Table 3 The critical features of the advanced technology of the EPG system

Safety

The materials used in developing advanced EPG is nontoxic and biodegradable. The materials used for the artificial palate are acrylic resin, silver electrodes, and copper wire. Acrylic resin has been approved by the FDA and is widely used in dental applications such as retainer and denture. In addition, silver electrode and copper wire are also widely used as sensors in a medical application such as EEG and EMG. Besides, the electronic component used in the development of new EPG must prevent electric shock

User friendly

During data recording, the multiplexer is hanging around the subject's neck, and the subject cannot move freely. The design of new EPG is more friendly to the environment and the user. The use of Bluetooth technology may avoid the need of the patient from being bogged down by the wires, and the patient can record continuous speech patterns in a very comfortable condition. The other advantage of the new EPG is saving the workspace area compared to the previous EPG, which needs a large workspace to place a personal computer, sound system, microphone, and main unit of the EPG. The new technology EPG is a portable unit, and reasonably small space is needed during the recording

Cost-effectiveness

Hardcastle et al. [18] in their study stated that the average time in the process of manufacturing the Reading palate started from dispatch of plaster impression to the delivery of the Reading palate was estimated as 8 days per palate. It may affect the labour cost and time. The new EPG may reduce the manufacturing cost and time by reducing the manufacturing process and materials used