RBR‐5dsrhv.

Study characteristics
Methods	Design: parallel Duration: 16 weeks Assessment: baseline and post‐intervention Country: Brazil
Participants	Pain condition: temporomandibular pain Population: women aged 18‐59 with chronic temporomandibular pain Minimum pain intensity: intensity of muscle pain ≥ 7 on a 0‐10 VAS Inclusion criteria Women between 18 and 59 with chronic temporomandibular pain Intensity of muscle pain ≥ 7 on a 0‐10 VAS Exclusion criteria Physical and mental health comorbidities Total participants randomised: 96 Age in years (mean): 35.9 Gender: 96/96 were female Pain duration in years (mean, SD): NR
Interventions	Waitlist n = 24 Participants kept on a waiting list for 4 months and instructed not to receive any other treatment for temporomandibular pain with telephone calls every 2 weeks Amitriptyline 10 mg n = 24 TCA Fixed dose Amitriptyline 10 mg + splint n = 24 Combined intervention: TCA + splint Amitriptyline = fixed dose Use of an occlusal plaque stabiliser without occlusal guide during sleep Acupuncture n = 24 Weekly acupuncture performed by acupuncturist dental surgeons, totaling 16 sessions, with needling time of 20 min
Outcomes	Pain intensity Mood Quality of life Sleep Withdrawal
Missing data methods	Completer‐only analysis
Funding source	Non‐pharmaceutical: thanks the CAPES scholarship for fund
Conflicts of interest	NR
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Participants were randomised by means of random numbers generated by computer
Allocation concealment (selection bias)	Low risk	The randomisation of patients in the 4 groups was carried out by means of opaque and sealed envelopes encoded by 'A', 'B', 'C' or 'D', prepared by a researcher without contact with the other procedures.
Blinding of participants and personnel (performance bias) All outcomes	High risk	It was not possible to blind the participants and the clinicians due to the nature of the interventions.
Blinding of outcome assessment (detection bias) All outcomes	High risk	Self‐reported outcomes from unblinded participants
Incomplete outcome data (attrition bias) All outcomes	High risk	Completer analysis only. Unequal attrition ‐ many more participants withdrew from the acupuncture group than the other groups. Attrition Total: 18/96 (18.75%) Waitlist: 3/24 (12.5%) Amitriptyline 10 mg: 3/24 (12.5%) Amitriptyline 10 mg + splint: 1/24 (4.2%) Acupuncture: 11/24 (45.8%)
Selective reporting (reporting bias)	Unclear risk	Trial was registered on the Brazilian Registry of Clinical Trials after completion.
Other bias	Unclear risk	Extracted from a doctoral thesis translated from Portuguese ‐ can't find published papers