice

    Byung-Hoon Kim , Kyong-Hoon Shin , Ja-Won Cho , Ji-Hyeon Park

    Abstract : Objectives: The study evaluated the effects of dentifrice with the proper amount of ginkgo biloba extract in the prevention of gum disease through clinical trials. Methods: Total sixty volunteers from the experimental group using experimental dentifrice (30 volunteers) and the control group using control dentifrice (30 volunteers) should use the experimental and control dentifrice for 8 weeks. Before the experiment, and 1, 2, 4, 6, and 8 weeks after the experiment, the papillary marginal attached gingival Index (the PMA index), Talbott’s gingival index, patient hygiene performance index (PHP index), and Tureski’s dental plaque index test were tested six times. Results: As a result of the PMA index measurement, the experimental and control groups showed statistically significant differences after 6 weeks, and the experimental group showed a significant decrease in the PMA index from 4 weeks after the experiment. The patient hygiene performance index measurement results showed a statistically significant difference between the experimental group and the control group after 4 weeks, and the experimental group showed a significant decrease in the PHP index 2 weeks after the experiment. Conclusions: The use of ginkgo-leaf-extract-containing-dentifrice confirmed that improved dental plaque removal, gingivitis relief, and periodontal disease prevention could be expected.

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  • Original Article 2021-12-30

    Antibacterial activity of phytoncide on oral biofilm

    Min-Jeong Kim , Myung-Gu Lee , Joon-Haeng Lee , Yeol-Mae Jeon , Hyun-Jun Yoo

    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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  • Original Article 2021-09-30

    3D motion analysis of cervical spine joints of dental hygiene students and dental hygienists during scaling operation

    Ka-Yeon Lee , Ji-Hee Kim

    Abstract : Objectives: This study aimed to objectively evaluate factors associated with musculoskeletal disorders by measuring the range of motion of the cervical spine. Using three-dimensional motion analysis, the degree of flexion, lateral flexion and rotation were compared between dental hygiene students and dental hygienists during dental scaling. Methods: Muscle activity in the range of motion of the cervical vertebrae was measured in 35 dental hygiene students and 15 dental hygienists while scaling. Data were collected and processed using the biofeedback exercise function of the 2EM (4D-MT, Relive, Gimhae, Korea), an electromyography measuring device. A three-dimensional motion analysis sensor was attached to the subject’s right external auditory canal, and the joint angle was measured at 20 Hz. Results: Cervical flexion (15°-45°) was measured higher in dental hygienists than in students. Cervical flexion within 15° of the normal range was higher in students than in dental hygienists. For cervical lateral flexion of 15°-45° and >45°, dental hygienists measured higher than students. In contrast, cervical lateral flexion within 15° of the normal range was higher among students than dental hygienists. Cervical rotation (15°-45°) was measured higher in dental hygienists than in students. No dental hygienist’s cervical rotation measured over 45°, and more students reached the 45° measurement than dental hygienists. Conclusions: Flexion, lateral flexion, and rotation were measured higher in dental hygienists then dental hygiene students. The results indicated that the range of motion of the cervical spine in the two groups exceeded the average scores for normal flexion, lateral flexion, and rotation by more than 15°, thereby increasing the risk of musculoskeletal disorders.

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June, 2022
Vol.46 No.2

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