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Esthetic use of a free gingival autograft to cover an amalgam tattoo: report of case. J Am Dent Assoc 1981;102(3):334-5. https:\/\/doi.org\/10.14219\/jada.archive.1981.0036, PMID:6936474","DOI":"10.14219\/jada.archive.1981.0036"},{"key":"8","doi-asserted-by":"crossref","unstructured":"[8] Aguirre-Zorzano LA, Garcia-De-La-Fuente AM, Estefania-Fresco R. Treatment of Amalgam Tattoo With a New Technique: Mucoabrasion and Free Connective Tissue Graft. Clin Adv Periodontics 2019;9(3):120-4. https:\/\/doi.org\/10.1002\/cap.10058, PMID:31490045","DOI":"10.1002\/cap.10058"},{"key":"9","doi-asserted-by":"crossref","unstructured":"[9] Campbell CM, Deas DE. Removal of an amalgam tattoo using a subepithelial connective tissue graft and laser deepithelialization. J Periodontol 2009;80(5):860-4. https:\/\/doi.org\/10.1902\/jop.2009.080613, PMID:19405840","DOI":"10.1902\/jop.2009.080613"},{"key":"10","unstructured":"[10] Thumbigere-Math V, Johnson DK. 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