Composite materials having a low shrinkage force

Details Composite materials having a low shrinkage force Composite materials having a low shrinkage force

2006-04-21

2009-10-13

Yoon, Tae H (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S117000, C524S493000, C524S494000, C433S228100

Reexamination Certificate

active

07601767

ABSTRACT:
For composite materials having a total filler content of 80 to 95% by weight, containingA) 0.5 to 10% by weight of non-agglomerated nanofillers having particle sizes of 1 to 50 nm in the filler component,B) at least 60% by weight of a filler mixture of 50 to 90% coarse-particle and 10 to 50% fine-particle dental glass in the filler component, having a size ratio, relative to the average particle size (d50value), of coarse to fine particles of >1:4 to 1:30,C) as monomer component, a monomer mixture ofi. 60 to 80% bis-GMA or TCD-di-HEMA or TCD-di-HEA,ii. 10 to 18% UDMA,iii. Residual TEDMA and/or multifunctional crosslinkers,D) up to 1% photoinitiator(s); andE) optionally, at least one additional dental glass in the filler component having a different particle size than the coarse- and fine-particle dental glass,the polymerization shrinkage may be reduced to <1.6% by volume (measured according to the bonded disk method; Dental Materials (2004) 20, 88-95), andthe shrinkage force (measured according to the photoelastic method; Dental Materials (2004) 20, 313-321) may be reduced to <3.5 MPa (measured 24 hours after polymerization).

REFERENCES:
patent: 4629746 (1986-12-01), Michl et al.
patent: 4649165 (1987-03-01), Kuhlmann
patent: 5228907 (1993-07-01), Eppinger et al.
patent: 5750590 (1998-05-01), Schaefer et al.
patent: 5936006 (1999-08-01), Rheinberger et al.
patent: 6063831 (2000-05-01), Kubo et al.
patent: 6353039 (2002-03-01), Rheinberger et al.
patent: 6362251 (2002-03-01), Alkemper et al.
patent: 6387981 (2002-05-01), Zhang et al.
patent: 6482004 (2002-11-01), Senn et al.
patent: 6572693 (2003-06-01), Wu et al.
patent: 6593395 (2003-07-01), Angeletakis et al.
patent: 6620864 (2003-09-01), Schmid
patent: 6706356 (2004-03-01), Lee
patent: 6709271 (2004-03-01), Yin et al.
patent: 6783810 (2004-08-01), Jin et al.
patent: 6855197 (2005-02-01), Su et al.
patent: 2004/0253383 (2004-12-01), Belik et al.
patent: 2005/0065227 (2005-03-01), Condon
patent: 2006/0058414 (2006-03-01), Arthur et al.
patent: 34 03 040 (1985-08-01), None
patent: 35 02 594 (1986-07-01), None
patent: 196 17 931 (1997-11-01), None
patent: 198 51 038 (1999-07-01), None
patent: 199 05 093 (2000-08-01), None
patent: 199 13 890 (2000-09-01), None
patent: 0486775 (1991-08-01), None
patent: 10 29 880 (2000-08-01), None
patent: 1 387 658 (2004-02-01), None
patent: WO 00/21488 (2000-04-01), None
patent: WO 01/30304 (2001-05-01), None
patent: WO 01/30305 (2001-05-01), None
patent: 10 2004 017 124 (2005-11-01), None
Claus-Peter Ernst, Nicole Brand, Ulrike Frommator, Gerd Rippin, Brita Willershausen. Reduction of polymerization shrinkage stress and marginal microleakage using soft-start polymerization. Journal of Esthetic and Restorative Dentistry (2003); 15: 93-103. BC Decker Inc.
S.H. Kim, D.C. Watts. Polymerization shrinkage-strain kinetics of temporary crown and bridge materials. Dental Materials (2004); 20: 88-95. Elsevier Ltd.
Claus-Peter Ernst, Gerrit R. Meyer, Kerstin Klöcker, Brita Willershausen, Determintation of polymerization shrinkage stress by means of a photoelastic investigation. Dental Materials (2004); 20; 313-321. Elsevier Ltd.

Affiliated with

Also associated with

Rating

Composite materials having a low shrinkage force does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Composite materials having a low shrinkage force, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite materials having a low shrinkage force will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4142991