Dentsply International Inc.

Dentsply Sirona Inc.

Simon Stelzig

Joachim E Klee

Christoph Weber

Andreas Facher

Uwe Walz

Jörg Kempter

Stephanie Noerpel

Dental cement composition comprising (i) a particulate filler reactive with a polyacid in a cement reaction; (ii) a water-soluble polymerizable compound of the following formula (1), AXn (1) wherein A is a linker group containing at least n nitrogen atoms and optionally one or more acidic groups, X are moieties containing a polymerizable double bond and forming an amide bond with a nitrogen atom of A, which X may be the same or different and are represented by the following formula (2) wherein Rand Rare independent from each other and represent a hydrogen atom, a Calkyl group or a group &#x2014;(CH)&#x2014;Z, wherein Z is COOM, OPOM, POM, SOM, and M is independently a hydrogen atom or a metal atom, and m is an integer of from 0 to 6, L is a bond or a Calkylene group; and n is an integer of at least 1; provided that at least one X cannot be a (meth)acryl group; and (iii) an initiator system; optionally a polyacidic polymer having polymerizable double bonds; and optionally water. 

Dental cement composition

A process for the preparation of composite filler particles, comprising: (a) coating a particulate filler having a median particle size (D50) of from 1 to 1200 nm; (b) agglomerating the coated particulate filler, for providing a granulation of the coated particulate filler wherein the granulation contains the coated particulate filler particles whereby the at least one coating layer may be crosslinked by crosslinking groups obtained by reacting the reactive groups and optionally a further crosslinking agent.

Composite filler particles and process for the preparation thereof

Dental composition comprising (i) a particulate filler; (ii) a polymerizable hydrolysis-stable compound of the following formula (1) AXwherein A is a linker group containing at least n nitrogen atoms and optionally one or more acidic groups, X are moieties containing a polymerizable double bond and forming an amide bond with a nitrogen atom of A, which X may be the same or different and are represented by the following formula (2) wherein Rand Rare independent from each other and represent a hydrogen atom, a Calkyl group or a group &#x2014;(CH)&#x2014;Z, wherein Z is COOM, OPOM, POM, SOM, and M is independently a hydrogen atom or a metal atom, and m is an integer of from 0 to 6, L is a bond, a Calkylene group; and n is an integer of at least 1; provided that at least one X cannot be a (meth)acryl group; and (iii) an initiator system.

Dental composition

Dental composition comprising a water-soluble polymerizable compound of the following formula (1): wherein A is a linear or branched linker group represented by the following formula (3), wherein the nitrogen atom of at least two of the termini forms an amide bond with an X moiety; wherein R' represents a hydrogen atom or a substituted or unsubstituted aliphatic or cycloaliphatic hydrocarbon group, wherein each R may be the same or different L, L, and Lwhich may be the same or different, independently represent a single bond, or a Cstraight-chain, branched or cyclic hydrocarbon group optionally containing from 1 to 6 heteroatoms selected from nitrogen and oxygen in the backbone of the hydrocarbon group, and optionally from 1 to 6 functional groups selected from carboxylic acid groups or a salt thereof, hydroxyl groups, thiol groups and amino groups, and in case a plurality of Land Lare present, each of Land Lmay be the same or different; Qand Q, which may be the same or different, independently represent a single bond or a linkage selected from an amide, a urethane, a urea and a thiourea linkage; k is an integer of at least 0, X are moieties containing a polymerizable double bond and forming an amide bond with a nitrogen atom of A, wherein each X may be the same or different and are represented by the following formula (2): wherein Rand Rare independent from each other and represent a hydrogen atom, a Calkyl group or a group &#x2014;(CH)&#x2014;COOM, wherein M represents a hydrogen atom or a metal atom, m is an integer of from 0 to 6, L is a bond or a Calkylene group; and n is an integer of at least 2; (ii) an initiator system; optionally a polyacidic polymer; optionally water and/or a water soluble solvent; and optionally a particulate filler. 

Growing community of inventors

Constance, Germany

Simon Stelzig