A randomised clinico-microbial trial evaluated the use of ozone as a supplement to scaling and root planing in the treatment of chronic periodontitis. Journal of Pharmaceutical Negative Results, [S. l.], p. 1294–1299, 2022. DOI: 10.47750/pnr.2022.13.S06.169. Disponível em: https://www.pnrjournal.com/index.php/home/article/view/1915.. Acesso em: 17 jun. 2026.