Objective Osteoradionecrosis is a serious complication of radiotherapy for head and neck cancer, which not only leads to severe decrease of life quality of head and neck cancer survivors but also increases the economic burden of patients. Currently, there are no specific guidelines for the prevention and management of osteoradionecrosis worldwide. In this study, we summarized the best evidence of these problems in order to provide reference for clinical practice.
Methods Systematic retrieval from the inception of the database to June 18, 2020 of CNKI, VIP, Wanfang, CBM, PubMed, Web Of Science, Cochrane Library, CINAHL, guideline databases both in domestic and abroad as well as official website of relevant professional institutes was conducted to acquire relevant evidence, including guidelines, expert consensus and systematic review. Appropriate tools of quality evaluation were used to access the included literature and the best evidences for the prevention and management of osteonecrosis were summed up.
Results Finally, among the 11 literatures included, 6 are guidelines, 3 are expert consensus and 2 are systematic reviews. In general, The quality of methodology of the included literatures are relatively high. Researchers summarized the risk factor of osteoradionecrosis (including patient factors, tumor factors and treatment factors), the prevention of ORN before radiotherapy (including surgical prevention, the education of oral hygiene and dental examination and treatment), during radiotherapy (including oral and dental monitoring, precautions of radiotherapy) and after radiotherapy (including maintenance of oral and dental surveillance, the prevention of caries and periodontal diseases and considerations of tooth extraction after radiotherapy). The management of ORN was also summarized, which including imaging examination, conservative and surgical treatment as well as the efficacy evaluation of treatment of mandibular osteoradionecrosis. For the controversial treatment of hyperbaric oxygen, the available evidence does not recommend the use of hyperbaric oxygen alone or routinely.
Conclusions In this study, we summarized the best current evidences about the prevention and management of osteoradionecrosis. The importance of oral hygiene education, oral and dental surveillance, positive prevention and treatment of dental caries and periodontal disease was emphasized. Intensity modulated radiotherapy (IMRT) is recommended to reduce the radiation dose in the field. The treatment of ORN mainly includes conservative treatment and surgical treatment. However, these evidences still have some limitations so that medical workers should take the specific situation into consideration in the clinical application.
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