When using an electric file, what is the most important safety measure for the practitioner?

When using an electric file, the most important safety measure for the practitioner is to wear a dust mask. This is crucial because electric filing generates dust from the nails and surrounding skin, which can be harmful if inhaled. The dust created during this process can contain fine particles that may irritate the respiratory system or cause long-term lung issues when inhaled regularly.

Using a dust mask helps to filter out these harmful particles, ensuring a safe environment for both the practitioner and their clients. While protective eyewear and ear protection are important in certain contexts, the immediate concern when using electric files is the inhalation of dust. An apron, on the other hand, primarily serves to protect clothing from spills and dust but does not address the respiratory hazards associated with electric filing. Thus, wearing a dust mask is a critical component of maintaining health and safety standards in a nail tech practice.