The new Septoject Evolution Needle features an innovative, patented scalpel-designed bevel. It is engineered for smoother penetration with less tissue displacement. Research shows that the Evolution needle requires 29% less force than standard needles to penetrate tissue. This means less discomfort for patients, even when used for multiple injections. The need for less force combined with significantly reduced deflection, offers dentists better control and accuracy. Septoject Evolution. Greater control, reduced discomfort.