Department of Periodontology, Rungta College of Dental Sciences and Research, Bhilai, Chhattisgarh, India. Department of Periodontology, Aditya Dental College, Beed, Maharastra, India. Department of Periodontology, VYWS Dental College and Hospital, Amravati, Maharastra, India. Department of Periodontology, Government Dental College, Raipur, Chhattisgarh, India.