Purpose: This study aims to verify whether the Reflective Practice Questionnaire (RPQ) developed by Priddis and Rogers is valid in the Korean context to identify the level of reflection of medical students in clinical practice. Methods: A total of 202 third- and fourth-year medical students from seven universities participated in the study. After receiving approval for use from the authors, a survey was conducted on the students through an adaptation process. The original scale consists of 10 factors with 40 items. The Self-efficacy in Clinical Performance Scale (SECP), Korean Self-reflection and Insight Scale (K-SRIS), and Reflection-in-Learning Scale (RinLS) were used to validate the scale. Exploratory factor, confirmatory factor, correlation, and reliability analyses were used for data analysis. Results: As a result of exploratory factor analysis, 10 subfactors were extracted (Kaiser-Meyer-Olkin=0.856, Bartlett’s test: χ 2 =5,044.337, degrees of freedom=780, p<0.001). Among the 40 items, one that showed a high overlapping load for other factors was excluded. As a result of confirmatory factor analysis, the 10-factor structure model was found suitable (χ 2 =1.980, comparative fit index=0.859, Tucker-Lewis index=0.841, root mean square error of approximation=0.070). As a result of the criterion validity test, most of the subfactors of the Korean version of the RPQ (K-RPQ) showed a positive correlation with K-SRIS, RinLS, and SECP. The reliability of 10 subfactors was satisfactory, ranging from 0.666 to 0.919. Conclusion The K-RPQ was confirmed to be a reliable and valid tool to evaluate the level of reflection among Korean medical students in clinical clerkship. This scale can be used as a tool to provide feedback on each student’s level of reflection in clinical clerkship.

Purpose: The purpose of this study is to analyze the accreditation standards items related to the decision of accreditation of medical schools by the Korea Institute of Medical Education and Evaluation (KIMEE). Methods: The subjects are medical schools in Korea that have received post-2nd cycle accreditation from the KIMEE between 2012 and 2016. Analyses were conducted for differences in accreditation decisions according to the characteristics of medical schools, sufficient ratios of basic standards items, and correlation between standards items related to accreditation decisions. Results: After examining differences in accreditation decisions by the medical school’s characteristics, there were no significant correlations between accreditation standard items and accreditation decisions. Second, according to the number of schools that sufficiently or insufficiently met each standard item, from the total of 97 standard items, 20 (20.6%) were sufficiently fulfilled by all medical schools. Standard item 2-5-2 demonstrated the highest insufficiency ratio. Third, with respect to the standard item that had an effect on accreditation decisions, standard item 1-5-1 showed the highest correlation with the sufficiency rate. Conclusion The validity of accreditation standards items was assured as this study evaluated the post-2nd cycle accreditation standards items regardless of each medical school’s characteristics. The accreditation standards items were found to have a meaningful impact on the development of medical schools and qualitative improvement in medical education. The findings are expected to contribute to guaranteeing the validity and reliability of accreditation decisions and raising the quality of accreditation.

Purpose: Today's students have distinctive generational characteristics and increased psychopathology and generational tension. The authors investigated the negative experiences of Late Millennial students in medical school to draw implications for student support. Methods: The authors explored medical students’ negative experiences using the critical incident technique. The authors conducted semi-structured in-depth interviews with 13 medical students, between February and May 2016. The authors focused on occurrences that significantly influenced medical students’ school lives negatively from the students’ perspective. All interviews were recorded and transcribed. The authors classified incidents into frames of reference for the use of faculty development for student support. Results: The authors extracted 22 themes from a total 334 codes and classified them into eight subcategories. Finally, four categories emerged from frames of reference. Students manipulate relationships and colluding for better specialty choice. They experience uncontrolled rifts in interpersonal relationships between peers including lawsuits, sexual assaults, and social network service conflicts. Today’s students feel resentment towards dependent hierarchical relationships with seniors. They struggle with gender discrimination but perpetuate outdated gender role toward the opposite gender. Conclusion Faculty members should understand today’s students’ level of career stress and desire for work life balance. They should motivate students’ professional identity, promote assertiveness against unfair authorities, and focus on mental health, teamwork, and relationship building. All generations need to understand other generations and develop appropriate leadership and gender sensitivity.

Traditional removable partial denture is a successful treatment for partial edentulous patients. When the abutment is formed with unilateral minority teeth, satisfaction with the use of removable partial denture may be lowered due to patient's discomfort and damage of the abutment. Recently, it has been reported that the unilateral posterior extension partial denture is used as a bilateral posterior extension partial denture using implant fixed prostheses as abutments. In this case, by using implant surveyed crown prostheses, bilateral posterior extension partial denture is fabricated in site that is predicted to have a poor prognosis. This resulted in improved support, maintenance, and stabilization of the removable partial denture, which were economically beneficial to patient and satisfied with use.
Crowns ; Denture, Partial ; Denture, Partial, Removable ; Humans ; Prognosis ; Prostheses and Implants ; Tooth

