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US 2006/0154195 A1Published application
Shape memory polymer orthodontic appliances, and methods of making and using the same
OwnerPatrick Mather, Charles Burstone +1inventors
InventorsPatrick Mather, Charles Burstone, Changdeng Liu
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Abstract
Described are fixed and removable orthodontic appliances and components thereof fabricated from shape memory polymer compositions. The preparation and use of such appliances are also disclosed.
Claims21
An orthodontic appliance or a component thereof, comprising:
- a shape memory polymer selected from the group consisting of
- i) a castable shape memory polymer prepared by reacting A) a high-Tg polymer-forming monomer, B) a low-Tg polymer-forming monomer, and C) a multifunctional cross-linking agent;
- ii) a crosslinked polycyclooctene;
- iii) a thermoplastic blend shape memory polymer characterized by a Tg exceeding room temperature whose rubber modulus and elasticity are derived substantially from physical crosslinks wherein the shape memory polymer comprises a blend of a crystalline polymer selected from the group consisting of poly(vinylidene fluoride), polyglycolides, polylactide and copolymers thereof, poly(hydroxybutyrate), poly(ethylene glycol), polyethylene, polyethylene-co-vinyl acetate, poly(vinyl chloride), poly(vinylidene chloride) and copolymers of poly vinylidene chloride and poly vinyl chloride with an amorphous polymer selected from the group consisting of poly(vinyl acetate), poly methyl acrylate, poly ethyl acrylate, atactic poly methyl methacrylate, isotactic poly methyl methacrylate and syndiotactic poly methyl methacrylate;
- iv) a polyurethane shape memory polymer prepared by reacting (A) a polyol, (B) a chain extender dihydroxyl-terminated polyhedral silsesquioxane and (C) a diisocyanate;
- and
- v) crosslinked liquid crystalline polymers;
- and wherein the orthodontic appliance is not a removable aligner appliance.
5 more elements
An orthodontic appliance, wherein the appliance is a removable aligner appliance, comprising:
- a shape memory polymer having a Tg greater than or equal to about 40° C., wherein the shape memory polymer is
- a castable shape memory polymer prepared by reacting i) a high-Tg polymer-forming monomer, ii) a low-Tg polymer-forming monomer, and iii) a multifunctional cross-linking agent;
- or
- a thermoplastic blend shape memory polymer characterized by a Tg exceeding room temperature whose rubber modulus and elasticity are derived substantially from physical crosslinks wherein the shape memory polymer comprises a blend of a crystalline polymer selected from the group consisting of poly(vinylidene fluoride), polyglycolides, polylactide and copolymers thereof, poly(hydroxybutyrate), poly(ethylene glycol), polyethylene, polyethylene-co-vinyl acetate, poly(vinyl chloride), poly(vinylidene chloride) and copolymers of poly vinylidene chloride and poly vinyl chloride with an amorphous polymer selected from the group consisting of poly(vinyl acetate), poly methyl acrylate, poly ethyl acrylate, atactic poly methyl methacrylate, isotactic poly methyl methacrylate and syndiotactic poly methyl methacrylate.
1 more element
Dependencies are inferred from the claim text.