Abstract: A computer-implemented method and an electronic system for determining a measure of the physiological strain on a mammal due to heat are disclosed, wherein a number of steps are performed: receiving (S13) a measurement of a core body temperature (CBT) and a skin temperature (ST) of the mammal; calculating (S14) a mean body temperature 5 (MBT) as a function of the core body temperature (CBT) and the skin temperature (ST); and calculating (S15) a heat strain index (HSI) as a function of the mean body temperature (MBT), the heat strain index (HSI) indicative of the physiological strain on the mammal due to heat.

Abstract: An angled-head rotary cleaning device for dental purposes includes a plastic housing having an elongated neck portion that defines a sleeve with a wall. The neck portion includes a first end and a second end. The plastic housing has a head portion coupled to the first end of the neck portion and angled relative to the neck portion. The cleaning device also includes an elongated light guiding element having a light entry portion to receive light, and a light exit portion to emit light. At least a portion of the light guiding element is accommodated within the wall of the neck portion.