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- For Pain Patients and Professionals
To conduct a systematic review on the use of hypnosis in the treatment of orofacial pain. The search was performed on February 2021 and updated in July 2024 in the following databases: MEDLINE via PUBMED, Virtual Health Library (VHL), Web of Science, Cochrane Library, Embase, Clinical Trials, ISRCTN Registry, Psycinfo, Open Grey, Google Scholar, and Brazilian Digital Library of Theses and Dissertations (BDTD). The descriptors referring to Orofacial Pain and hypnosis were used to select clinical trials on the use of hypnosis in the treatment of Orofacial Pain, in English, Spanish, Portuguese, French, and Italian, without restriction on date and place of publication. In a first stage, two independent, trained, and calibrated reviewers classified the abstracts and then the full texts. The data were extracted, and the risk of bias was assessed using the Cochrane RoB 2.0 tool. Of the 642 references identified, 6 studies-published between 1986 and 2010-were included in the review, with 232 patients reported. Hypnosis was mainly used in cases of chronic pain associated with temporomandibular disorders (TMDs), compared with relaxation sessions, acupuncture, occlusal splint, minimal treatment, or no interference. Hypnotherapy was applied in different ways, either exclusively by professionals or by means of self-hypnosis in a complementary or exclusive manner. All studies showed statistical significance for the effect of the intervention (hypnotherapy). The overall RoB2 consisted of three studies with high risk of bias and three studies with some concern. Although there were clinical studies on the subject and they had methodological flaws, hypnotherapy (induction and/or self-hypnosis) appears to be a promising strategy for the treatment of orofacial pain, especially TMDs. There is, therefore, a need for new randomized clinical studies with adequate methodological standards to confirm the findings.