Ivoclar Vivadent Ag

Adolphe Merkle Institute, University of Fribourg

Gina Fiore

Christoph Weder

Volker Rheinberger

Norbert Moszner

Ulrich Salz

Thomas Hirt

Kai Rist

Christian Heinzmann

Diederik Balkenende

Supramolecular polymers or materials that exhibit high stiffness and can efficiently be healed. The supramolecular materials polymer is based on monomers having three or more same or different binding sites that permit non-covalent, directional interactions between multiple monomer molecules. The properties of the supramolecular networks formed from the monomers are governed by cross-linked architecture and the large weight-fraction of the binding motif. The material in one embodiment forms a disordered glass, which in spite of the low-molecular weight of the building block, displays typical polymeric behavior. The material exhibits high stiffness and offers excellent coating and adhesive properties. On account of reversible dissociation and the formation of a low-viscosity liquid upon application of an optical stimulus or thermal stimulus or both, rapid healing as well as (de)bonding are possible.

Stimulus-responsive supramolecular glasses

The invention relates to a dental restorative material which comprises a thermolabile compound of Formula I:[(Z)-Q-X)]-T-[Y-Q-(Z)]&#x2003;&#x2003;Formula I,in which T represents a thermolabile unit which contains at least one thermolabile group based on non-covalent interactions, Zand Zin each case independently represent a polymerizable group selected from vinyl groups, CH&#x2550;CR&#x2014;CO&#x2014;O&#x2014; and CH&#x2550;CR&#x2014;CO&#x2014;NR&#x2014; or an adhesive group selected from &#x2014;Si(OR), &#x2014;COOH, &#x2014;O&#x2014;PO(OH), &#x2014;PO(OH), &#x2014;SOOH and &#x2014;SH, Qin each case independently is missing or represents an (m+1)-valent linear or branched aliphatic C-Cradical which can be interrupted by &#x2014;O&#x2014;, &#x2014;S&#x2014;, &#x2014;CO&#x2014;O&#x2014;, &#x2014;O&#x2014;CO&#x2014;, &#x2014;CO&#x2014;NR&#x2014;, &#x2014;NR&#x2014;CO&#x2014;, &#x2014;O&#x2014;CO&#x2014;NR&#x2014;, &#x2014;NR&#x2014;CO&#x2014;O&#x2014; or &#x2014;NR&#x2014;CO&#x2014;NR&#x2014;, Qin each case independently is missing or represents an (n+1)-valent linear or branched aliphatic C-Cradical which can be interrupted by &#x2014;O&#x2014;, &#x2014;S&#x2014;, &#x2014;CO&#x2014;O&#x2014;, &#x2014;O&#x2014;CO&#x2014;, &#x2014;CO&#x2014;NR&#x2014;, &#x2014;NR&#x2014;CO&#x2014;, &#x2014;O&#x2014;CO&#x2014;NR&#x2014;, &#x2014;NR&#x2014;CO&#x2014;O&#x2014; or &#x2014;NR&#x2014;CO&#x2014;NR&#x2014;, X and Y in each case independently are missing or represent &#x2014;O&#x2014;, &#x2014;S&#x2014;, CO&#x2014;O&#x2014;, &#x2014;O&#x2014;CO&#x2014;, &#x2014;CO&#x2014;NR&#x2014; or &#x2014;NR&#x2014;CO&#x2014;, R, R, Rand Rin each case independently represent H or a C-Calkyl radical, k and l in each case independently are 0, 1, 2 or 3 and m and n in each case independently are 1, 2 or 3.

Dental materials based on compounds having debonding-on-demand properties

Growing community of inventors

Marly, Switzerland

Gina Fiore