Determining the performance of a temperature sensor embedded into a mouthguard
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Leonardo de Almeida E Bueno1, William Milnthorpe1, Jeroen H M Bergmann2
1Natural Interaction Lab (NIL), Department of Engineering Science, University of Oxford, Thom Building, Parks Road, Oxford, OX1 3PJ, UK.
Objective:
This study aimed to determine the steady-state errors of oral-based temperature sensors, that are embedded in mouthguards, using a robust assessment process.
Materials And Methods:
Four electronic boards with temperature sensors were encapsulated in mouthguards made from ethylene-vinyl acetate (EVA). The error and time to reach steady-state temperature were determined using a thermostatic water bath during three different conditions (34, 38.5 and 43 °C). Subsequently, a case study of one volunteer wearing the instrumented mouthguard is presented.
Results:
The water bath tests showed that a mean absolute error of 0.2 °C was reached after a maximum of 690 s across all test conditions. The case study yielded an absolute error was 0.2 °C after 1110 s.
Conclusion:
These results show that an instrumented mouthguard with temperature sensing capabilities can yield a consistent steady-state error that is close to the clinical requirements across a range of temperatures. However, the time it takes to reach steady-state temperature needs to be considered for these systems to correctly interpret the outcomes.
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