Objective: To compare the estimated effects of conservative surgery to those of a mandibular advancement splint (MAS) in the treatment of habitual snoring.
Method: Prospective, observational, non-randomized cohort study.
Results: Adequate follow-up data were available for 88 participants (23 following coblation, 65 after provision of an MAS). The mean reduction in snoring symptoms inventory (SSI) score for the 23 subjects undergoing coblation was 9.83 (± standard deviation 11.43). Reported pain duration was greatest with uvula amputation, but uvula coblation did not always adequately reduce its bulk. Of the 65 MAS patients, 39 (60 per cent) used the device regularly, with a mean fall in SSI of 12 (±16.4, p = 0.001). Approximately one in four patients in both groups achieved a significant fall in SSI (>15 points), and the measured effect sizes were close to 0.75 for both treatments.
Conclusions: Mandibular advancement splints and coblation have similar efficacies. However, their efficacy does not match that of radical surgery.