Table 1.

Mask/respirator usage of the participants in different dental procedures. * Fischer’s exact test

Mask/respirator type	Surgical mask	FFP1	FFP2/N95	FFP3/N99
Aerosol-generating procedures	282	23	189	61
Other procedures	448	23	71	34
p value *	pp<0.001	1.00	pp<0.001	0.004