Tissue restoration composition

A tissue restoration composition in colloidal phase, comprising a copolymer in which a hydrophobic biocompatible polymer and a hydrophilic biocompatible polymer are polymerized and which is dispersed in water,

• wherein the colloidal phase is prepared by adding the copolymer to water, followed by heating to a temperature between a melting point of the copolymer and a boiling point of the water, and
• wherein the colloidal phase has a viscosity of 20-200,000 cP,
• wherein the hydrophobic biocompatible polymer is at least any one polymer selected from the group consisting of polyglycolic acid, polycaprolactone, poly lactic acid, polydioxanone, poly(trimethylene carbonate), polyhydroxybutyrate, and a copolymer including the same, and
• wherein the hydrophilic biocompatible polymer is at least any one polymer selected from the group consisting of methoxy polyethylene glycol, dihydroxy polyethylene glycol, mono-alkoxy polyethylene glycol, and polyethylene glycol,
• wherein the concentration of the copolymer in a colloidal solution is 10-50 wt %, and wherein the hydrophilic biocompatible polymer has molecular weight of 5,000-50,000 g/mol, the hydrophobic biocompatible polymer has molecular weight of 5,000-50,000 g/mol, and the copolymer has molecular weight of 10,000-120,000 g/mol.