The X-tip system consists of two parts: a drill and a guide sleeve component . The drill has a special hollow needle which leads the guide sleeve through the cortical plate, where it is separated and withdrawn. The remaining guide sleeve is designed to accept a 27-gauge needle to inject the anesthetic solution. The guide sleeve is removed after the IO injection is complete.
Stabident system is composed of a perforator driven by a slow-speed handpiece and a solid 27-gauge wire with a beveled end that, when activated, drills a small hole through the cortical plate . The anesthetic solution is delivered to cancellous bone through the 27-gauge ultra-short injector needle placed in the hole made by the perforator.
REF:JADA,2003,134,11
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