Curable radiopaque substance
AssigneeMerz Dental GmbH
InventorSebastian Pflesser
Life of this patent
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Abstract
A curable and radiopaque substance, a material that can be produced from same via polymerisation, a method for producing the curable substance and the cured material, and the use of the curable substance or the cured material are disclosed. The curable substance or the cured material can be used in, inter alia, orthopaedics as so-called bone cement, in particular as a tooth filling material, dental cement, dental lining material, flowable composite material (flow material) etc., as well as in diagnostic radiology. The invention also relates to the use of the curable substance generally as a construction material in an additive manufacturing process using a digital data model.
Claims30
(canceled)
The method of claim 31, wherein at least one of the polymerizable monomers is selected from the group consisting of free-radically curable monomers.
The method of claim 31, wherein the strontium, zirconium, lead, barium, bismuth or rare earth compound is a polymerizable strontium, zirconium, lead, barium, bismuth or rare earth compound and/or an inorganic or organic rare earth salt or a complex.
The method of claim 31, wherein the strontium, zirconium, lead, barium, bismuth or rare earth compound is present in a concentration which makes radiopacity possible.
The method of claim 31, wherein the curing initiator is a UV curing initiator.
The method of claim 31, wherein the curing initiator consists of a 2-component redox system and contains, as auxiliary, a pulverulent component which after mixing with the liquid component results in a self-curing substance.
The method of claim 31, wherein the UV initiator is selected from the group consisting of phosphine oxides, thioxanthones and camphorquinone,
The method of claim 31, wherein the UV initiator is selected from the group consisting of diphenyl(2,4,6-tiimethylbenzoyl)phosphine oxide (TPO), 2,4,6-trimethylbenzoylphenylphosphinate (TPO-L) and bis(2,4,6-tri-methylbenzoyl)phenylphosphine oxide (BAPO).
The method of claim 31, wherein the auxiliary is an organic acid.
The method of claim 31, wherein the organic acid is an organic carboxylic acid.
The method of claim 31, wherein the organic carboxylic acid is an aliphatic, aromatic and/or aralkyl carboxylic acid.
The method of claim 31, wherein the carboxylic acid is a substituted or unsubstituted, saturated and/or unsaturated branched and/or unsaturated carboxylic acid and/or a corresponding carboxylic acid derivative functionalized on the carboxyl moiety.
The method of claim 31, wherein the carboxylic acid derivative is phenylacetic acid and/or 3-phenylpropionic acid and/or trans-cinnamic acid.
The method of claim 31, wherein the auxiliary is a complex former which is capable of forming a complex with an ion of the rare earth metals.
The method of claim 31, wherein the complex former has at least one carbonyl function and/or at least one carboxyl function which is/are capable of forming a coordinate bond with an ion of the rare earth metals.
The method of claim 31, wherein the complex former has an acetylacetone moiety or an acetylacetonate moiety.
The method of claim 31, wherein the complex former has a polymerizable moiety.
The method of claim 31, wherein the polymerizable moiety is represented by at least a free-radically polymerizable group.
The method of claim 31, wherein the complex former is selected from the group consisting of 2-methacryloyloxyethyl acetoacetate (AAEMA), bis(2-methacryloyloxyethyl) pyromellitate, methacryloyloxyethyl phthalate, methacryloyloxyethyl maleate, methacryloyloxyethyl succinate and derivates thereof.
The method of claim 31, wherein the complex former at room temperature has a vapor pressure of less than 1 mbar/20° C.
24-25. (canceled)
The method of claim 31, wherein the curable mixture at room temperature has a vapor pressure of less than 1 mbar/20° C.
27-28. (canceled)
The method of claim 31, wherein the curable substance after polymerization gives a colorless or colored material which is transparent to electromagnetic waves in the range of visible light.
(canceled)
A method for producing a curable dental material, which comprises the following steps:
- (i) production or provision of starting materials comprising (a) one or more polymerization monomer(s), (b) one or more strontium, zirconium, lead, barium, bismuth or rare earth compound(s) which is/are soluble in the monomer or in the monomer mixture, (c) one or more curing initiator(s) and, (d) one or more auxiliaries,
- or
- production or provision of intermediates derived from the starting materials,
- (ii) mixing of the starting materials produced or provided as per step (i) or the intermediates produced or provided as per (i) so as to result in each case in the curable dental material.
32-41. (canceled)
Dependencies are inferred from the claim text.