| 摘要 |
The invention relates to an invisible removable orthodontic repositioning appliance with a lower modulus inner lining for systematically aligning tee th from an initial tooth arrangement to a final tooth arrangement while mini mizing propensity for root and bone resorption due to the lower modulus. The aligning of the teeth may be accomplished by taking impressions at various intervals for greater accuracy in the event of a distorted impression. Patie nt impression and/or model may then be digitally scanned. Using 3D software, tooth position may be incrementally modified toward idealized position and associated stress analyzed. Final modified model and associated appliance ma y be fabricated with for orthodontic movement using 3D printer. Each applian ce may be numerically identified to maintain uniformity of application from start of , treatment to completion. The forces required for the alignment ma y be from polymeric material used to fabricate the orthodontic appliances, t he shape memory alloy, and/or micro-implants with various attachments, inclu ding magnetic attachments to allow for three potential types of cooperating forces toward optimal tooth movement.
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