Provisional crown-and-bridge resin containing tetrahydrofuryl methacrylate

Claim 2

A provisional crown-and-bridge resin comprising: a liquid resin component and a powder component, said liquid resin component containing tetrahydrofurfuryl methacrylate as a major ingredient and being free from methyl methacrylate and also containing an anti-oxidant and an accelerator, said powder component containing poly (ethyl methacrylate) as a major ingredient and a curing agent for the resin component, said powder being mixed with said resin shortly before application at a ratio of about two to about five parts of powder to one part of liquid resin by weight, to give a suitably flowing mixture.

Claim 3

The provisional crown-and-bridge resin of claim 1, wherein said resin component also contains ethyl methacrylate as a major ingredient.

Claim 4

The provisional crown-and-bridge resin of claim 2 wherein said resin component also contains ethoxylated bisphenol A dimethacrylate as a major component.

Claim 5

The provisional crown-and-bridge resin of claim 1 wherein said powder includes a substantial proportion of amorphous silica.

Claim 6

The provisional crown-and-bridge resin of claim 1 wherein said powder incorporates a substantial amount of X-ray opaque barium glass.

Claim 7

A provisional crown-and-bridge resin comprising: a liquid resin component, containing as its major ingredients ethyl methacrylate and tetrahydrofurfuryl methacrylate and, as minor ingredients, an anti-oxidant and a cure accelerator, and, a powder component, containing as its major ingredients poly (ethyl methacrylate) and X-ray opaque filler and, as a minor ingredient, a curing agent for said liquid resin component, said resin and powder components being mixed to a desired consistency with the powder present in amounts by weight from about two to about five times the amount by weight of the resin.

Claim 8

A provisional crown-and-bridge resin comprising: a liquid resin component, containing as its major ingredients ethyl methacrylate and tetrahydrofurfuryl methacrylate and, as minor ingredients, an anti-oxidant and a cure accelerator, and, a powder component, containing as its major ingredients poly (ethyl methacrylate) and X-ray opaque filler and, as a minor ingredient, a curing agent for said liquid resin component, said resin and powder components being mixed to a desired consistency with the powder present in amounts by weight from about two to about five times the amount by weight of the resin.

Claim 9

The resin of claim 6 having, as a minor ingredient of the liquid resin component, an ultra-violet-light absorbing material.

Claim 10

A provisional crown-and-bridge resin comprising an intimate mixture of: a liquid resin component containing as its major ingredient a blend of ethyl methacrylate, tetrahydrofurfuryl methacrylate, and ethoxylated bisphenol A dimethacrylate, and, as minor ingredients an anti-oxidant and a cure accelerator, and a powder component having as its principal ingredient poly (ethyl methacrylate) and, as a minor ingredient, a curing agent for the liquid resin component, the powder component being present in an amount of about two to about five times as much, by weight, as the liquid resin component.

Claim 11

A provisional crown-and-bridge resin comprising an intimate mixture of: a liquid resin component containing as its major ingredient a blend of ethyl methacrylate, tetrahydrofurfuryl methacrylate, and ethoxylated bisphenol A dimethacrylate, and, as minor ingredients an anti-oxidant and a cure accelerator, and a powder component having as its principal ingredient poly (ethyl methacrylate) and, as a minor ingredient, a curing agent for the liquid resin component, the powder component being present in an amount of about two to about five times as much, by weight, as the liquid resin component.

Claim 12

The provisional crown-and-bridge resin of claim 8 wherein the powder component also includes a substantial amount of barium glass.

Claim 13

The provisional crown-and-bridge resin of claim 8 wherein the powder compound also includes a substantial amount of amorphous silica.

Claim 14

The provisional crown-and-bridge resin of claim 8 wherein said liquid resin compound also includes an ultra-violet-light absorbing agent.

Claim 15

A provisional crown-and-bridge resin consisting essentially of a liquid resin component and a powder component mixed to a desired consistency, said liquid resin consisting essentially of: ______________________________________ Ingredient Parts by weight ______________________________________ Ethyl methacrylate 0-70.0 Ethoxylated bisphenol A dimethacrylate 40.0 Tetrahydrofurfuryl methacrylate 60.0 Anti-oxidant sufficient to prevent oxida- tion Cure accelerator as desired ______________________________________ said powder component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Poly (ethyl methacrylate) 39-100 Amorphous silica 0-39 Curing agent enough to cure the curable resin in liquid resin component ______________________________________

