Intraosseous anesthesia techniques have existed since 1906, evolved in 1997 thanks to Dr Alain VILLETTE, and were perfected in 2007 by Dr Eric Pasquier.The Intraosseous protocol is made up of 3 steps, after initially delivering an anesthesia in the attached gingival tissues (periosteum), a perforation is performed, via the septum, towards the apices. The bone is not innervated, the perforation is therefore completely painless. Once the needle has penetrated to 3/4 of its length, the injection can be delivered in the highly vascularized cancellous bone close to the apices. One can deliver a complete cartridge of anesthetic with highly concentrated vasoconstrictor, without any risk of ischemia / necrosis. The anesthesia is immediate (proximity to the apices) and without the risk of failures (in the center of the cancellous bone, close to the apices). The solution diffuses in the bone, anesthetizing up to 8 teeth depending on the volume injected, and eliminates collateral numbness.