Spatial accessibility to health services influences service utilisation and eventually impacts the disease burden. This cross-sectional study analysed the spatial accessibility of schoolchildren to public oral health facilities and school dental services (SDS) and vice versa in Selangor. Overlay and proximity analysis from geo-mapping software was employed to map the primary dental clinics with SDS, the public schools, and the proximity between primary dental clinics with SDS and public schools by travelling distance (5 km, 10 km, 20 km) and travelling time (15 min, 30 min). Over half of the schoolchildren in Selangor are within 5 km of accessibility to primary dental clinics and SDS teams. Meanwhile, nearly half of the primary and secondary schools, particularly in rural areas, are located within a more than 5 km service area of public oral health facilities. The SDS teams have a travel burden of more than 20 km to the public schools in Selangor's northern and north-western districts of large geographical areas. Simultaneously, most public primary and secondary schools are within 15 min of driving time from primary dental clinics. Geo-mapping highlights the inequalities in spatial accessibility to public oral health facilities with SDS among schoolchildren in Selangor. It is time to prioritise the resources, SDS, and preventive programmes to reduce inequalities in oral health accessibility among schoolchildren in Selangor.
The current study aims to provide a roadmap for future research by analyzing the research structures and trends in scholarly publications related to the status of zinc in public health. Only journal articles published between 1978 and 2022 are included in the refined bibliographical outputs retrieved from the Web of Science (WoS) database. The first section announces findings based on WoS categories, such as discipline heterogeneity, times cited and publications over time, and citation reports. The second section then employs VoSViewer software for bibliometric analysis, which includes a thorough examination of co-authorship among researchers, organizations, and countries and a count of all bibliographic databases among documents. The final section discusses the research's weaknesses and strengths in zinc status, public health, and potential future directions; 7158 authors contributed to 1730 papers (including 339 with publications, more than three times). "Keen, C.L." is a researcher with the most publications and a better understanding of zinc status in public health. Meanwhile, the USA has been the epicenter of research on the status of zinc in public health due to the highest percentage of publications with the most citations and collaboration with the rest of the world, with the top institution being the University of California, Davis. Future research can be organized collaboratively based on hot topics from co-occurrence network mapping and bibliographic couplings to improve zinc status and protect public health.