Effects of commercial plum beverage on the dentin surface of bovine teeth

Abstract : Objectives: We investigated the effects of commercial plum beverage on the dentin surface that could be exposed to caries, gliopathy, and abrasion to investigate the inhibitory effects of dentin corrosion. Methods: The experimental beverages were Jeju Samdasoo (Group 1, negative control), Coca-Cola (Group 2, positive control), Chorok Maesil (Group 3), and Chorok Maesil with 3% calcium lactate added (Group 4). The specimens were prepared and divided into 4 groups of 12 each. The pH of the experimental beverages was measured using a pH meter, and specimen surface hardness was assessed according to the Vickers hardness number (VHN). The specimens were immersed in the experimental beverage for 1, 3, 5, 10, and 15 minutes. Then, we obtained the average VHN by measuring surface microhardness. Measures of surface microhardness were compared using the paired t-test before and after 15 minutes of immersion in each of the four beverages. Between-group differences in surface microhardness were compared using one-way analysis of variance and the Tukey test after the analysis. Results: After 15 minutes of immersion in the experimental beverages, there was no significant difference in surface microhardness in group 1 (P>0.05). There were significant differences in groups 2, 3, and 4 (P

A study on the Korean dental education system

Abstract : Objectives: This study aimed to propose criteria for evaluating the validity of dental education systems in Korea and suggest future directions for their improvement.Methods: We looked into dental educational institutions and derived criteria for analysis and comparison of dental education systems in Korea. Using analytical methods, we compared the strengths and weaknesses of each education system, and suggested core areas of improvement.Results: Considering the demands placed on the Korean dental education sector, it is desirable to have an integrated education system that includes the preliminary and main courses, comprehensive training linking the basic medicine and clinical practice, and complete career guidance.Conclusions: A good dental education system is one that meets the educational goals set by a dental school. If the goal is to train a student to be a good dental practitioner, a 2+4 or 4+4 system is recommended, while a 3+4 model is more suitable when the objective is to train students to be researchers.

Impact of incivility experienced by dental hygienists on organizational achievement -as a mediating effect of emotional exhaustion

Abstract : Objectives: Workplace incivility is experienced by dental hygienists, who perform a variety of tasks and roles in dentistry. Therefore, to enhance the performance of dental and medical institutions, it is necessary to identify dental hygienists experiencing incivility that affects the organizational performance. Methods: Over a two-month period from May 1 to June 30, 2015, dental hygienists from 30 dental and medical institutions in Busan, the North and South Gyeongsang Provinces, Daegu, Seoul, and the Gyeonggi Province were convenience sampled. Data, from a total of 344 participants, were analyzed using the SPSS and AMOS statistical analysis software. Results: Emotional exhaustion had a partial mediating effect on the relationship between patient incivility and job performance, a full mediating effect in relation to job satisfaction, and a partial mediating effect on the association with turnover intention. Meanwhile, emotional exhaustion had a full mediating effect on the relationships between superior incivility and job performance, as well as turnover intention, while a partial mediating effect in relation to job satisfaction. Conclusions: An in-depth review of interventions that can enable a mutually respectful working environment, and promote a healthy culture among dental hygienists in dental and medical institutions is needed.

Effects of Diospyros kaki peel, Momordica charantia, and Canavalia gladiata extracts on the cariogenic traits of Streptococcus mutans

Abstract : Objectives: The purpose of this study is to determine methods of dental caries prevention by investigating the use of compounds of Diospyros kaki (D. kaki) peel, Momordica charantia (M. charantia), and Canavalia gladiata (C. gladiata) extracts to limit the cariogenic traits of Streptococcus mutans (S. mutans), such as their ability to proliferate and adhere to the tooth surface. Methods: Broth microdilution and the agar spreading assay were used to determine the antimicrobial effect and minimum inhibitory concentration (MIC) of S. mutans extracts. In order to identify the adhesive ability of S. mutans at varying concentrations, culture plates were first stained with 1 ml of 0.01% crystal violet for 15 minutes at room temperature, and then eluted with 1 ml of EtOH:Acetone (8:2) solution for 15 minutes in a 37°C incubator. Eluted solutions were then evaluated by use of a spectrophotometer at 575 nm. Results: Experiments were conducted in order to investigate the effectiveness of D. kaki peel, M. charantia, and C. gladiata extracts on limiting the proliferation of S. mutans. The MIC was measured as an indication of whether the antibacterial activity of D. kaki peel, M. charantia, and C. gladiata extracts had a significant bacteriostatic effect on S. mutans. M. charantia extract was effective for growth inhibition on S. mutans at a minimum concentration of 0.25%. From the adhesion ability assay, M. charantia extract had an anti-adhesive effect. Conclusions: These results indicate that M. charantia extract demonstrates antibacterial activity and has an anti-adhesive effect on S. mutans. Due to these properties, M. charantia extract may be used to prevent dental caries.

