Mojan Madani, Valiollah Arash, Manouchehr Rahmati Kamel, Amir Kiakojori and Ali Bijani, “Evaluation of the Effect of Fixed Orthodontic Retainers with Silver ION Coating on Periodontal Indices”, IJAST, vol. 29, no. 11s, pp. 501 - 505, Jun. 2020.