Shankargouda Patil1, Roopa Rao2, Thirumal Raj3. 1. Associate Professor, Department of Oral Pathology and Microbiology, Faculty of Dental Sciences, MS Ramaiah University of Applied Sciences, Bengaluru, Karnataka, India. 2. Professor and Head, Department of Oral Pathology, Faculty of Dental Sciences, MS Ramaiah University of Applied Sciences, Bengaluru, Karnataka, India. 3. Final Year Postgraduate Student, Department of Oral Pathology, Faculty of Dental Sciences, MS Ramaiah University of Applied Sciences, Bengaluru, Karnataka, India.