IADR Abstract Archives
Design of Oral Appliance for Assessment and Recording of Genioglossus Muscle Activity in Sleep Apnea Patients
Objectives: The objectives of this thesis were to Design a dental appliance that can worn to hold the EMG electrodes in proximity to the Genioglossus muscle and record its neuromuscular activity. Test the fit and comfort of multiple appliance prototypes. Test the device's reliability in recording muscle activity in healthy and OSA patients through EMG.
Methods: Alginate impressions were taken for the lower arch, then scanned with a lab scanner and converted into digital impressions. ExoCad software was used to make the primary design of the appliance. Fusion 360 software was then used to modify the design and create tubes within the appliance to house the electrodes in a bilateral configuration. After the design was completed, a NextDent 3D printer was used to print the appliance using OrthoFlex resin. Electrodes made from Silver-Silver chloride were incorporated within the appliance through the created tubes to record the muscle activity. Ten known healthy individuals and ten individuals with a confirmed diagnosis of OSA were recruited. After the EMG was acquired, some signal processing features were extracted from the signals, and significant differences between the two groups were tested.
Results: The mean power and standard deviation were higher in the control group compared to the OSA group. However, the difference was not statistically significant except at the active state (p < 0.05). Regarding the wavelength during rest, both groups demonstrated similar results. However, during the activity, the control group had a significantly longer wavelength than the OSA group. Meanwhile, the mean frequency was larger in the OSA group (p < 0.05) during the rest state.
There was no statistically significant difference between the OSA and the control groups at rest or during activity regarding zero crossing, slope change account, and entropy.
Conclusions: These results mean that the device can be used to record the EMG features of the GG muscle and use them to differentiate between healthy individuals and OSA-positive patients. Future research should focus on developing the device to be more friendly and easily used at home, with fewer components needed to fulfill the desired use.
Methods: Alginate impressions were taken for the lower arch, then scanned with a lab scanner and converted into digital impressions. ExoCad software was used to make the primary design of the appliance. Fusion 360 software was then used to modify the design and create tubes within the appliance to house the electrodes in a bilateral configuration. After the design was completed, a NextDent 3D printer was used to print the appliance using OrthoFlex resin. Electrodes made from Silver-Silver chloride were incorporated within the appliance through the created tubes to record the muscle activity. Ten known healthy individuals and ten individuals with a confirmed diagnosis of OSA were recruited. After the EMG was acquired, some signal processing features were extracted from the signals, and significant differences between the two groups were tested.
Results: The mean power and standard deviation were higher in the control group compared to the OSA group. However, the difference was not statistically significant except at the active state (p < 0.05). Regarding the wavelength during rest, both groups demonstrated similar results. However, during the activity, the control group had a significantly longer wavelength than the OSA group. Meanwhile, the mean frequency was larger in the OSA group (p < 0.05) during the rest state.
There was no statistically significant difference between the OSA and the control groups at rest or during activity regarding zero crossing, slope change account, and entropy.
Conclusions: These results mean that the device can be used to record the EMG features of the GG muscle and use them to differentiate between healthy individuals and OSA-positive patients. Future research should focus on developing the device to be more friendly and easily used at home, with fewer components needed to fulfill the desired use.
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