Local (regional) anesthesia aimed at inferior alveolar nerve was administered in 284 patients by the direct Halsteadt method for the extraction of semi-retained and retained lower wisdom teeth. Artikain or meprivakain were used for this purpose.The average amount of the required anesthetic was 2.84ml.The study has shown that in vertical position of semi-retained teeth, one dose of the anesthetic is usually sufficient. In other cases it is necessary to expect administration of two doses, rarely even more than that.

        Key words: dens molaris tertius - anesthesia - nervus alveolaris inferior – semi-retained and retained lower teeth