Traditional and nontraditional, innovative and ephemeral materials and techniques in today's cultural hetitage

When working with products of contemporary art, one must consider traditional, innovative, and ephemeral materials, depending on the artist´s intentions, to which the concepts of originality and authenticity do not always apply. Case studies are discussed to compare the conservation and restoration procedures of works of art of different ages. The importance of the involvement of historicaltechnical experts, authors, and manufacturers of the materials used in the artifacts is highlighted. The procedure of conservation cannot be the same for all works of contemporary art. One must employ a methodology based on the critical study of not only the materials used but also of the philosophy and creative conceptual intentions of the artist.