Question

Friction vs frictionless mechanics in orthodontics

Answer 1

Explanation:

Friction mechanics were superior to frictionless mechanics in terms of rotational control and dimensional maintenance of the arch (P <. 0001); frictionless mechanics were shown to be more effective at reducing tipping and extrusion (P <. 0001).

Answer 2

Answer:

Space closure can be done either by Friction or Frictionless mechanics. In Friction or sliding mechanics; the space site is closed by means of coil springs or elastics allowing the brackets to slide on the orthodontic archwire.