The financial estimate of dental implant treatment about the National Health Insurance coverage for the Korean young adults / 대한구강보건학회지

Objectives@#The purpose of this study is to review the condition of young adults’ teeth loss and dental prostheses and obtain the financial estimate which was needed for National Health Insurance Coverage for Korean young adults’ dental implant treatment. @*Methods@#This study analyzed young adults between 20 years and 29 years old using the data from the 7th Korea National Health and Nutrition Examination Survey. The KNHANES data were used to generate indicators related to teeth loss and dental prostheses. In addition, this study estimated the financial data of dental implants for young adults by using the number of population covered by National Health Insurance, the number of dental implants insurance fee, and the number of dental teeth loss per person. @*Results@#Korean young adults have 20.4% of tooth loss holders and 2.1% of them require a tooth extraction. Also, dental implant holders were 2.3%. The estimated finance of dental implant treatment for the Korean young adults was confirmed from a minimum of 55.9 billion to a maximum of 233.0 billion. @*Conclusions@#In order to prevent early deterioration of oral health due to teeth loss held by young adults, attention is needed to the National health insurance coverage of implant for young adults.

Correlation between oral health behaviors and problematic experiences associated with smartphone use in adolescents / 대한구강보건학회지

OBJECTIVES: We investigated the correlation between oral health behaviors and problematic experiences associated with smartphone use in adolescents. METHODS: Raw data from the 13th National Health and Nutrition Examination Survey (KNHANES) were used. The data were analyzed using a composite sample-planning file. Statistical analysis was performed using PASW Statistics 21.0 (SPSS Inc., Chicago, IL, USA). Statistical significance was set at P<0.05. RESULTS: There was a negative correlation between family conflicts due to the use of smartphones and brushing teeth after lunch and twice a day. Additionally, there was a negative correlation between peer conflict experiences due to the use of smartphone and brushing teeth twice a day. Academic difficulties of adolescents due to the use of smartphone were negatively correlated with using supplementary oral hygiene devices and brushing teeth twice a day. CONCLUSIONS: Based on the above results, we confirmed that problematic experiences associated with the use of smartphone are correlated with oral health behaviors. Therefore, it is necessary to plan ways to reduce the excessive use of smart phones in adolescents. In addition, it is necessary to develop an efficient tooth-brushing management system that incorporates the use of smartphones or modern devices.

The effects of job characteristics and non-regular work on the toothbrushing habit and oral check-up in Korean worker: using data from the 7th Korea National Health and Nutrition Examination Survey (KAHANES, 2016) / 대한구강보건학회지

OBJECTIVES: The purpose of this study was to identify the effect of job characteristics and non-regular work on the toothbrushing habit and oral check-up in Korean worker.METHODS: This study was approved for the use of raw data from the 7th Korea National Health and Nutrition Examination Survey (KAHANES, 2016). The raw data was analyzed by complex sampling analysis using IBM SPSS Statistics 21.0 (Chicago, IL, USA). Statistical significance was determined as P < 0.05.RESULTS: The non-regular workers had lower rate of toothbrushing more than twice a day, toothbrushing after lunch, and oral check-up than regular workers. Compared to non-regular workers, the odds ratio of toothbrushing and oral check-up at regular workers increased by 1,464 and 1,717 times, respectively.CONCLUSIONS: It is necessary to find specific directions to expand the oral check-up program so that all workers, including non-regular workers and part-time workers.

Qualitative Research on Communication Education of Dental Hygienist by Focus Group Interview / 치위생과학회지

The purpose of this study to review clinicians and educators on required communication education factors of dental hygienists using qualitative research by focus group interview. The participants were dentists, dental hygienists and professors. A questionnaire was developed on communication education to collect data. The collated data derived concepts related to communication education. After transferring the data, were analyzed by open coding and axial coding using computer-aided qualitative data analysis software. Focus group emphasized that higher education on communication should be preceded before they are put into the clinical field. However, the dental hygienist emphasized experiential education in the clinical field, the professor emphasized additional education for continuity of communication education even after graduation. Besides, focus group emphasized role play, and the professor required that the standardization of the dental communication training courses objectives and role play modules and the education environment infrastructure should be established to implement communication education efficiently. The categories of communication education stated in the focus group were time and method for the dental communication training courses, dental communication training courses standardization and educational environment, of evaluation of communication competency, of perception of the dental communication training courses. This study identified the communication education development to conform with the needs of the clinical field strengthen and cultivate communication competency dental hygienists based on factors of communication education emphasized in focus groups.

