Dental compositions, mill blocks, and methods
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61C-008/00
A61L-024/02
C08K-003/34
A61C-013/00
C08K-009/02
출원번호
US-0516981
(2010-12-22)
등록번호
US-9962245
(2018-05-08)
국제출원번호
PCT/US2010/061748
(2010-12-22)
§371/§102 date
20140116
(20140116)
국제공개번호
WO2011/087832
(2011-07-21)
발명자
/ 주소
Craig, Bradley D.
Johnson, Ryan E.
출원인 / 주소
3M Innovative Properties Company
인용정보
피인용 횟수 :
0인용 특허 :
35
초록▼
A dental composition comprising a polymerizable resin comprising ethylenically unsaturated groups; a thermally activated initiator dissolved in the resin; and an inorganic filler combined with the resin in an amount greater than about 60 percent by weight based upon the weight of the composition; wh
A dental composition comprising a polymerizable resin comprising ethylenically unsaturated groups; a thermally activated initiator dissolved in the resin; and an inorganic filler combined with the resin in an amount greater than about 60 percent by weight based upon the weight of the composition; wherein the initiator is activated at a temperature of about 100 to about 150° C. to provide free radicals; and wherein the filler has a surface area of at least about 65 square meters per gram filler; a dental mill block comprising the thermally cured composition, a method of manufacturing the dental mill block, and a kit comprising a plurality of the mill blocks are provided.
대표청구항▼
1. A method of manufacturing a dental mill block, the method comprising: providing a composition comprising: a polymerizable resin comprising an ethylenically unsaturated group;a thermally activatable initiator dissolved in the resin; andan inorganic filler combined with the resin, wherein the fille
1. A method of manufacturing a dental mill block, the method comprising: providing a composition comprising: a polymerizable resin comprising an ethylenically unsaturated group;a thermally activatable initiator dissolved in the resin; andan inorganic filler combined with the resin, wherein the filler is present in an amount of at least 60 percent by weight based upon the weight of the composition;wherein the initiator is activatable at a temperature of about 100 to about 150° C. to provide free radicals; andwherein the inorganic filler comprises nanoclusters comprising silica nanoparticles and at least one other metal oxide, wherein the silica nanoparticles are prepared from a silica sol comprising silica nanoparticles;wherein the nanoclusters have a surface area of at least 65 square meters per gram;shaping the composition into a desired mill block configuration; andthermally curing the composition at a temperature of about 100° C. to about 150° C. 2. The method of claim 1, the wherein the surface area of the nanoclusters is at least 80 square meters per gram filler. 3. The method of claim 1, wherein the filler is present in an amount of at least 75 percent by weight based upon the weight of the composition. 4. The method of claim 1, wherein the at least one other metal oxide comprises heavy metal oxide, non-heavy metal oxide, or a combination thereof. 5. The method of claim 1, wherein the initiator is selected from the group consisting of dicumyl peroxide, t-butyl peroxide, 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane; 2,5-bis(tert-butylperoxy)-2,5-dimethyl-3-hexyne; bis(1-(tert-butylperoxy)-1-methylethyl)benzene; tert-butyl peracetate; tert-butyl peroxybenzoate; cumene hydroperoxide; 2,4-pentanedione peroxide; peracetic acid, and combinations thereof. 6. The method of claim 5, the wherein the initiator is dicumyl peroxide. 7. The method of claim 1, wherein the initiator is present in the composition in an amount of about 0.2 to about 3 percent based upon the weight of the polymerizable resin. 8. The method of claim 1, wherein the polymerizable resin comprises a compound selected from the group consisting of 2,2-bis[4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl]propane (Bis-GMA), triethyleneglycol dimethacrylate (TEGDMA), urethane dimethacrylate (UDMA), 4 to 10 mole ethoxylated Bisphenol-A dimethacrylate (Bis-EMA), dimethacrylates of polyethylene glycols of 200 to 1000 weight average molecular weight, glycerol dimethacrylate, 1,3-propanediol dimethacrylate, and a combination thereof. 9. The method of claim 1, wherein the polish retention of the composition after the step of thermally curing the composition at a temperature of about 100° C. to about 150° C. is at least 90 gloss units (GF) after 3000 brush strokes according to Test Method II. 10. The method of claim 1, wherein the wear loss of the composition after the step of thermally curing the composition at a temperature of about 100° C. to about 150° C. is less than 7 microns after 200,000 cycles according to Test Method III. 11. A kit comprising a plurality of mill blocks made according to the method of claim 1. 12. The method of claim 1, wherein the nanoclusters comprise silica nanoparticles and zirconia nanoparticles. 13. The method of claim 1, wherein the silica nanoparticles comprise non-pyrogenic silica nanoparticles. 14. The method of claim 1, wherein the initiator does not produce appreciable amounts of free-radical initiating species below a temperature of 100° C. 15. A mill block prepared according to the method of claim 1. 16. An implant abutment formed from the mill block of claim 15. 17. The method of claim 1, wherein after the step of thermally curing the composition at a temperature of about 100° C. to about 150° C., the composition has a flexural strength of at least 180 MPa according to Test Method I.
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Mitra Sumita B. (Woodbury MN), Method of dental treatment using poly(ethylenically unsaturated) carbamoyl isocyanurates and dental materials made there.
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