A deficiency of clotting factor VIII or IX in haemophiliac patients makes excessive or prolonged bleeding a primary problem. They may lead to complications such as temporomandibular joint hemartrosis or a haematomas formation. Blood extravasation may occur in life‑threatening‑prone areas such as the pterygoid plexus or the oropharyngeal area. For this reason, the treatment of a patient with haemophilia should demand a multidisciplinary approach, whereby the dentist, while performing procedures, must be particularly careful not to irritate the patient’s soft tissues. In dentistry, there are safe procedures for patients with bleeding disorders. These include, among others, endodontic treatment, during which the working length should be observed, and should apply infiltration anaesthesia on the buccal site. Some activities, such as tooth extraction, may require supplementing the missing clotting agent, in consultation with a haematologist, and additional wound dressing due to the fact that sometimes bleeding occurs several hours or days after tooth extraction.

Key words: haematoma, haemophilia, infiltration anaesthesia, tooth extraction, dental treatment.