Claim 16

A provisional crown-and-bridge resin consisting essentially of a liquid resin component and a powder component mixed to a desired consistency, said liquid resin consisting essentially of: ______________________________________ Ingredient Parts by weight ______________________________________ Ethyl methacrylate 0-70.0 Ethoxylated bisphenol A dimethacrylate 40.0 Tetrahydrofurfuryl methacrylate 60.0 Anti-oxidant sufficient to prevent oxida- tion Cure accelerator as desired ______________________________________ said powder component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Poly (ethyl methacrylate) 39-100 Amorphous silica 0-39 Curing agent enough to cure the curable resin in liquid resin component ______________________________________

Claim 17

The provisional crown-and-bridge resin of claim 12 wherein said anti-oxidant is chosen for the group consisting of: ______________________________________ Ingredient Parts by Weight ______________________________________ Butylated hydroxytoluene 0.01 to 1.0 Hydroquinone 0.1 to 2.5 Methyl ether of hydroquinone 0.1 to 5.0 ______________________________________

Claim 18

The provisional crown-and-bridge resin of claim 12 wherein the cure accelerator is chosen for the group consisting of: ______________________________________ Ingredient Parts by Weight ______________________________________ 2-hydroxyethyl-p-toluidine 0.3 to 1.94 N,N-3,5-tetramethylaniline 0.15 to .97 N,N-dimethyl-p-toluidine 0.07 to .97 ______________________________________

Claim 19

The provisional crown-and-bridge resin of claim 12 wherein the curing agent is benzoyl peroxide at quantities from about 0.17% to about 5%, the amount increasing with decrease in the amount of tertiary amine in the liquid resin.

Claim 20

The provisional crown-and-bridge resin of claim 12 containing an effective amount of ultra-violet-light absorbing agent.

Claim 21

The provisional crown-and-bridge resin of claim 16 wherein said absorbing agent is 2-hydroxy-4-methoxybenzophenone, up to 2.0 parts by weight.

Claim 22

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Tetrahydrofurfuryl methacrylate 60 Ethoxylated bisphenol A dimethacrylate 40 Butylated hydroxytoluene 0.1 2-hydroxy-4-methoxybenzophenone 2.0 2-hydroxyethyl-p-toluidine 2.0 ______________________________________ and a powder component consisting essentially of poly (ethyl methacrylate) with 1.5% benzoyl peroxide, the powder-to-resin ratio being about 3.5:1.0.

Claim 23

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Tetrahydrofurfuryl methacrylate 60 Ethoxylated bisphenol A dimethacrylate 40 Butylated hydroxytoluene 0.1 2-hydroxy-4-methoxybenzophenone 2.0 2-hydroxyethyl-p-toluidine 2.0 ______________________________________ and a powder component consisting essentially of poly (ethyl methacrylate) with 1.5% benzoyl peroxide, the powder-to-resin ratio being about 3.5:1.0.

Claim 24

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Tetrahydrofurfuryl methacrylate 60 Ethoxylated bisphenol A dimethacrylate 40 Butylated hydroxytoluene 0.1 2-hydroxy-p-toluidine 1.0 2-hydroxy-4-methoxybenzophenone 2.0 ______________________________________ and a powder component consisting essentially of poly (ethyl methacrylate) with 1.5% benzoyl peroxide, the powder-to-resin ratio being about 3.5:1.0.

Claim 25

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Tetrahydrofurfuryl methacrylate 60 Ethoxylated bisphenol A dimethacrylate 40 Butylated hydroxytoluene 0.1 2-hydroxy-p-toluidine 1.0 2-hydroxy-4-methoxybenzophenone 2.0 ______________________________________ and a powder component consisting essentially of poly (ethyl methacrylate) with 1.5% benzoyl peroxide, the powder-to-resin ratio being about 3.5:1.0.

Claim 26

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Tetrahydrofurfuryl methacrylate 60 Ethyl methacrylate 40 Butylated hydroxytoluene 0.1 2-hydroxy-4-methoxybenzophenone 2.0 2-hydroxyethyl-p-toluidine 1.0 and a powder component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Poly (ethyl methacrylate) with 1.5% benzoyl peroxide 50 a 90 to 10 mixture of poly (ethyl methacrylate) and poly (methyl methacrylate) without added benzoyl peroxide 50, the powder-to-resin ratio being about 3.5:1.0. ______________________________________

Claim 27

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Tetrahydrofurfuryl methacrylate 60 Ethyl methacrylate 40 Butylated hydroxytoluene 0.1 2-hydroxy-4-methoxybenzophenone 2.0 2-hydroxyethyl-p-toluidine 1.0 and a powder component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Poly (ethyl methacrylate) with 1.5% benzoyl peroxide 50 a 90 to 10 mixture of poly (ethyl methacrylate) and poly (methyl methacrylate) without added benzoyl peroxide 50, the powder-to-resin ratio being about 3.5:1.0. ______________________________________

