Referring to the Cochrane system evaluation manual, according to the flow chart of PRISMA, and according to the inclusion and exclusion criteria of the design scheme, the 2 researchers used EndNote X7 software to independently screen and extract data from the retrieval literature. If there is a dispute over the inclusion of the study, the 2 parties shall negotiate with each other or be decided by a third researcher. The 2 researchers used a data information extraction table designed in advance to extract the research content, including 1 basic data: title, publication date, journal, author, 2 research characteristics: number of cases, general demographic characteristics, intervention measures, follow-up, adverse events, etc. 3Indexes of outcome: effective rate, VAS, dysfunction index (DI), muscle tenderness index (PI), temporomandibular joint index (CMI), maximum mouth opening (MMO), incidence of adverse reactions. The screening process is shown in Figure .
Flow diagram.
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