What is the bi-directional insertion technique and why should I use it for the
Mandibular Block Injection?

With a traditional dental syringe, missed blocks are usually due to needle deflection.
During a traditional injection, the static needle bevel orientation forces the
needle to deflect as the needle is inserted. Holding the Wand like a pen, allows
the user to roll the hand-piece between their thumb and forefinger creating an
axial-rotation. This continual rotation of the needle bevel prevents needle
deflection. This technique is called the Bi-rotational insertion technique.

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