Dental amalgam risks in dental staff: systematic review Abdelkarim Manyani, Hanane Chaou, Naima Rhalem, Abdelmajid Soulaymani and Rachida Soulaymani Bencheikh E3S Web Conf., 319 (2021) 01001 Published online: 09 November 2021 DOI: 10.1051/e3sconf/202131901001