Abstract: An apical irrigation fluid delivery apparatus comprising an applicator, a vacuum supply assembly and an irrigation fluid supply assembly. The applicator assembly includes a body with a vacuum applicator assembly and a tooth fluid directing assembly. The applicator is configured to irrigate a canal of a tooth through negative pressure by disposing an elongated vacuum tube within the canal, wherein the elongated vacuum tube can draw fluid from the fluid directing assembly through the canal. The applicator assembly includes both the fluid directing assembly and the vacuum supply assembly so as to allow for single handed irrigation of the canal of the root.