Can a better rinse reach the root's tip? a tooth study puts three irrigation methods to the test.

This trial compares three root canal irrigation methods—conventional needle, side-vented needle, and ultrasonic activation—to see which one best delivers cleaning fluid to the very tip of the root. Using extracted single-rooted premolars, researchers will measure how far a dye-mixed solution penetrates into the narrow apical third of the canal. The goal is to identify the most effective technique for reaching hard-to-clean areas that standard irrigation often misses.