【Objective】To evaluate the treatment effect of maxillary protraction on skeletal class Ⅲ high angle cases in mixed dentition.【Methods】Nine patients were treated with combined posterior occlusal acrylic and maxillary protraction.The cephalometric radiographs were analyzed before and after the treatment.【Results】The maxilla and maxillary dentitions moved forward.Overjet increased by 4.18mm (P<0.001).The anterior and posterior total face height increased.The maxilla and mandible showed no significant rotation.Profiles were improved to some extent.【Conclusion】A combined posterior occlusal acrylic and maxillary protraction can correct the sagittal maxillo-madibular interrelationships,with no unfavourable influence on facial vertical dimension.But the treatment does not change the vertical skeletal pattern.

Objective:To analyze the current situation of health education among medical staff at all levels of hospitals in Beijing, for references in improving the level of hospital health education.Methods:From July to November 2022, a stratified random sampling method was used to select medical staff from hospitals at all levels in Beijing as the survey subjects. A self-designed questionnaire was used to investigate the frequency of health education conducted by medical staff in six dimensions. The Likert 5-level scoring method was used to assign scores to the frequency of health education, and latent profile analysis was conducted on each score to explore the categories of health education conducted by medical staff.Results:2 792 questionnaires were effectively collected, among which 2 792 medical staff were surveyed, including 1 009 doctors, 1 609 nurses, and 174 technicians and pharmacists. The scores for the frequency of health education conducted in six dimensions: health education in the media or outside the hospital, health knowledge lectures in the hospital, outpatient health education, inpatient health education, health education during follow-up, and health prescriptions were (1.45±0.68) points, (1.68±1.01) points, (2.65±1.65) points, (2.76±1.74) points, (3.24±1.58) points, and (2.59±1.71) points respectively. According to latent profile analysis, healthcare personnel conducting health education could be divided into four categories: low development group (46.6%, 1 300 people), high development group (4.6%, 129 people), inpatient/follow-up development group (19.4%, 541 people), and outpatient/follow-up development group (29.4%, 822 people). The hospital level and profession of medical personnel in each category were different, and the differences were statistically significant( P<0.001). Conclusions:Medical staff in Beijing mainly carry out health education at such stages as patient follow-up, inpatient, and outpatient, but there is insufficient health education accessible in the media or outside the hospital. There are differences in the health education situation of medical personnel at different levels of hospitals and professions. It is recommended to build an efficient health education management system, actively explore new media-based health education channels, and reasonably allocate health education resources to comprehensively improve the health education of medical staff.