The present application is directed to a curable composition and a method for isolating a working area in a patient's mouth. The curable composition can include a borate-crosslinked polysiloxane, at least one ethylenically unsaturated monomer comprising at least two polymerizable groups, and an initiator.

The invention relates to a composition for isolating tissue, the composition comprising a radiation curable component A1, preferably being present in an amount of at least 40 wt. % with respect to the composition, the radiation curable component A1 comprising a polyether polyol spacer group having a molecular weight (Mw) of 1,000 to 20,000 g/mol, and at least two (meth)acrylate moieties, photo-initiator, guanidyl containing polymer, carrageenan, optionally softener, optionally dye, optionally filler, optionally additives. The invention also relates to a process for temporarily isolating tissue, the process comprising the steps of providing the composition described in any of the preceding claims, placing the composition in contact with tissue, radiation curing the composition at least partially for a time period T1, optionally moving or adjusting the partially cured composition, optionally radiation curing the partially cured composition for a time period T2, wherein T2>T1, removing the composition from the tissue.

The invention relates to a composition for isolating tissue, the composition comprising a radiation curable component A1, preferably being present in an amount of at least 40 wt. % with respect to the composition, the radiation curable component A1 comprising a polyether polyol spacer group having a molecular weight (Mw) of 1,000 to 20,000 g/mol, and at least two (meth)acrylate moieties, photo-initiator, guanidyl containing polymer, carrageenan, optionally softener, optionally dye, optionally filler, optionally additives. The invention also relates to a process for temporarily isolating tissue, the process comprising the steps of providing the composition described in any of the preceding claims, placing the composition in contact with tissue, radiation curing the composition at least partially for a time period T1, optionally moving or adjusting the partially cured composition, optionally radiation curing the partially cured composition for a time period T2, wherein T2>T1, removing the composition from the tissue.

The invention relates to a retraction paste comprising a composition of i) 10 to 25% by weight at least one astringent compound, ii) 50 to 75% by weight fillers, iii) 10 to 35% by weight protic liquid, and iv) 0 to 10% by weight pigments, dye and/or rheology additive, ii) the fillers comprising kaolinite and mica in the ratio of 4:1 to 1.5:1 and, the total composition of components i) to iv) in the retraction paste amounting to 100% by weight, a method for producing the retraction paste, a kit comprising a container with the retraction paste for single or repeated use, as well as a retraction paste as an agent for haemostasis.

The invention relates to a retraction paste comprising a composition of i) 10 to 25% by weight at least one astringent compound, ii) 50 to 75% by weight fillers, iii) 10 to 35% by weight protic liquid, and iv) 0 to 10% by weight pigments, dye and/or rheology additive, ii) the fillers comprising kaolinite and mica in the ratio of 4:1 to 1.5:1 and, the total composition of components i) to iv) in the retraction paste amounting to 100% by weight, a method for producing the retraction paste, a kit comprising a container with the retraction paste for single or repeated use, as well as a retraction paste as an agent for haemostasis.