Multi-layered dental appliance
US12390308B2 · kind B2 · utility
0Cited by
18References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2019 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Jun 24, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2535/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A dental appliance for positioning a patient's teeth includes a polymeric shell with a plurality of cavities for receiving one or more teeth. The polymeric shell includes at least 3 alternating polymeric layers AB, wherein layer A includes a thermoplastic polymer A, layer B includes a thermoplastic polymer B, and the thermoplastic polymer B is different from the thermoplastic polymer A. Each of the thermoplastic polymers A and B have a flexural modulus of about 1.0 GPa to about 4.0 GPa; and each of the thermoplastic polymers A and B have a glass transition temperature (Tg) greater than about 40° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.