Retrospective comparison of the George Gauge™ registration and the sibilant phoneme registration for constructing OSA oral appliances

Objective: To compare outcomes for appliances manufactured utilizing the George Gauge™ Registration (GGR) and the Sibilant Phoneme Registration (SPR). It was hypothesized that there would be no difference in outcomes.Methods: This study is a retrospective analysis of two groups. Each group consisted of 20 oral appliances manufactured utilizing the GGR and 20 utilizing the SPR.Results: For the two-site data, no difference in outcomes was demonstrated (p = .24). The SPR method required fewer calibrations (p = 5.6 × 10−3) and less jaw movement (p = 3.33 × 10−4). Both bite methods resulted in similarly variable post-AHI scores (p = .52). For the eight-site data, no difference in outcomes was demonstrated (p = .76). The SPR required less movement of the jaw (p = 4.52 × 10−5); however, outcome variance was larger for the SPR (p = .036).Conclusion: The study null hypothesis of no difference in outcomes was supported.