RMH3 Dental Luer-Lock Endo Irrigation Syringes — 100/Bag · 3cc

• Irrigation Needles — The tip that goes down the canal; its opening decides where the fluid goes. A closed-ended needle keeps the pressure at the tip low, which reduces the risk of solution being pushed past the end of the root.
• Syringes & Tips — The barrel that holds the solution, not the tip that enters the canal.
• Irrigating Devices — Adds movement to the solution, where a syringe and needle only deliver it.
• Irrigation Solutions — The chemistry itself: one solution works on the organic tissue, the other on the inorganic part.

Tip design: the review of flow models calls side-vented needles the most balanced of the configurations it compared, and says open-ended designs warrant cautious application.

Canal size: smaller apical preparations and narrow tapers went with higher wall shear stress, larger preparations with lower stress and smoother flow.

Strength of solution: one review reports that sequences using 5 percent hypochlorite with 17 percent EDTA took more calcium and phosphorus out of dentine than 3 percent hypochlorite with 8 percent EDTA. Every irrigation sequence studied had some damaging effect on dentine, including lower flexural strength and microhardness.