Alveolar bone is both morphologically and functionally different from other bones of the axial or peripheral skeleton. Because of its sensitive nature to external stimuli including mechanical stress, bone loss stimuli, and medication‐related osteonecrosis of the jaw, alveolar bone rendering is seen as an important factor in various dental surgical processes. Although multiple studies have validated the response of long bone to various factors, how alveolar bone responds to functional stimuli still needs further clarification. To examine the characteristics of bone in vitro, we isolated cells from alveolar, femur, and tibia bone tissue. Although primary cultured mouse alveolar bone‐derived cells (mABDCs) and mouse long bone‐derived cells (mLBDCs) exhibited similar osteoblastic characteristics, morphology, and proliferation rates, both showed distinct expression of neural crest (NC) and epithelial–mesenchymal interaction (EMI)‐related genes. Furthermore, they showed significantly different mineralization rates. RNA sequencing data demonstrated distinct transcriptome profiles of alveolar bone and long bone. Osteogenic, NC‐, and EMI‐related genes showed distinct expression between mABDCs and mLBDCs. When the gene expression patterns during osteogenic differentiation were analyzed, excluding several osteogenic genes, NC‐ and EMI‐related genes showed different expression patterns. Among EMI‐related proteins, BMP4 elevated the expression levels of osteogenic genes, Msx2, Dlx5, and Bmp2 the most, more noticeably in mABDCs than in mLBDCs during osteogenic differentiation. In in vivo models, the BMP4‐treated mABDC group showed massive bone formation and maturation as opposed to its counterpart. Bone sialoprotein expression was also validated in calcified tissues. Overall, our data suggest that alveolar bone and long bone have different responsiveness to EMI by distinct gene regulation. In particular, BMP4 has critical bone formation effects on alveolar bone, but not on long bone. © 2020 The Authors. JBMR Plus published by Wiley Periodicals, Inc. on behalf of American Society for Bone and Mineral Research.

The purpose of this study was to understand the effectiveness of oral health education (OHE) or oral hygiene instruction (OHI) involving professional plaque control/removal, as compared to conventional plaque control/removal. By means of a systematic review of the literature, in the review of literature by using systematic method, Korean articles of plaque control including OHE or OHI, were studied in order to analyze and conclude the literature to enhance oral health. We found that self and professional plaque control/removal, in addition to tooth brushing instructions, decreased incidence and prevalence of loss of teeth. Taken together, professional mechanical plaque removals were most effective 4∼5 visits every 1∼2 weeks. Use of disclosing agent was more effective than oral education or model education. In line with oral hygiene education, professional brushing, oral prophylaxis, scaling and root planing, it was advisable to repeat the training according to the characteristics of the patient. Routine OHE or OHI would be help to increase to oral health. For a quality of life related oral health, reliability and validity of data are needed to develop and its data should be applied to dental health insurance policy.

Objective:The purpose of this study was to provide basic data for the development of strategies to improve the learning effect by analyzing a reflective paper after the public health center practice of dental hygiene education.Methods: From May 13 to June 7, 2019, 4th-year dental hygiene department students at B university in A city were asked to write a reflective diary on the practice after practice at the public health center, and the data were analyzed. The reflection logs submitted after the practice were analyzed using Colaizzi's phenomenological data analysis method.Results: As a result of phenomenological data analysis, the categories of change in perception of public health centers, rediscovery of the role of dental hygienists in the community, emotional experience, professional experience, practical system, and communication were derived. Conclusion:Through the analysis of the reflection diary, it was possible to identify the psychological and internal changes of the students, and through this, the prejudice against health center practice was eliminated and the image of health center practice and health center staff was positively changed. It was also an important process to reflect on the role of a dental hygienist, feeling rewarded for the re-recognition of the work part and the tense practice time. Through this practice analysis, it is expected that the learning effect can be improved by fully understanding the role of dental hygienists in public health centers.

to investigate the correlation between stress and oral health Data were obtained from 393 women students of 5 colleges in Gwangju and Jeollanam-do. The oral health of college students is related with the stress which has a correlation between oral condition satisfaction(-) and inconvenient(＋) of mastication and pronunciation (p＜0.01). Also, factors affecting stress are discomfort during mastication and oral state satisfaction and discomfort during mastication. The discomfort during mastication showed the highest stress while the higher status of oral satisfaction showed lower stress (p＜0.05). Therefore, college women stress is related with oral health. Colleges should consider developing a program which can appropriately manage and regulate stress to relieve their stress.

Objective:The purpose of this study is to investigate the clinical skill proficiency in the core dental hygiene competency of dental hygienists.Methods: One hundred dental hygienists living in Gwangju and Jeollanam-do participated in the study. Data were analyzed with IBM SPSS Statistics for ver. 20.0 (IBM Co., Armonk, NY, USA) for general characteristics, execution of core dental hygiene competency, frequency analysis of the questionnaire, and correlations of one-way ANOVA and Pearson were analyzed. Results:The ranking of the core dental hygiene competency skill requirement was temporary filling and removal (3.43±1.40), toothbrushing education (3.38±1.36), and dental radiography (3.36±1.37). In relation to core competencies for dental hygiene by experience, temporary crown making, temporary filling and removal, removal and installation of temporary attachments, and infection control in 5 years or more were found to exist (p＜0.05). In the correlation between dental hygiene core competency skill requirement, age and radiography showed a significant positive correlation, and experience and temporary filling and removal showed a significant negative correlation (p＜0.05). Conclusion:There were significant differences in the general characteristics of dental hygienists and educational requirements by age and experience. It is necessary to improve various educational programs and evaluation methods to achieve students' clinical competency in schools.