Soebagio and Yogiartono, R.M. 2020. The Effectiveness Of The Long-Term Acrylic Resin Plate Immersion In Various Concentrations Of Black Tea On Color Change Difference. International Journal of Psychosocial Rehabilitation. 24, 9 (Nov. 2020), 3611–3622. DOI:https://doi.org/10.61841/35kh8b19.