Objective To evaluate the application of modified chairside case-based learning(CBL)in the teaching of dental residents in the prosthodontic clinic.Methods Dental residents in Peking Union Medical College Hospital from September 2022 to September 2024 were enrolled.Traditional CBL was conducted in control group.Modified chairside CBL was conducted in test group.The scores of department rotation examination and questionnaire results were analyzed with t-test statistical analysis.Results The score of"patient reception"in test group was significantly higher than control group(P＜0.05).24 valid questionnaires were collected in two groups each.The rate of approval in test group was significantly higher than control group in the following items of questionnaire,including"reduce learning pressure or burden""improve the capacity of doctor-patient communication""improve the capacity of literature review""improve the capacity of group cooperation"(P＜0.05).Conclusions Modified chairside CBL has showed good teaching effects in improving the capacity of patient reception,doctor-patient communication,literature review,group cooperation,and meanwhile reduced learning pressure or burden.

Objective To explore the need and evaluate the effectiveness for head-simulator in the teaching of sto-matology within the eight-year program of clinical medicine.Methods Questionnaire survey was conducted among the students from 2017 cohort of the eight-year program of clinical medicine at Peking Union Medical College.The survey results were statistically analyzed and described.Results Totally 87.9％of the students believed that incor-porating head-simulator into the clinical practice course of stomatology were necessary,and 93.9％expressed will-ingness to join the training.Most students preferred to practice peri-odontal scaling and cavity preparation for caries during the simulated training sessions.The majority of students considered two or four class hours of simulated head teaching to be reasonable.The pilot head simulation training was successfully implemented;75.0％of the students acknowledged clear teaching and convincible demonstrations.All the trainees agreed that the head simulation course helped them better understand stomatology knowledge,stimulated their interest in learning and expressed a desire for increased head simulation sessions during clinical practice course of stomatology.Additionally,87.5％of the students preferred head simulation training course to be applied in classic clinical clerkships.Conclusions There is strong demand among students of eight-year program of clinical medicine for incorporating head-simulator into the education of stomatology.The pilot simulation training received positive evaluations.Further exploration is needed to optimize specific scheduling and content arrangement.

Objective: To explore the clinical effect of a guided resin cementation technique on vertical food impaction symptoms and to provide a new method for the treatment of vertical food impaction. Methods : Treatment of 76 patients with vertical food impaction with guided resin cementation was performed. A specially fabricated contact shaping wire was used to aid the shaping of the contact. Cementation was applied under a rubber dam with the total-etch technique with flowable composite resin. Patient subjective perception was recorded after treatment (i.e., “totally relieved”=3, “significantly improved”=2, “slightly improved”=1 and “no change”=0). Follow-up visits lasted for one year. Scores of 1 to 3 were recorded as effective. The efficiency rates at different times were calculated. Results: Patient subjective perceptions scored 2.47, 2.21, 1.79, 1.30 and 0.97 on the day immediately after and 1, 3, 6, and 12 months after treatment, respectively. There were significant differences among scores at each time point (P<0.01). The Efficacy rate reached 91.78% immediately after treatment and was sustained above 50% within half a year. Management of resin debonding or fracture successfully relieved the symptoms again. Conclusion The guided resin cementation technique relieves vertical food impaction symptoms immediately, and the effect of the guided resin cementation technique is maintained for a short period of time. Management of resin debonding or fracture helps consolidate treatment outcomes.

Human enterovirus 71 (EV71) is one of the major causative agent of hand,foot and mouth disease (HFMD) in infant.Clinical studies find that EV71 infection can cause a variety of clinical manifestations,from mild HFMD to fatal neurogenic pulmonary edema and even death,but the reasons remain unclear.The capsid protein VP1 of EV71 plays a key role in the processes of viral recognizing,binding and entering into the targeted cells and viral particles assembling.VP1 variation is a major determinant to EV71 fitness and immunogenicity.This study reviews the research progress of the structure,functions and associated antiviral vaccines and drugs of VP1,which further provides a theoretical basis for developing new and more effective antiviral vaccine and drugs.

OBJECTIVETo investigate the acquaintance to orthodontics and possible factors that obstruct orthodontic treatment in middle school students in zones with different economic levels in Jiangjin, Chongqing.

METHODSThe students were randomly divided into four groups: A class from a junior high school in town (group 1), a class from a senior high school in town (group 2), a class from a junior high school in the countryside (group 3), a class from a senior high school in the countryside (group 4). The information was collected by questionnaire, and the statistical analysis of results was carried out by SPSS 17.0 software.

RESULTSSex made difference in the acquaintance to orthodontics treatment. Girls worried more about teeth extraction and pain that may occur during treatment than the boys. Students in the city had more access to related consultations compared to those in the countryside. Different economic conditions made much contribution to the proportion to go for orthodontics treatment in cities and rural areas. The evaluation from families and friends may affect patients' subjective estimation to themselves.

CONCLUSIONOrthodontists should learn more about student patiens from various aspects, and make different therapies according to their sexes, economic conditions of family, education levels, etc. Only so can orthodontists get better compliance from their patients.

Adolescent ; Female ; Humans ; Male ; Orthodontics ; Students