ISSN 2321-1482 Dental Journal of Advance Studies Official Publication of Himachal Pradesh University Chief Patron Financial Advisor Sanjay Tiwari Department of Conservative Dentistry Professor Sikander Kumar Deepti Garg & Endodontics, Pandit Bhagwat Dayal Vice Chancellor, Department of Oral Pathology & Sharma Post Graduate Institute of H.P. University, Shimla, Microbiology, Bhojia Dental College & Medical Sciences, Rohtak, Haryana, Himachal Pradesh, India Hospital, Baddi, Himachal Pradesh, India India Binu Purushothaman Patron Editorial Board Department of Orthodontics, KMCT Dental College, Kozhikode, Kerala, India Vikram Bhojia Jagat Bushan I.K. Pandit Bhojia Dental College & Hospital, Department of Conservative Dentist- Department of Pedodontics, Baddi, Himachal Pradesh, India ry & Endodontics, Dr. HSJ Institute DAV Dental College & Hospital, of Dental Sciences, Chandigarh, Haryana, India Editor Emeritus Punjab, India Uttam Kumar Sen Kavipal Singh Department of Prosthodontics, Tarun Kalra Department of Prosthodontics, Sri Guru Haldia Institute of Dental Sciences & Department of Prosthodontics, Bhojia Ram Das Institute of Medical Sciences & Research, Haldia, West Bengal, India Dental College & Hospital, Baddi, Research, Amritsar, Punjab, India Rajan Gupta Himachal Pradesh, India Aparna Palekar Department of Periodontology, Department of Conservative Dentistry Himachal Institute of Dental Sciences, Editor-in-Chief & Endodontics, Rural Dental College, Paonta Sahib, Himachal Pradesh, India Pravara Institute of Medical Sciences, Vinay Dua Varun Jindal Rahata, Maharashtra, India Department of Orthodontics, Department of Conservative Dentistry Sangeeta Palaskar National Dental College, Haryana, India & Endodontics, Bhojia Dental College & Department of Oral Pathology and Jayanta Kumar Dash Hospital, Baddi, Himachal Pradesh, India Microbiology, Sinhgad Dental College Department of Paedodontics, SCB and Hospital, Pune, Maharashtra, India Dental College & Hospital, Cuttack, Associate Editor Pramod John Odisha, India Department of Oral Medicine & Radiology, