Hekmatian 2011a.
| Methods | Study design: unclear if randomised or non‐RCT Country: Iran Setting: radiology department of the School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran Period of trial: not mentioned |
| Participants | Total number of participants (randomised?): 100 Age: not mentioned Gender: male = 31, female = 66 Inclusion criteria: patients admitted to the radiology department of the dentistry school; informed consent; no central or peripheral nervous system disorders or had any oral lesions; high co‐operation Exclusion criteria: people who suffered from any type of brain lesions; any oral lesions; learning disabilities |
| Interventions | Intervention: E angustifolia film (n = 50) Control: placebo film (n = 47) Intervention details: all patients were evaluated for gag reflex after 3 minutes of film in touch with the mucosa |
| Outcomes | Outcomes reported:
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| Notes | Funding source: not mentioned Sample size calculation: simple non‐probability sampling Adverse effects: not mentioned Attrition: 3 Trials registration: not registered Notes: email sent for additional information regarding randomisation and nature of participants on 25 November 2014; no reply received |