In Dr. Jekyll and Mr. Hyde, what economic, social and aesthetic associations are used to describe/depict Jekyll's entrance and Hyde's entrance?

Do you mean the character's entrance into the story. This is only a short answer space but I can comment. Jekyll is described as a distinguished and refined man of education. He is polite and well mannered. Jekyll is an example of the well bred Victorian male. Hyde, on the other hand, is the antitheses of Jekyll. He is wild and prone to vulgarity and violence.