Models for aligners
Full-arch orthodontic model play an integral role in clear aligner therapy. Sequential models can be printed and used to thermoform clear aligners. In addition, complete orthodontic model can be used in conjunction with spray separators and laser soldering to fabricate orthodontic appliances.
As ALigners applies “Push-type ” of force only, Rotation and Extrusion forces are considered as a difficult movement to treat. Hence, Open-Bite Corrections were considered as difficult to treat with Aligners. Attachments are playing an important role In this case. Extrusion attachments are planned on Central Incisors (as small as 2 mm- same as Align’s optimized extrusion attachment). With Lateral, we use Dr. Jonathan Nicozisis’s “sash” attachment, which are multi planner beveled attachments designed to aid with rotation as well as Extrusion correction by fully engaging the maximum tooth surface of these small-sized teeth which usually gets slipped off and failed to track the movements. we planned HBA (Horizontal Bevelled Attachments) on Molars to aid in retentions.
One Of the complicated cases to treat with Aligners is Distalization. Here, we planned sequential Distalization with posterior teeth to achieve Predictable results/outcomes. We planned Multiplanner Jumbo G6 /OAA(Optimized Anchorage attachments) which is proved to be a success to treat such retraction Cases. Considering the amount of Deepbite, we planned Bite ramps to facilitate Lower incisors intrusions. These bite ramps are repositioned in 2-stage considering the occlusal relationships of anterior teeth.
The Treating clinician was willing to treat only social 6 teeth correction. The overjet reduction is planned with a Interproximal Stripping /IPR. Multiplanar SASH attachments are planned over upper laterals to aid in extrusion and rotation corrections. Also, palatal attachments planned on Upper incisors to facilitate palatal root Torque/Labial Crown Torque corrections. This palatal attachments will also serve as an bite ramps for deep bite correction.