In vitro antimicrobial activity of different mouthwashes available in Korea / 대한구강보건학회지

OBJECTIVES: The purpose of this study was to compare the oral antimicrobial effects of seven different mouthwashes available in Korea. METHODS: To examine the antimicrobial effects of the seven mouthwashes, their minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC) were determined using broth microdilution methods. Streptococcus mutans ATCC 25175, Lactobacillus acidophilus ATCC 4355, Candida albicans KCTC 7270, and Porphyromonas gingivalis ATCC 33277 were used in this experiment. S. mutans and P. gingivalis were examined using a scanning electron microscope (SEM), after treatment with the mouthwashes containing cetylpyridinium chloride (CPC). RESULTS: Mouthwashes containing CPC had lower MIC and MBC values against the four microorganisms. Their bactericidal effects were concentration-dependent. S. mutans and C. albicans were highly sensitive to the concentration of CPC in the mouthwashes. According to the SEM observation, the treatment of bacteria with mouthwashes containing CPC, changed the cell surface texture of S. mutans and P. gingivalis. CONCLUSIONS: Mouthwashes containing CPC showed relatively lower MIC and MBC values under the same conditions against the four microorganisms used in this study.

Oral health behaviors of Korean male workers and related factors / 대한구강보건학회지

OBJECTIVES: The purpose of this study was to evaluate the oral health behaviors of Korean male workers and analyze the variables affecting oral health behavior. METHODS: This study used data from the 2014 Korean National Health and Nutrition Examination Survey (KNHNES), from which 1,341 male workers who answered the questionnaires were selected. The data were analyzed by chi-squared test and logistic regression using PASW Statistics 18.0 (SPSS Inc., Chicago, IL, USA), and 95% confidence intervals were computed. Logistic regression analysis was used to assess the relationship between oral health behaviors and demographic characteristics. RESULTS: Oral health behaviors varied according to the male worker's job. Brushing teeth two or more times a day varied with levels of stress. The prevalence of people who use supplementary oral hygiene devices was 49.5%. It was increased in male workers with a spouse or high educational level (P<0.05). In addition, office workers were more likely than laborers (P<0.05) to use a supplementary oral hygiene device. The prevalence of people who brush their teeth before sleep was 41.8%. Young male workers (20-39 years old) were more likely to brush their teeth before sleep than senior workers (≥60 years old) (P<0.05). CONCLUSIONS: It is necessary to prepare a plan to promote an interest in dental hygiene in laborers and those who work in the agricultural and fishing industries. Oral health education, oral health programs, campaigns, oral check-up systems, and improvements in working environments are needed to improve the oral health behaviors of male workers.

Oral health literacy of mothers belonging to multi-cultural families in Gangneung City: a case study / 대한구강보건학회지

OBJECTIVES: The purpose of this study was to identify the oral health literacy level of mothers in multi-cultural families and promote their oral health. METHODS: Participants were 46 mothers belonging to multi-cultural families who participated in the Oral health promotion program for multi-cultural families in Gangneung. For measurement of oral health literacy, 30 subjects were analyzed. Six pre-trained investigators conducted an interview with the mothers. Thirty-six mothers belonging to general families in Gangneung were included, and 30 subjects were analyzed. The Oral Health Literacy Instrument for Korean Children's Caregiver was used. Data were analyzed using SPSS 20.0 (SPSS Inc., Chicago, IL, USA). RESULTS: The mean oral health literacy score for mothers from multi-cultural families was 10.83 out of 22.0, which was lower than the score for mothers from general families (P<0.05). The percentage of mothers from multi-cultural families whose oral health literacy was inadequate was 63.3%. Oral health literacy scores were significantly different by Korean fluency level (P<0.05). The correlation between Korean communication level and reading comprehension score was significant (P<0.01). The correlation between Korean communication level and total oral health literacy score was also significant (P<0.05). Finally, there was a significant correlation between oral health knowledge and reading comprehension (P<0.05). CONCLUSIONS: The oral health literacy score for mothers from multi-cultural families was lower than that for mother belonging to general families, and 63.3% had inadequate knowledge. Oral health professionals should use easy terms and consider the Korean communication capacity of mothers in their professional service.

