Measurement of intraosseous pressures generated by the wand, high-pressureperiodontal ligament syringe, and the stabident system

Intraosseous pressure generated by the use of three anesthetic systems-the Wand; a hand-operated high-pressure periodontal ligament (PDL) syringe; and the Stabident system-were studied in fresh mandibles of 14 large swine. Th e mandibles were drilled and tapped in one area of both the right and left posterior molar regions, Pressure gauges were attached via threaded fitting s, Pressures during injection were recorded for the Wand first, then the PD L syringe, and finally Stabident, Results showed averages of 8.3 mm Hg gene rated by the Wand, 16.3 mm Hg with the high-pressure PDL syringe, and 43.7 mm Hg from the Stabident system. Results were corroborated with data from t hree human cadaver mandibles.