T, Santhosh, Kaarthikeyan G, and Sankari malaiappan. 2019. “PREVALENCE OF GINGIVAL HYPERPIGMENTATION AMONG OLDER INDIVIDUALS MORE THAN 40 YEARS OF AGE ”. International Journal of Psychosocial Rehabilitation 23 (6): 978-92. https://doi.org/10.61841/gpr29j46.