Changes in the amount of pit and fissure sealants supplied in Korea after inclusion in the National Health Insurance coverage / 대한구강보건학회지

OBJECTIVES: The purposes of this study were to review changes in the amount of pit and fissure sealant (PFS) provided after the inclusion of PFS in treatments covered by the National Health Insurance (NHI) and to assess differences in the supplied amount between geographical areas where accessibility to dental care differs. METHODS: The years for comparison were selected based on data availability and the time of inclusion of PFS into NHI coverage. The selected pre-inclusion year was 2008, and the post-inclusion year was 2012. Data regarding the amount of PFS supplied were collected from the oral health program, NHI, and Medical care. To dichotomize areas by high and low dental care accessibility, we standardized the population size, number of dental institutions, and number of dentists in each group. RESULTS: We considered metropolitan areas and Gyeonggi Province as high dental care accessibility areas, while other provinces were considered as low dental care accessibility areas. Regardless of the transforming constant, the amount of PFS supplied increased in high dental care accessibility areas and decreased in low dental care accessibility areas after inclusion of PFS in NHI. CONCLUSIONS: To increase the amount of PFS provided in low dental care accessibility areas, promotion of PFS should be strengthened and support from oral health programs should be increased. Additionally, waiving out-of-pocket money for PFS in NHI should be considered to remove barriers of supply.

Education on National Health Insurance: experience of Korean dentists who secured a license during 2000-2004 / 대한구강보건학회지

OBJECTIVES: The purpose of this study was to investigate Korean dentists' perceived experience with and contents of education on National Health Insurance, and their competence in the practice of cases involving a health insurance claim. METHODS: A survey was conducted with 600 dentists who secured their dentist license during 2000-2004. A systemic stratified sampling, with "school graduated from" as a stratum, was conducted on a population of 3,947 dentists, using the register of the Korean Dental Association. A survey request and questionnaire sample was mailed, and responses were collected using a web-based replying method. The impact of the experience of education related to health insurance on the frequency of, and perceived competence on health insurance claims was analyzed using the chi-square test. RESULTS: Only 21% dentists replied that they had educational experiences related to health insurance when they were dental students, and the content of this education was 'health insurance system' (69%) and 'health insurance law' (59%). Only 28% of the respondents replied that they had practiced cases related to health insurance claims at dental schools. The rate of dentists who had educational experiences related to health insurance after their graduation was 73%. The experience of education related to health insurance and the perceived competency on handling health insurance claims showed a statistically significant correlation (P<0.01). CONCLUSIONS: It is necessary to develop a standardized curriculum related to health insurance and health insurance claims in dental schools.

Photodynamic bactericidal effect against Enterococcus faecalis by erythrosine concentration and LED irradiation times / 대한구강보건학회지

OBJECTIVES: The purpose of this study was to provide photodynamic bactericidal effect against Enterococcus faecalis by erythrosine concentrations and LED irradiation times. METHODS: Erythrosine was used as a photosensitizer and green LED (3 Watt, 520-530 nm) was used as light source. E. faecalis ATCC 1943 and E. faecalis ATCC 29212 were used in this study. Approximately 10(5) CFU of bacteria were added in wells of a 96-well microtitration plate. For examining the effects of concentrations of erythrosine, 0, 0.625, 1.25, 2.5, 5, and 10 microM of erythrosine were added in wells containing bacteria. The irradiation time with LED was 30 sec. In another set of experiment, the effect of irradiation time for killing of bacteria was investigated by increasing irradiation time from 0 to 30 s with 10 microM of erythrosine final concentration. After irradiation, each sample was serially diluted with PBS and 50 microl of diluents was spread on duplicate blood agar plates. The plates were incubated for 72 h at 37degrees C under aerobic conditions and the number of CFU was determined. The experiments were repeated four times. The results were analyzed using one-way ANOVA, and Tukey's multiple comparison at a significance level of 0.05. RESULTS: When the erythrosine concentrations were more than 2.5 microM, E. faecalis ATCC 29212 was significantly decreased (P<0.05). The more erythrosine concentrations increased, the more E. faecalis ATCC 1943 decreased statistically significantly (P<0.05). In another set of experiment, when LED irradiation time was more than 20 s, E. faecalis ATCC 1943 decreased significantly (P<0.05), and if the irradiation times was more than 5 s, E. faecalis ATCC 29212 decreased significantly (P<0.05). CONCLUSIONS: PDT using erythrosine and green LED was found to be an effective method in killing E. faecalis.

