US 12,433,719 B2
Elastic orthodontic appliances, systems, and methods for use
Loc Phan, Santa Clara, CA (US); and Huong Dinh, San Jose, CA (US)
Assigned to Smylio Inc., Fremont, CA (US)
Filed by Smylio Inc., Fremont, CA (US)
Filed on Jul. 23, 2022, as Appl. No. 17/871,903.
Application 17/871,903 is a continuation in part of application No. 17/148,078, filed on Jan. 13, 2021, granted, now 11,744,675.
Application 17/148,078 is a continuation of application No. 16/775,202, filed on Jan. 28, 2020, granted, now 11,317,992, issued on May 3, 2022.
Claims priority of provisional application 62/797,797, filed on Jan. 28, 2019.
Prior Publication US 2022/0361985 A1, Nov. 17, 2022
Int. Cl. A61C 7/08 (2006.01)
CPC A61C 7/08 (2013.01) 22 Claims
OG exemplary drawing
 
1. An orthodontic appliance comprising:
a first shell adapted to receive patient teeth, wherein the first shell has a bottom first surface for engaging the teeth and a top second surface opposite the bottom first surface and a first edge defined therebetween;
a second shell shaped to be stacked over the first shell, wherein the second shell has a bottom second surface, a top second surface opposite the bottom second surface and a second edge defined therebetween; and
a first chamber defined between the top first surface of the first shell and the bottom second surface of the second shell, and a first perimeter seal formed between a portion of the top first surface of the first shell and the bottom second surface of the second shell; and
wherein the first chamber comprises at least one tack-free contact point between the first shell and the second shell within the first chamber, each contact point permitting movement between the first shell and the second shell.