Efficiency of upper arch expansion with the Invisalign system.

CONCLUSIONS: Aligners could increase the arch width, but expansion was achieved by tipping movement. The evaluation of initial position and preset of sufficient root-buccal torque of posterior teeth were necessary due to the lower efficiency of bodily buccal expansion by the Invisalign system.
PMID: 31368778 [PubMed - as supplied by publisher]

Source: The Angle Orthodontist - July 31, 2019 Category: Dentistry Authors: Zhou N, Guo J Tags: Angle Orthod Source Type: research