![]() ![]() All the relevant studies were included in the search with respect to the characteristics and evolution of new marine derived materials. Authors conducted a search of articles in written in English published from 2008 to 2018. A comprehensive review of the current literature was conducted according to the PRISMA guidelines by accessing the NCBI PubMed database. The advantages of using alginate include the low cost, a better tolerability on the part of the patient, the ease of manipulation, the short time needed for execution, the instrumentation and the very simple execution technique and possibility of detecting a detailed impression (even in the presence of undercuts) in a single step. With the removal of the impression, being particularly rich in water, the imprints can deform but later adapt to the original shape due to the elastic properties they possess. They reproduce an imprint faithfully, providing details of a high definition despite the presence of undercuts. Elastic impression materials include reversible (agar-agar), irreversible (alginate) hydrocolloids and synthetic elastomers (polysulfides, polyethers, silicones). were the first elastic materials to be used in the dental field. ![]() 11 Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, Messina University, 98100 ME Messina, Italy. 10 Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, Messina University, 98100 ME Messina, Italy. 9 Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, Messina University, 98100 ME Messina, Italy. 8 Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, Messina University, 98100 ME Messina, Italy. 7 Department of Surgical and Biomedical Sciences, Catania University, 95123 Catania, Italy. 6 Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, Messina University, 98100 ME Messina, Italy. 5 Department of Clinical and Experimental Medicine, University of Foggia, 71122 Foggia, Italy. 4 Multidisciplinary Department of Medical-Surgical and Odontostomatological Specialties, University of Campania "Luigi Vanvitelli", 80100 Naples, Italy. 3 Department of Maxillofacial Surgery, Loma Linda University, Loma Linda, CA 92354, USA. ![]() 2 Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, Messina University, 98100 ME Messina, Italy. 1 Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, Messina University, 98100 ME Messina, Italy.
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