One-year outcomes and reasons for dropout in participants of the continuous dental care program of the Community Child Center in Gangnueng city / 대한구강보건학회지

OBJECTIVES: This study aimed to determine the effectiveness of the continuous dental care program of the Community Child Center in Gangneung city by evaluating one-year outcomes and determining the reasons for dropout. METHODS: A total of 180 children in the study group were provided with continuous dental care in 2008. The control group consisted of 131 children whose 2009 dental records from Gangneung-Wonju National University Dental Hospital were retrospectively reviewed. The outcome of dental caries prevention was evaluated by prevalence rates and number of decayed teeth. The evaluation of dental care outcome was based on cost and frequency of dental care. A chi-square test and Mann-Whitney U test were used to assess differences between the study group and the control group. In addition, the dropout rate and the reasons for dropout by the time of dental service supply were investigated for 427 children who participated in this program in 2010. RESULTS: Dental caries prevention results of the study group were better than those of the control group, but significant differences were found only in the dt rates of girls (P<0.001). The average frequency of dental care per child in the study group was lower than that of the control group. The average cost of dental care per child was 56,910 won per boy in the study group, 124,893 won per boy in the control group, 71,657 won per girl in the study group, and 127,296 won per girl in the control group. Significant differences in dental care results were found for both boys and girls (P<0.05). The reasons for dropout were leaving the center, absence, use of another dental clinic, parents' or child's rejection of the program, and disability. CONCLUSIONS: On the basis of these results, we could logically assume that promoting oral health and reducing the cost of dental care might be achieved through the introduction of a continuous dental care program for vulnerable children and adolescents in the community.

Clusters of oral health-related behaviors by gender and their relationship with psychosocial factors for adolescents in Gangneung / 대한구강보건학회지

OBJECTIVES: To verify the clusters of oral health-related behaviors by gender for adolescents in Gangneung, and to assess the influences of psychosocial factors (family socioeconomic status factors, individual economic factors, and psychological factors) on these clusters. METHODS: A survey was conducted of 3,611 adolescents (6th grade students in primary school, 2nd grade students in middle school, and 2nd grade students in high school) in Gangneung. The response rate was 96.6% (1,846 boys; 1,765 girls). The data were collected via self-administered structured questionnaires assessing participants 'smoking experience,' 'tooth brushing,' 'consumption of crackers or soft drinks,' and 'consumption of fruits or vegetables.' K-means cluster analysis was used to cluster the oral health-related behaviors by gender. A chi-square test was used to assess the difference between the clusters for oral health-related behaviors by gender and psychosocial factors. RESULTS: Clusters of oral health related-behaviors were classified into the unhealthy group (group 1; bad oral health-related behaviors), healthy group (group 2; good behaviors), and complex group (group 3; low smoking experiences and complex other behaviors). The clusters were different by gender. In the unhealthy group, boys represented 19.9% while, in the healthy group, girls represented 47.3%, which are both higher than the theoretical rates. Psychosocial factors in the unhealthy group were significantly lower than the healthy group (P<0.05). CONCLUSIONS: Meaningful clusters of oral health-related behaviors by gender were identified. Furthermore, the clusters were different by psychosocial factors. This finding suggests that one of the best ways to enhance oral health for adolescents is to develop oral health promotion programs for each oral health-related behavior cluster.

An analysis of the articles published in the Journal of Korean Academy of Oral Health, from 1995 to 2012 / 대한구강보건학회지

OBJECTIVES: This study proposes to trace the development of the Journal of Korean Academy of Oral Health by analyzing its articles. METHODS: All of the articles published in the Journal of Korean Academy of Oral Health from 1995 to 2012 were assessed and analyzed with regard to the following: research design, MeSH database keywords, and statistical method. RESULTS: The total number of published articles was 830. This journal has conducted based on the relatively weak research designs and statistical analysis, and keyword does not matched with MeSH terms. The most frequently used research design was cross-sectional (53.1%). The statistical methods most often used were the F-test, t-test and contingency table. Only 34.3% of keywords matched MeSH terms. CONCLUSIONS: It was confirmed that the activities of the field of Journal of Korean Academy of Oral Health have become more prevalent over the past 18 years. In order to develop the quality of the journal, more systematic, refined study designs and methods are needed. It is also urgently essential that authors understand MeSH terms, and the Journal of Korean Academy of Oral Health should request that authors use accurate MeSH terms as their keywords when they submit articles.

