Patowary, John, and Daya Shankar. “Measurement of Nickel and Chromium Level in GCF of Patients Undergoing Orthodontic Treatment With or Without Fluoridated Toothpaste”. International journal of health sciences 6, no. S1 (March 16, 2022): 591–596. Accessed May 24, 2026. https://sciencescholar.us/journal/index.php/ijhs/article/view/4809.