US 11,918,664 B2
Direct dental filling compositions
Florian Szillat, Neukirchen-Vluyn (DE); Caroline Renn, Singen (DE); Christoph Weber, Constance (DE); Uwe Walz, Constance (DE); and Joachim Klee, Radolfzell (DE)
Assigned to DENTSPLY SIRONA INC., York, PA (US)
Filed by DENTSPLY SIRONA inc., York, PA (US)
Filed on Jun. 10, 2021, as Appl. No. 17/343,886.
Application 17/343,886 is a continuation of application No. 16/472,011, granted, now 11,071,693, previously published as PCT/EP2017/082698, filed on Dec. 13, 2017.
Claims priority of application No. 16205373 (EP), filed on Dec. 20, 2016.
Prior Publication US 2021/0308019 A1, Oct. 7, 2021
Int. Cl. A61K 6/889 (2020.01); C08K 5/14 (2006.01); C08L 33/08 (2006.01); C08L 33/10 (2006.01); C08L 33/26 (2006.01)
CPC A61K 6/889 (2020.01) [C08K 5/14 (2013.01); C08L 33/08 (2013.01); C08L 33/10 (2013.01); C08L 33/26 (2013.01)] 13 Claims
 
1. An aqueous dental glass ionomer composition for use in the treatment of cavitated carious lesions, wherein the glass ionomer composition comprises
(A) a reactive particulate glass,
(B) an hydrolysis-stable water-soluble, polymerizable polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction, whereby the polymerizable polymer has a polymer backbone and pendant groups having one or more polymerizable carbon-carbon double bonds, and
(C) a polymerization initiator system;
wherein component (B) does not contain an ester group which hydrolyzes in aqueous media at pH 3 at room temperature within one month, and wherein the dental glass ionomer composition, when cured, provides a permanent direct restoration having a flexural strength of at least 80 MPa.