Aligner modeling

– Midline misalignment: tactics

– Movement limitation when using aligners:

- inclination - angulation

- rotation

- torque

- distalization - mezialization

- intrusion - extrusion.

– "Screwdriver" effect 

– Management of different attachments:

- The best positioning on the tooth 

- Different shapes for different movements.

– Prevention of the wrong effect 

– Transfer tray for attachments

– Calculating the number of aligners

– Model set comparison: control of the changing.