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

Abstract : 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

Message for periodontal health promotion by host activation through gingival stimulation of toothpick method

A study of the impact of dental hygienist concern on oral health care of the elderly

Abstract : Objectives: There is currently little research on dental hygienists' interest and need related to oral care. To perform elderly oral care effectively, dental hygienists must understand the features of aging in the elderly. The purpose of this study is to investigate how dental hygienists' interest affects oral care for the elderly. Methods: 232 dental hygienists completed a self-reported questionnaire from March to April 2019. The questionnaires consisted of general characteristics of the subjects (6 items), elderly patient experience (11 items), and questions regarding aging (7 items). This study analyzed collected data by frequency analysis, ANOVA, Pearson correlation analysis, and multiple regression analysis. Results: Correlation analysis between concern, need, and participation in elderly oral care showed a significant amount of correlation among all variables. We found that gender (P=0.022), education level (P=0.029), workplace type (P=0.002), and the proportion of future elderly patients were statistically significant (P=0.001) factors affecting the level of concern. Conclusions: The results of this study suggest that experience in treating and caring for the elderly are essential factors for raising the interest and understanding of oral health care for elderly patients. Therefore, we should consider the development of various programs to raise interest in oral health for the elderly.

In vitro fluoride release from five different fluoride varnishes

Abstract : Objectives: This study aims to compare the fluoride-release between different fluorine varnish under in vitro experimental conditions. Methods: In this study, 5 fluoride varnish products distributed in Korea were selected. V-varnish™ (Vericom, Korea: VV), CavityShield™ (3M ESPE, USA: CS), Clinpro™ White varnish™ (3M ESPE, USA: CP), MI Varnish™ (GC, Japan: MI), and Fluor Protector (Ivoclar Vivadent, Liechtenstein: FP). For the in vitro study, 10 mg of each fluoride varnish was thinly applied to the same area of the specimen. The specimen was then immersed in 3 ml of distilled water at consistent intervals to confirm fluoride release. Nine specimens per group were used. Fluoride ion electrodes were used to measure the fluoride concentration of the solution. The Kruskal-Wallis nonparametric test was performed to compare between each experimental group, and the Wilcoxon signed-rank nonparametric test was performed to compare experimental groups over time. The significance level for a Type I error was set at 0.05. All statistical analyses were performed using SPSS 25.0 (IBM Co., Armonk, NY, USA). Results: In vitro experiments showed that the amount of fluoride released from MI was higher than the other groups during the first 12 hours after application. However, the amount of fluoride released from CP and CS was higher than MI as the immersion time increased over 12 and 20 hours, respectively. The fluoride release from FP was the lowest at all measurement points. Conclusions: The results of this study showed that the remaining fluoride effect from rosin type fluoride varnishes was higher than liquid type fluoride varnishes. There were differences in the residual fluoride concentrations despite each fluoride varnish having the same fluoride content.

The future of preventive dentistry and the fourth industrial revolution

Relationship between health risk behaviors, oral health-related behaviors, and experiences of oral symptoms in Korean adolescents: based on 2018 Korea Youth Risk Behavior Web-based Survey

Abstract : Objectives: This study investigates the relationship between risky health behaviors, occurrence of oral symptoms, and oral health-related behaviors. Methods: The subjects were 60,040 adolescents selected from the web-based survey from the 2018 Korean Youth Health Behavior of Korean Center for Disease Control. The data were analyzed using a combined sample analysis method. The software SPSS version 12.0 was used to conduct the analyses. Results: 1. Men were observed to partake in risky health behavior at significantly higher rates than were women in terms of smoking, drinking, drugs, and sexual intercourse. Our data showed the percentages of men taking part in these behaviors to be 21.1%, 46.4%, 1.3%, and 7.6%, respectively (P