Dental hygienists in Poland work in various settings, including public health care institutions, private dental practices, dental clinics, kindergartens, and schools. They can often face medical emergencies, whose rate is increasing owing to comorbidities and aging of dental patients' populations. The aim of the study was to assess the prevalence of medical emergencies in dental hygienists' practice in Poland and the hygienists' preparedness and attitudes toward emergencies.A 10-question authors' own questionnaire was filled in by 613 dental hygienist. It referred to their cardiopulmonary resuscitation training, availability of emergency medical equipment in the workplace, the prevalence of medical emergencies including the need for an emergency medical service (EMS) call, and the management of cardiac arrest.Overall, 613 dental hygienists working in Poland participated in the study; 38.99% had taken part in basic life support (BLS) training within the previous 12 months and 35.89% within 2 to 5 years; 15.17% had experienced at least 1 emergency situation requiring an EMS call within the previous 12 months. Vasovagal syncope was the most common medical emergency (15.97%), followed by moderate anaphylactic reaction (13.87%), seizures (8.81%), hyperventilation crisis (7.50%), and hypoglycemia (7.34%).The most common medical emergency in dental hygienists' practice in Poland is syncope followed by mild anaphylactic reaction. Most of the dental hygienist had participated in a BLS course within the previous 5 years; however, 20% of them have never participated since graduation. Dental hygienists should participate in BLS courses every 2 years to keep the cardiopulmonary resuscitation skills and stay up-to-date with current guidelines. An important part of the study participants declare the lack of availability in their workplaces of life-saving equipment, including self-expanding bag resuscitator, oropharyngeal, and supraglottic airway device and oxygen source. Medical emergency equipment as recommended in the international guidelines should be available in every practice.