3m Innovative Properties Company

Hoa T Bui

Joel D Oxman

Brant Ulrick Kolb

Sumita Basu Mitra

Lani S Kangas

Jacqueline C Rolf

Jason P Thalacker

Babu Nana Gaddam

Larry R Krepski

Ahmed Salih Abuelyaman

Guy D Joly

Bradley Dene Craig

William H Moser

Dwight W Jacobs

Afshin Falsafi

Timothy D Dunbar

Chuntao Cao

Jie Jerry Liu

Kenton D Budd

Mahfuza B Ali

Mai T Nguyen

Jingwen Ma

Dental compositions are described comprising an addition-fragmentation agent of the formula:  Also described are dental articles prepared from a dental composition comprising an addition-fragmentation agent and methods of treating a tooth surface.

Dental compositions comprising ethylenically unsaturated addition-fragmentation agent

Dental compositions are described comprising an addition-fragmentation agent comprising at least one ethylenically unsaturated terminal group and a backbone unit comprising an &#x3b1;,&#x3b2;-unsaturated carbonyl; at least one monomer comprising at least two ethylenically unsaturated group; and inorganic oxide filler. The addition-fragmentation agent is preferably free-radically cleavable. The addition-fragmentation agent preferably comprises at least two ethylenically unsaturated terminal groups, such as (meth)acTylate groups. In some embodiments, the addition-fragmentation agent has the formula: wherein R, Rand Rare each independently Z, -Q-, a (hetero)alkyl group or a (hetero)aryl group with the proviso that at least one of R, Rand Ris Z-Q-; Q is a linking group have a valence of m+1; Z is an ethylenically unsaturated polymerizable group; m is 1 to 6; each X1 is independently &#x2014;O&#x2014; or &#x2014;NR&#x2014;, where Ris H or C-Calkyl; and n is 0 or 1. Also described are dental articles prepared from a dental composition comprising an addition-fragmentation agent and methods of treating a tooth surface. 

Thermally responsive compositions that include a thermally responsive viscosity modifier, a polymerizable component, and water are provided. The compositions, which optionally may be hardened, are useful for application to a surface of a body.

Hardenable thermally responsive compositions

The present invention features ionomer compositions containing nanozirconia fillers. The compositions can be used in a variety of dental and orthodontic applications, for example, as adhesives, cements, restoratives, coatings and sealants.

Dental compositions containing nanozirconia fillers

The present invention features ionomer compositions containing nanofillers. The compositions can be used in a variety of dental and orthodontic applications, for example, as adhesives, cements, restoratives, coatings and sealants.

Dental compositions containing nanofillers and related methods

The present invention provides a dental paste, methods of making and using the dental paste, and compositions prepared therefrom. The dental paste includes (a) a filler including porous, non-pyrogenic silica having a silane treated surface and being substantially free of heavy metals and (b) a filler including non-agregated primary silica particles, with the fillers being dispersed in a hardenable resin. Fillers including porous, non-pyrogenic silica, and methods of making and using the fillers, are also provided.

Dental fillers, pastes, and compositions prepared therefrom

Dental material including fatty acid, dimer thereof, or trimer thereof

In a first aspect, a method for treating hard tissue that includes: (a) applying to hard tissue a composition that includes a cationically active functional group, a free radically active functional group, and a polymerization initiator capable of initiating free radical polymerization, where the number of moles of cationically active functional groups per gram of composition is no greater than about 0.0075; and (b) exposing the composition to polymerization conditions to form an adhesive bonded to the hard tissue. In a second aspect, a method for treating hard tissue that includes: (a) applying to hard tissue a first polymerizable composition that includes a free radically active functional group and a polymerization initiator capable of initiating free radical polymerization, but is essentially free of polymerizable components having cationically active functional groups and is capable of forming an adhesive bonded to the hard tissue upon exposure to polymerization conditions; (b) applying a second polymerizable composition; and (c) exposing the second composition to polymerization conditions to form a hardened composition adhered to the hard tissue. The second composition includes (i) a cationically active functional group and (ii) an polymerization initiator capable of initiating cationic polymerization.

Process for treating hard tissues

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Mendota Heights, MN, United States of America

Hoa T Bui