Objective:To systematically search, evaluate, and summarize evidence-based findings related to postoperative oral health management for orthognathic surgery patients, with the goal of providing clinical care professionals with evidence-based guidance for postoperative care, infection prevention, and functional recovery.Methods:Using the "6S" evidence hierarchy model, a systematic search was conducted in databases such as UpToDate, BMJ Best Practice, DynaMed, The Cochrane Library, World Health Organization (WHO), National Institute for Health and Care Excellence (NICE), Guidelines International Network (GIN), Registered Nurses′Association of Ontario (RNAO), Chinese Stomatological Association (CSA), American Association of Oral and Maxillofacial Surgeons (AAOMS), PubMed, and Scopus. The search included literature on postoperative oral health management for orthognathic surgery patients, such as guidelines, clinical decision-making tools, expert consensus, evidence summaries, and systematic reviews, covering publications from database inception to November 12, 2024. Two researchers independently assessed the quality of the included literature and extracted, summarized, and synthesized the evidence.Results:A total of 18 studies were included, consisting of 7 guidelines, 7 systematic reviews, 2 expert consensus documents and 2 randomized controued trials. Twenty-two best evidence statements were summarized, addressing six key areas: oral hygiene and infection prevention, wound care, oral functional recovery, dietary and nutritional support, oral comfort management, and long-term oral health maintenance.Conclusions:This study provides a comprehensive summary of the best available evidence for postoperative oral health management in orthognathic surgery patients. It offers theoretical support for clinical nursing practices and evidence-based recommendations for postoperative care specific to this patient population.

Objective:To systematically search, evaluate, and summarize evidence-based findings related to postoperative oral health management for orthognathic surgery patients, with the goal of providing clinical care professionals with evidence-based guidance for postoperative care, infection prevention, and functional recovery.Methods:Using the "6S" evidence hierarchy model, a systematic search was conducted in databases such as UpToDate, BMJ Best Practice, DynaMed, The Cochrane Library, World Health Organization (WHO), National Institute for Health and Care Excellence (NICE), Guidelines International Network (GIN), Registered Nurses′Association of Ontario (RNAO), Chinese Stomatological Association (CSA), American Association of Oral and Maxillofacial Surgeons (AAOMS), PubMed, and Scopus. The search included literature on postoperative oral health management for orthognathic surgery patients, such as guidelines, clinical decision-making tools, expert consensus, evidence summaries, and systematic reviews, covering publications from database inception to November 12, 2024. Two researchers independently assessed the quality of the included literature and extracted, summarized, and synthesized the evidence.Results:A total of 18 studies were included, consisting of 7 guidelines, 7 systematic reviews, 2 expert consensus documents and 2 randomized controued trials. Twenty-two best evidence statements were summarized, addressing six key areas: oral hygiene and infection prevention, wound care, oral functional recovery, dietary and nutritional support, oral comfort management, and long-term oral health maintenance.Conclusions:This study provides a comprehensive summary of the best available evidence for postoperative oral health management in orthognathic surgery patients. It offers theoretical support for clinical nursing practices and evidence-based recommendations for postoperative care specific to this patient population.

Objective To evaluate the risk of occupational noise-induced hearing loss in workers in a metal tool manufacturing enterprise, and to carry out risk classification and risk management. Methods A total of 91 male noise-exposed workers from a metal tool manufacturing enterprise in Hebei Province were selected as the research subjects using the convenience sampling method. The work site survey on occupational health and the measurement on individual noise exposure level were carried out. The ISO 1999：2013 (E) Acoustics-Estimation of Noise-Induced Hearing Loss was used to predict the risk of high frequency hearing loss (HFHL) and occupational noise-induced deafness (ONID). The risk classification and risk management were conducted using the WS/T 754-2016 Guideline for Risk Management of Occupational Noise Hazard (hereinafter referred to as WS/T 754-2016). Results The individual noise exposure intensity of workers in the six work sites of the enterprise, including blade workers, sheet punching workers, roller forging workers (hoe), hole punching workers, roller forging workers(shovels), and carpenters, exceeded the national occupational exposure limit, with the maximum volume of 91.2-104.1 dB(A). Among these workers, the positions of blade workers, sheet punching workers, and roller forging workers (hoe) were identified as critical control points for noise hazards in the enterprise. The detection rates of HFHL and ONID were 24.2% and 8.8%, respectively. The risk prediction results showed that, based on the actual noise exposure time and age of the study subjects, the risk of HFHL and ONID ranged from 1.7%-48.8% and 0.0%-29.5%, respectively. The risks of HFHL caused solely by occupational noise exposure when working up to 50.0, 55.0, and 60.0 years of age were 11.4% to 64.7%, 16.4% to 65.1%, and 17.2% to 59.4%, respectively. The risks of ONID caused solely by occupational noise exposure were 0.0% to 45.5%, 4.2% to 51.7%, and 5.9% to 57.4%, respectively. Except for the blade workers, the predicted median of potential noise-induced permanent threshold shifts (NIPTS) in the other five positions were lower than the actual values of NIPTS, with the difference ranging from 3.0-28.3 dB, and 73.3% of them underestimated by 10.0 dB or more. Conclusion The outcome of noise exposure on the hearing of workers in this enterprise are severe. Risk management should be conducted according to the WS/T 755-2016.