PURPOSE: To analyze stress distribution in premolars restored with inlays or onlays using various materials. MATERIALS AND METHODS: Three-dimensional maxillary premolar models of abutments were designed to include the following: 1) inlay with O cavity (O group), 2) inlay with MO cavity (MO group), 3) inlay with MOD cavity (MOD group), and 4) onlay (ONLAY group). A restoration of each inlay or onlay cavity was simulated using gold alloy, e.max ceramic, or composite resin for restoration. To simulate masticatory forces, a total of 140 N static axial force was applied onto the tooth at the occlusal contact areas. A finite element analysis was performed to predict the magnitude and pattern of stresses generated by occlusal loading. RESULTS: Maximum von Mises stress values generated in the abutment teeth of the ONLAY group were ranged from 26.1 to 26.8 MPa, which were significantly lower than those of inlay groups (O group: 260.3–260.7 MPa; MO group: 252.1–262.4 MPa; MOD group: 281.4–298.8 MPa). Maximum von Mises stresses generated with ceramic, gold, and composite restorations were 280.1, 269.9, and 286.6 MPa, respectively, in the MOD group. They were 252.2, 248.0, 255.1 MPa, respectively, in the ONLAY group. CONCLUSION: The onlay design (ONLAY group) protected tooth structures more effectively than inlay designs (O, MO, and MOD groups). However, stress magnitudes in restorations with various dental materials exhibited no significant difference among groups (O, MO, MOD, ONLAY).
Alloys ; Bicuspid ; Bite Force ; Ceramics ; Dental Materials ; Finite Element Analysis ; Inlays ; Tooth

Long-term alveolar bone resorption in edentulous patient causes difficulty in denture use. Applying an implant overdenture with 2 to 4 implants to edentulous patient is easily approachable. Moreover, it improves denture stability, support, and retention. Milled bar, the attachment used in implant overdenture, can be used to induce better stability and retention to the supporting structure than conventional bar. It has become convenient to use due to the development of CAD/CAM system which had allowed the simplification of dental techniques. In this case, application of conventional maxillary full denture and mandibular overdenture made of CAD/CAM milled bar with 4 implants showed satisfactory results in the patient who had used upper and lower full dentures for a long time.
Bone Resorption ; Denture Retention ; Denture, Overlay* ; Dentures ; Humans ; Rehabilitation*

Overdenture using dental implants could improve the problems of conventional complete denture function which are pain during mastication, insufficient retention and stability. Locator attachment used widely for implant-retained overdenture has advantages that it needs the smallest vertical space and also its nylon male cap allows personalized retention for each case. However its retention force decreases rapidly with function rather than the bar and ball attachment. So, implant fixture should be positioned as parallel as possible.
Dental Implants ; Denture, Complete ; Denture, Overlay* ; Humans ; Male ; Mandible* ; Mastication ; Nylons

PURPOSE: To investigate the effect of non-thermal atmospheric pressure plasma (NTAPP) treatment on shear bond strength (SBS) between resin cement and colored zirconia made with metal chlorides. MATERIALS AND METHODS: 60 zirconia specimens were divided into 3 groups using coloring liquid. Each group was divided again into 2 sub-groups using plasma treatment; the experimental group was treated with plasma, and the control group was untreated. The sub-groups were: N (non-colored), C (0.1 wt% aqueous chromium chloride solution), M (0.1 wt% aqueous molybdenum chloride solution), NP (non-colored with plasma), CP (0.1 wt% aqueous chromium chloride solution with plasma), and MP (0.1 wt% aqueous molybdenum chloride solution with plasma). Composite resin cylinders were bonded to zirconia specimens with MDP-based resin cement, and SBS was measured using a universal testing machine. All data was analyzed statistically using a 2-way ANOVA test and a Tukey test. RESULTS: SBS significantly increased when specimens were treated with NTAPP regardless of coloring (P<.001). Colored zirconia containing molybdenum showed the highest value of SBS, regardless of NTAPP. The molybdenum group showed the highest SBS, whereas the chromium group showed the lowest. CONCLUSION: NTAPP may increase the SBS of colored zirconia and resin cement. The NTAPP effect on SBS is not influenced by the presence of zirconia coloring.
Chlorides ; Chromium ; Molybdenum ; Plasma Gases ; Plasma* ; Resin Cements*

The purpose of this study is to investigate domestic and international research trends in studies of medical students' characteristics by using the scoping review methods. This study adopted the scoping review to assess papers on the characteristics of medical students. The procedure of research was carried out according to the five steps of the scoping review. The full texts of 100 papers are obtained and are read closely, after which suitable 88 papers are extracted by us for this research. The review is mapped by the year of the study, source, location, author, research design, research subject, objective, and key results. The frequency is analyzed by using Microsoft Excel and SPSS. We found 70 papers (79.5%) on a single medical school, 15 (17.0%) on multiple medical schools, and three (3.4%) on mixed schools, including medical and nonmedical schools. Sixty-nine (79.5%) were cross-sectional studies and 18 (20.5%) were longitudinal studies. Eighty-two papers (93.2%) adopted questionnaire surveys. We summarized research trends of studies on medical students in Korea and overseas by topic, and mapped them into physical health, mental health, psychological characteristics, cognitive characteristics, social characteristics, and career. This study provides insights into the future directions of research for the characteristics of medical students.
Cross-Sectional Studies ; Humans ; Korea ; Longitudinal Studies ; Mental Health ; Research Design ; Research Subjects ; Schools, Medical ; Sociological Factors ; Students, Medical

In the treatment of esthetically important areas such as maxillary anterior teeth, they should be corresponded with surrounding tissues, and shape of the smile line, soft tissue, and hard tissue, also the anatomical shape and proportion of the teeth should be considered as well. Esthetic analysis includes facial analysis which evaluates the proper parallelism between the occlusal plane and the horizontal reference line, dentolabial analysis which assesses the position of the incisal edge and the coherence between the occlusal plane and the commissural line, tooth analysis which evaluates not only esthetics but also morphology and appearance for proper function, and gingival analysis which forms ideal outline of gingival margins. A maxillary anterior diastema can be esthetically restored through the systematic diagnostic approach and treatment planning, and orthodontic, prosthetic, and conservative treatment can be applied for the treatment.
Dental Occlusion ; Diastema ; Esthetics ; Humans ; Prostheses and Implants ; Tooth