Claim 28

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Tetrahydrofurfuryl methacrylate 40 Ethyl methacrylate 60 2-hydroxyethyl-p-toluidine 0.5 and a powder component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Poly (ethyl methacrylate) with 1.5% benzoyl peroxide 50 a 90 to 10 mixture of poly (ethyl methacrylate) and poly (methyl methacrylate) without added benzoyl peroxide 50, ______________________________________ the powder-to-resin ratio being about 3.5:1.0.

Claim 29

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Tetrahydrofurfuryl methacrylate 40 Ethyl methacrylate 60 2-hydroxyethyl-p-toluidine 0.5 and a powder component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Poly (ethyl methacrylate) with 1.5% benzoyl peroxide 50 a 90 to 10 mixture of poly (ethyl methacrylate) and poly (methyl methacrylate) without added benzoyl peroxide 50, ______________________________________ the powder-to-resin ratio being about 3.5:1.0.

Claim 30

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Tetrahydrofurfuryl methacrylate 50 Ethyl methacrylate 50 2-hydroxyethyl-p-toluidine 0.3 2-hydroxy-4-methoxybenzophenone 2.0 ______________________________________ and a powder component consisting essentially of poly (ethyl methacrylate) with 1.5% added benzoyl peroxide, the powder-to-resin ratio being about 3.5:1.0.

Claim 31

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Tetrahydrofurfuryl methacrylate 50 Ethyl methacrylate 50 2-hydroxyethyl-p-toluidine 0.3 2-hydroxy-4-methoxybenzophenone 2.0 ______________________________________ and a powder component consisting essentially of poly (ethyl methacrylate) with 1.5% added benzoyl peroxide, the powder-to-resin ratio being about 3.5:1.0.

Claim 32

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Tetrahydrofurfuryl methacrylate 30 Ethyl methacrylate 70 2-hydroxyethyl-p-toluidine 1.0 2-hydroxy-4-methoxybenzophenone 2.0 Butylated hydroxytoluene 0.1 ______________________________________ and a powder component consisting essentially of poly (ethyl methacrylate) with 1.5% added benzoyl peroxide, the powder-to-resin ratio being about 3.5:1.0.

Claim 33

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Tetrahydrofurfuryl methacrylate 30 Ethyl methacrylate 70 2-hydroxyethyl-p-toluidine 1.0 2-hydroxy-4-methoxybenzophenone 2.0 Butylated hydroxytoluene 0.1 ______________________________________ and a powder component consisting essentially of poly (ethyl methacrylate) with 1.5% added benzoyl peroxide, the powder-to-resin ratio being about 3.5:1.0.

Claim 34

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Tetrahydrofurfuryl methacrylate 56 Ethyl methacrylate 85 N,N-3,5-tetramethyl aniline 1.0 Butylated hydroxytoluene 0.14 ______________________________________ and a powder component consisting essentially of poly (ethyl methacrylate) with 1.5% added benzoyl peroxide, the powder-to-resin ratio being about 3.5:1.0.

Claim 35

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Tetrahydrofurfuryl methacrylate 56 Ethyl methacrylate 85 N,N-3,5-tetramethyl aniline 1.0 Butylated hydroxytoluene 0.14 ______________________________________ and a powder component consisting essentially of poly (ethyl methacrylate) with 1.5% added benzoyl peroxide, the powder-to-resin ratio being about 3.5:1.0.

Claim 36

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Tetrahydrofurfuryl methacrylate 56 Ethyl methacrylate 85 N,N-3,5-tetramethyl aniline 2.0 Butylated hydroxytoluene 0.14 ______________________________________ and a powder component consisting essentially of poly (ethyl methacrylate) with 1.5% added benzoyl peroxide, the powder-to-resin ratios from about 2:1 to about 5:1.

Claim 37

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Tetrahydrofurfuryl methacrylate 56 Ethyl methacrylate 85 N,N-3,5-tetramethyl aniline 2.0 Butylated hydroxytoluene 0.14 ______________________________________ and a powder component consisting essentially of poly (ethyl methacrylate) with 1.5% added benzoyl peroxide, the powder-to-resin ratios from about 2:1 to about 5:1.

