Objective To investigate the effect of MOTOmed intelligent training system training on balance and lower limb motor function in stroke patients. Methods 120 stroke patients were randomly divided into observation group (n=60) and control group (n=60) according to the random number table. Both groups were treated with routine rehabilitation training, the observation group received MOTOmed intelligent training system in addition. They were evaluated with Fugl-Meyer assessment (FMA), Functional Ambulation Category (FAC), Barthel index (BI), Motricity index (MI-L), modified Ashworth scale (MAS) and Berg balance scale (BBS) before and 4, 8, 12 weeks after treatment. Results There was no difference in the score of FMA, BI, MI-L, BBS, MAS, FAC and the maximum walking speed, stride length and stride frequency between 2 groups before treatment (P>0.05). The scores of FMA, BI, MI-L, BBS, FAC and the maximum walking speed stride length and stride frequency increased in the observation group and there was a uptrend 4 weeks, 8 weeks and 12 weeks after treatment (P<0.05). The score of MAS decreased in the observation group and there was a downtrend after treatment (P<0.05). All the indexes were better in the observation group than in the control group (P<0.05). Conclusion MOTOmed training system combined with routine rehabilitation training can improve the balance and lower limb motor function in stroke patients.

Objective To analyze the problems found in the on-site quality assessment of occupational medical examination (OME) institutions in Guangdong Province. Methods A total of 150 OME institutions were selected as the research subjects from Guangdong Province in 2023 using a random number table method. The on-site quality assessment was conducted by listening to reports, meeting discussion, on-site inspection, data review and human-machine assessment. The relevant assessment results were analyzed. Results Occupational disease prevention and treatment institutes (institutes, centers) and disease control and prevention centers (hereinafter referred to as "occupational prevention institutions"), public hospitals, and private institutions accounted for 8.7%, 51.3%, and 40.0% respectively. The top three categories of registered inspections were physical factors, chemical factors and dust, accounted for 98.0%, 96.7% and 96.0%, respectively, among the 150 OME institutions. A total of 1 063 rectification items were identified, and the average number of rectification items identified per occupational prevention institutions, public hospitals and private institutions was four, six and nine, respectively. The rectification rates of the four modules of quality assessment from high to low were OME work quality control, quality management system, organizational structure, and OME information reporting, accounted for 53.2%, 23.3%, 13.7% and 9.7%, respectively. The coincidence rate from high to low of occupational reporting of noise-exposure, dust-exposure, and other hazard-exposure was 92.5%, 91.1%, and 93.4%, respectively. The on-site failure rate of quality control director, technical director, chief physician, pneumoconiosis film reader, audiometry reader and pulmonary function examination operator accounted for 15.3%, 12.7%, 8.0%, 6.7%, 6.0% and 2.7%, respectively. Institutions capable of conducting registered and partially registered OME accounted for 90.7% and 6.0%, respectively. The five institutions that were unable to conduct registered OME were private institutions. A total of five private institutions were found to be suspected of illegal and irregular activities. Conclusion The problems of OME in the on-site quality assessment of OME institutions in Guangdong Province were mainly quality control. Private institutions had more prominent problems in various aspects. It is necessary to strengthen the training of key personnel such as technical directors, quality control directors, and chief physicians.

ObjectiveTo establish a managing mode for illegal and irregular acts of occupational medical examination (OME) institutions to the requirements of the new situation. Methods The OME institutions from the “Guangdong Province Key Occupational Disease Monitoring and Management Platform” were selected as the study subjects using the judgment sampling method. The clues of suspected illegal and irregular acts of OME institutions were found and submitted to the local health commission for investigation and managed according to the case information monitoring and on-site quality assessment. The OME institutions found to have illegal and irregular acts were filed and investigated according to the national law after investigation and verification. A “follow-up inspection” was conducted on five OME institutions for closed loop management. Results A total of 12 OME institutions were found to have suspected illegal and irregular acts, including seven institutions that did not meet the filing requirements for effective personnel, five institutions that conducted projects beyond the scope without filing to the provincial health authorities within 15 work days from the start of the project, and two institutions that failed to fulfill the obligation of informing and reporting to the health authorities, employers, and workers as required. After submitting relevant clues and evidence to the local health commission for investigation and management, seven institutions were not given penalty, and five institutions were given administrative penalties including two institutions were fined and warned, and three institutions were warned. No illegal or irregular acts were found in the five institutions inspected during the “follow-up inspection”. Conclusion It is beneficial to explore the managing mode of “clue discovery, clue submission, investigation and disposal, follow-up inspection” for OME institutions suspected of illegal and irregular acts, which helps urge OME institutions to work in accordance with laws and regulations and effectively protect the legitimate rights and interests of workers' occupational health.

Objective To analyze the spatial relationship between the roots of maxillary anterior premolars and the maxillary sinus,thus providing an anatomical basis for timing,planning,surgical approaches,and implant selection at this site.Methods Cone beam CT(CBCT)images were collected from 264 patients(aged 20-65 years)who visited the Ruihua Dental Clinic between January 2017 and March 2023.The minimum distance from the apex of the maxillary an-terior premolar roots to the lower wall of the maxillary sinus was measured on the coronal plane.The classification of the vertical relationship between the tooth root and the lower wall of the maxillary sinus was performed,and comparisons were made bilaterally,between genders,and among different age groups.Results The minimum distance(Q50)from the apex of the first maxillary premolar root to the lower wall of the maxillary sinus was 7.34 mm for the single-root type,7.80 mm for the buccal root of the double-root type,and 7.36 mm for the palatal root.For the second maxillary premo-lar,the median distance was 2.56 mm for the single root type,1.73 mm for the buccal root type,and 1.23 mm for the palatal root type.There was a significant difference in the shortest distance from the apex of the right second maxillary premolar single root to the lower wall of the maxillary sinus among the different age groups(P＜0.05),with the 20-29-year-old group having the smallest median distance(1.52 mm)and the≥40-year-old group having the largest(4.44 mm).There was no significant difference in the effect of sex or laterality on distance(P＞0.05).The most common vertical relationship between the apex of the maxillary anterior premolar roots and the lower wall of the maxillary sinus was non-contact.There was no significant difference in the vertical relationship classification between the single-root and dou-ble-root types(P＞0.05).Conclusion Most maxillary first premolar roots can provide sufficient bone height,which makes it easy to achieve immediate implantation.The maxillary second premolar root frequently involves insufficient bone,which is necessary to make full use of the bone wall of the extraction socket or the sinus floor cortical bone to achieve initial stability.The vertical relationship between the premolar root and maxillary sinus was influenced by age and dental position.Younger age groups often exhibit inadequate bone height,and the indication for immediate implan-tation should be carefully considered.The number of roots does not significantly affect the relationship between the sinus and root;however,double-rooted premolars offer more support for immediate implantation and socket healing due to the small root diameter and bony separation between the roots.