Simulator education in Japanese dental education.

Advances in information and communication technology (ICT) and digital technology have contributed greatly to the development of educational methods, and new educational styles have been introduced over the past several years. In recent years, it has become possible to provide more realistic simulator training to prepare for patient care through the development of phantom heads with jaws and artificial teeth that reflect actual anatomical structures and composition. While these phantom head simulator resources are becoming more realistic, the development of digital devices utilizing virtual reality has enabled training that is even more realistic than the jaw models, such as scanning the teeth and transfer this scan into a VR model in the simulator which can be used to practice on prior to treating the patient. There was a basic research report on the development of VR haptics simulators in Japan about 20 years ago, but there have been no reports for some time since then, and there are several reports on VR haptics simulators published after 2018. Even now, in terms of utilization in dental education, it is difficult to say that VR haptics simulator has been widely introduced in Japan. The reasons for this may be related to the evaluation system for clinical dental skills in the Japanese dental education system, as well as issues with budgets and in current condition of dental clinical practice in dental schools. It must be that the VR haptics simulator will be utilized in terms of preparatory training for patient care as clinical dental practice participation is enhanced in the future.

Effect of the haptic 3D virtual reality dental training simulator on assessment of tooth preparation.

BACKGROUND/PURPOSE: The haptic 3D virtual reality dental training simulator has been drawn attention as a educational strategy in Covid-19 pandemic. The purpose of this study is to investigate the feature of the haptics simulator in comparison with a conventional mannequin simulator by analyzing the assessment of products prepared by dental students using these two kinds of simulator. MATERIALS AND METHODS: The subjects were 30 students in the sixth-year classes of the faculty of dentistry. Abutments for a full cast crown were prepared by each subject using two kinds of simulator; one is the haptics simulator and the other is a mannequin simulator. For the resulted products, occlusal surface form, margin design, surface smoothness, taper angle, total cut volume and overall impression were rated by 3 evaluators. Score differences between two simulators were statistically analyzed. RESULTS: The kinds of simulator affected subject performance for margin design and total cut volume. The differences in cutting feeling between the simulators as well as variation of stereoscopic ability in subjects were considerable reasons. Evaluators' rating was affected by difference in simulators for occlusal surface form, total cut volume, and overall impression. This may have been due to variation of stereoscopic ability in evaluators. CONCLUSION: The unique characteristics of virtual reality, such as the simulated cutting sensation and the simulated three-dimensional images created by stereo viewers, affect operators' performance and evaluators' rating. It was suggested that educational programs need to be constructed taking account of the characteristics of virtual reality to make the best use of the haptics simulator.

A mixed methods study on the readiness of dental, medical, and nursing students for interprofessional learning.

BACKGROUND: Interprofessional education (IPE) is crucial in dentistry, medicine, and nursing. However, scant mixed methods studies have compared the IPE outcomes across these disciplines to develop evidence-based IPE. This study explored the differences in the readiness of dental, medical, and nursing students for interprofessional learning before and after IPE workshops and elucidated reasons for this disparity. METHODS: Data were obtained from dental, medical, and nursing students who participated in IPE workshops conducted at Tokyo Medical and Dental University in Japan in 2019 and 2020. The participants filled the validated Japanese version of the Readiness for Interprofessional Learning Scale (RIPLS) before and after attending the workshops (n = 378). Paired t-tests were performed to assess differences between the pre- and post- workshop RIPLS scores. Welch's t-tests were deployed to evaluate interdisciplinary differences in their scores. Qualitative analyses were conducted using an explanatory sequential design with focus group discussions (FGDs) held with 17 dental students to explain the quantitative results. RESULTS: Total RIPLS scores increased significantly for every discipline after the workshops (p < 0.001). Dental students scored significantly lower pre- and post- workshop aggregates than medical and nursing students, respectively (p < 0.001). The FGDs yielded three principal themes in the explanations tendered by dental students on their lower scores: 1) dental students rarely felt the need for interprofessional collaborations, 2) dentists often worked without the need for interprofessional collaborations, and 3) dental students believed their contribution to the workshop was insufficient. CONCLUSIONS: The results revealed divergences in the readiness of dental, medical, and nursing students for interprofessional learning, and the study illuminated possible reasons for these disparities. These outcomes will help develop evidence-based IPE by indicating approaches to place a higher value on interprofessional collaborations in educational environments, ameliorate the awareness of educators, and enhance the workshop facilitation style.

Comparison of the quality assurance system of dental professionals in Japan, the EU and the ASEAN.

In recent years, the society requires a flexible response of the dental society to deal with changes in disease structure in the super-aging society in Japan. Regarding quality of dental care, we need to ensure quality of clinical environment, dental professionals and the system. As globalization expands, the health care professionals move to another country to work. In the European Union(EU), the quality assurance system for the graduated European dentist through the activities in undergraduate education has been established and a similar approach is ongoing in the region of the Association of South-East Asian Nations. After the registration, the continuing professional development (CPD) system takes a role on quality assurance for dentist. The DentCPD was an approach to create a standard for CPD in the EU. Regarding the quality assurance system in Japanese dentistry, there were systematic approaches, establishing the model core curriculum in dental education, the common achievement test. Besides them, the quality assurance system for dentist has not been established except the voluntary life-long learning program of the Japan Dental Association. Predicting changes of the society to have quality control for dental professionals, we should prepare the system like the CPD system which matches level of the global standard.

Rise of blood pressure value in young patients at first visit at a dental university hospital in Japan.

BACKGROUND/PURPOSE: Hypertension is a risk factor for stroke and heart disease. Psycho-social reasons are thought to influence blood pressure fluctuation in the dental clinic, but no previous studies have investigated these relationships. In this study, we analyzed a correlation between patients' blood pressure values and their backgrounds. MATERIALS AND METHODS: We measured blood pressure in 4990 outpatients at our hospital. After determining the age groups in which blood pressure deviated from national averages, patients were classified into the Hypertension group and Normal group. Differences between these groups with regard to the prevalence of systemic disease, dental history and reasons for dental consultation were analyzed. RESULTS: Average systolic blood pressure of males in their 20's, 30's, 40's and females in their 20's, 30's, 40's, 50's was significantly higher than national averages. In these age groups, disease prevalence was significantly higher in the Hypertension group than in the Normal group. Furthermore, the Hypertension group expressed psycho-social reasons for dental consultation more frequently than the Normal group. CONCLUSION: Relatively younger patients tended to show higher systolic blood pressure. It was suggested that psycho-social backgrounds as well as medical causes influenced the blood pressure increase.

Cancer Chemoprevention by Phytochemicals and their Related Compounds.

Cancer chemoprevention by phytochemicals may be one of the most feasible approaches for cancer control. For example, phytochemicals obtained from vegetables, fruits, spices, teas, herbs and medicinal plants, such as carotenoids, phenolic compounds and terpenoids, have been proven to suppress experimental carcinogenesis in various organs. These candidates should be evaluated by intervention studies, before acceptance as cancer preventive agents for human application. Phytochemicals may also be useful to develop "designer foods" or "functional foods" for cancer prevention. We are now planning animal foods, such as meats, eggs and milk, which contain anti-carcinogenic phytochemicals. In prototype experiments, expression of genes for synthesis of phytochemicals, such as phytoene and limonene, has been successful in cultured animal cells.