Claim 38

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Ethyl methacrylate 40 Tetrahydrofurfuryl methacrylate 60 2-hydroxy-4-methoxybenzophenone 2.0 and a powder component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Poly (ethyl methacrylate) with 1.5% benzoyl peroxide 70 Barium glass coated with silane 30, ______________________________________ the powder-to-resin ratio being about 4:1.

Claim 39

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Ethyl methacrylate 40 Tetrahydrofurfuryl methacrylate 60 2-hydroxy-4-methoxybenzophenone 2.0 and a powder component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Poly (ethyl methacrylate) with 1.5% benzoyl peroxide 70 Barium glass coated with silane 30, ______________________________________ the powder-to-resin ratio being about 4:1.

Claim 40

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Ethyl methacrylate 34.83 Tetrahydrofurfuryl methacrylate 52.25 Ethoxylated bisphenol A dimethacrylate 9.68 Butylated hydroxytoluene 0.10 2-hydroxyethyl-p-toluidine 1.12 2-hydroxy-4-methoxybenzopherine 1.94 ______________________________________ and a powder component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Poly (ethyl methacrylate) with added benzoyl peroxide 70.0 Barium glass coated with silane 30.0 the powder-to-resin ratio being about 3.5:1.0. ______________________________________

Claim 41

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Ethyl methacrylate 34.83 Tetrahydrofurfuryl methacrylate 52.25 Ethoxylated bisphenol A dimethacrylate 9.68 Butylated hydroxytoluene 0.10 2-hydroxyethyl-p-toluidine 1.12 2-hydroxy-4-methoxybenzopherine 1.94 ______________________________________ and a powder component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Poly (ethyl methacrylate) with added benzoyl peroxide 70.0 Barium glass coated with silane 30.0 the powder-to-resin ratio being about 3.5:1.0. ______________________________________

Claim 42

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Part I Ethyl methacrylate 40 Tetrahydrofurfuryl methacrylate 60 2-hydroxy-4-methoxybenzophenone 2.0 Butylated hydroxytoluene 0.1 2-hydroxyethyl-p-toluidine 1.0 Part II Ethoxylated bisphenol A dimethacrylate 100.0 2-hydroxy-4-methoxybenzophenone 2.0 Butylated hydroxytoluene 0.1 2-hydroxyethyl-p-toluidine 2.0 ______________________________________ the ratio of Part I and Part II lying in the range of 1:9 to 9:1, and a powder component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Poly (ethyl methacrylate) with 1.5% benzoyl peroxide 70 Barium glass coated with silane 30 ______________________________________ the powder-to-resin ratio being about 3.5:1.0.

Claim 43

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Part I Ethyl methacrylate 40 Tetrahydrofurfuryl methacrylate 60 2-hydroxy-4-methoxybenzophenone 2.0 Butylated hydroxytoluene 0.1 2-hydroxyethyl-p-toluidine 1.0 Part II Ethoxylated bisphenol A dimethacrylate 100.0 2-hydroxy-4-methoxybenzophenone 2.0 Butylated hydroxytoluene 0.1 2-hydroxyethyl-p-toluidine 2.0 ______________________________________ the ratio of Part I and Part II lying in the range of 1:9 to 9:1, and a powder component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Poly (ethyl methacrylate) with 1.5% benzoyl peroxide 70 Barium glass coated with silane 30 ______________________________________ the powder-to-resin ratio being about 3.5:1.0.

Claim 44

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Ethyl methacrylate 36 Tetrahydrofurfuryl methacrylate 54 Ethoxylated bisphenol A dimethacrylate 10 Butylated hydroxytoluene 0.10 2-hydroxyethyl-p-toluidine 1.25 2-hydroxy-4-methoxybenzophenone 2.0 ______________________________________ and a powder component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Poly (ethyl methacrylate) with 1.5% benzoyl peroxide 70 Barium glass 30 Silane 0.45 ______________________________________ the powder-to-resin ratio being about 3.5:1.0.

Claim 45

A provisional crown-and-bridge resin, consisting essentially of a liquid resin component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Ethyl methacrylate 36 Tetrahydrofurfuryl methacrylate 54 Ethoxylated bisphenol A dimethacrylate 10 Butylated hydroxytoluene 0.10 2-hydroxyethyl-p-toluidine 1.25 2-hydroxy-4-methoxybenzophenone 2.0 ______________________________________ and a powder component consisting essentially of: ______________________________________ Ingredient Parts by Weight ______________________________________ Poly (ethyl methacrylate) with 1.5% benzoyl peroxide 70 Barium glass 30 Silane 0.45 ______________________________________ the powder-to-resin ratio being about 3.5:1.0.