Table 2.

Infrared thermal measurements of the perioral region surface at the baseline during the mask wearing and after the device removal (mean, SD. Student’s t-test).

	Temperature Baseline		Temperature Inhalation		Temperature Exhalation		Temperature Mask Removal
Groups	N95	Surgical Mask	N95	Surgical Mask	N95	Surgical Mask	N95	Surgical Mask
Average (SD)	35.0 ± 2.8 °C	35.2 ± 3.1 °C	26.0 ± 3.6 °C	28.9 ± 3.1 °C	29.3° C ± 3.8	31.4° C ± 3.6	36.9 ± 4.2 °C	35.9 ± 3.4 °C
p-value	p > 0.05		p < 0.01		p < 0.01		p < 0.01