Various appliance systems have evolved in the field of orthodontics,which claimed it’s own advantages with inherent disadvantages.Few appliance systems emerged as a variant of the existing appliance systems.
Few emerged as a result of combination of two appliance systems.
One example for such a appliance system is TIP_EDGE.
E.H Angle ,father of orthodontics, introduced edgewise brackets in the year of 1925. The major disadvantage of edgewise brackets was ,it had no provisions to facilitate the closing of spaces in the posterior segments.
His best suggestion to tip crowns distally was the use of second order bends in the archwire.