Chemical additives for use in the manufacture of dental solutions, namely, linear polysaccharide composed of randomly distributed ß-(1?4)-linked D-glucosamine (deacetylated unit) and N-acetyl-D-glucosamine (acetylated unit) being an ingredient or component of solutions used in dental procedures; Ingredient or component of a tooth coating solution for use in dental procedures, namely, chitosan and linear polysaccharide composed of randomly distributed ß-(1?4)-linked D-glucosamine (deacetylat...