Back to the Basics! / 대한구강보건학회지

No abstract available.

Abrasion of resin infiltrated enamel by tooth brushing / 대한구강보건학회지

OBJECTIVES: The purpose of this study was to evaluate abrasion of Icon(R) infiltrated, sound bovine enamel by using confocal laser scanning microscopy (CLSM) after toothbrush abrasion tests. METHODS: Sound bovine enamel specimens whose Vickers Hardness Number ranged from 280 to 320 were prepared. To measure abrasion, specimens were allocated to groups on the basis of tooth brushing stroke frequencies. Tooth brushing stroke frequencies were categorized into 5 groups: 1,800, 5,400, 10,800, 21,600 and 43,200 strokes. Both infiltration depth of Icon(R) and the abrasion depth were measured by CLSM. RESULTS: Mean infiltration depth of Icon(R) for sound bovine enamel was 98.6 microm. There was no statistically significant difference in enamel abrasion depth between groups with 5,400 strokes and 10,800 strokes, but the abrasion depth increased with further increase in tooth brushing stroke frequencies (P<0.001). The mean abrasion depth of resin infiltrated bovine enamel after 43,200 tooth brushing strokes was 17.45 microm. CONCLUSIONS: The magnitude of abrasion after 43,200 tooth brushing strokes, which corresponds to brushing 3 times a day for 4 years, was less than 20 microm. This result suggests that abrasion by tooth brushing would not be a clinical problem for resin infiltrated enamel.

The remineralization effect of topical fluoride agents on artificial enamel caries / 대한구강보건학회지

OBJECTIVES: The aim of this study was to compare the remineralization effect of the topical fluoride agents on artificial enamel caries, under the chemical pH cycling model, using surface microhardness. METHODS: Bovine enamel specimens, embedded in acrylic resin with the labial surfaces exposed, were developed artificial enamel caries. Thereafter, this study used 56 samples on VHN 25-45. The experimental groups were divided into 4 groups: control, 2% NaF solution, 1.23% APF gel, 5% NaF varnish. Samples, except in the control group, were applied to each topical fluoride agent for 4 minutes. All groups were exposed to a pH cycling model, which consisted of demineralization (4 hours) and remineralization (20 hours) for 17 days. The Vickers surface microhardness number (VHN) was measured, using the microhardness tester. The results were analyzed, using a repeated measures analysis of variance of a general linear model, and compared the baseline, each day, using a contrast analysis (simple) about within a subject factor at a significance level of 0.05. RESULTS: Result of a repeated measures analysis regarding the surface microhardness of topical fluoride agents, there were significant differences at P-values of within and between the subject factor (P0.05). CONCLUSIONS: In this study, although there were significant differences at P-values of within and between the subject factor, there were no significant differences between the experiment groups on chemical pH cycling model in vitro, and it was limited to utilize this result in a clinical situation of the fluoride application.

Comparison of photodynamic bactericidal effects of erythrosine against Streptococcus mutans and Streptococcus sobrinus by different wavelength of LED lights / 대한구강보건학회지

No abstract available.

The differences of oral health-related behaviors by type of school among high school students in Gangneung city / 대한구강보건학회지

OBJECTIVES: The principle purpose of this study was to investigate the differences of oral health-related behaviors by a type of school among high school students in Gangneung city. The secondary purpose was to assess the influences of other factors (father's education status, mother's education status, subjective economic status, FAS, experienced part-time job, pocket money and perceived stress) on these differences. METHODS: A cross-sectional survey of 1,282 high school students was conducted in Gangneung city. The response rate was 93.4%; general high school students were 773 and vocational high school students were 509. The data were collected by self-administered structured questionnaires. The differences of oral health-related behaviors of high school students by school type were assessed by a chisquare test. Logistic regression models were used to analyze the influences of other factors on these differences. RESULTS: Oral health-related behaviors were markedly better in students attending general high school, rather than vocational high school (P<0.001). The differences of oral health-related behaviors by school type were persisted after adjusting for gender (Model 1), socio-economic factors (Model 2), part-time job and pocket money (Model 3), psychological variables (Model 4) and all variables (Model 5), except for visiting a dental clinic. CONCLUSIONS: We found a marked influence of school type in oral health-related behaviors. This finding suggests that school type is a risk factor of oral health-related behaviors in high school students. Therefore, one of the best ways to enhance oral health for high school students is to develop oral health promotion programs for vocational high school students.