Tan SX, Basri NN, Zainol Abidin K. Challenges in managing plasma cell gingivitis associated with copper sulphate: a case report. M Dent J [internet]. 2022 Dec. 13 [cited 2026 Sep. 28];42(3):223-30. available from: https://he02.tci-thaijo.org/index.php/mdentjournal/article/view/259003