US 12,433,718 B2
Stress relaxation resistant orthodontic appliances
Loc Phan, Santa Clara, CA (US)
Assigned to SMYLIO INC., Fremont, CA (US)
Appl. No. 17/621,155
Filed by Smylio Inc., Fremont, CA (US)
PCT Filed Jun. 19, 2020, PCT No. PCT/US2020/038833
§ 371(c)(1), (2) Date Dec. 20, 2021,
PCT Pub. No. WO2020/257725, PCT Pub. Date Dec. 24, 2020.
Claims priority of provisional application 62/863,868, filed on Jun. 19, 2019.
Prior Publication US 2022/0354622 A1, Nov. 10, 2022
Int. Cl. A61C 7/08 (2006.01); A61C 13/34 (2006.01); B29C 51/00 (2006.01); B29C 51/30 (2006.01); B29L 31/00 (2006.01)
CPC A61C 7/08 (2013.01) [A61C 13/34 (2013.01); B29C 51/002 (2013.01); A61C 2201/00 (2013.01); B29C 51/30 (2013.01); B29L 2031/753 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An orthodontic appliance comprising:
a shell shaped to receive and reposition teeth, wherein the shell comprises an interpenetrating polymer network (IPN) material formed from multiple cross-linked polymers,
wherein a plasticizing solvent is configured to leak out of the IPN material over 1-3 days so as to gradually strengthen and reduce flexibility of the shell of the orthodontic appliance over the 1-3 days.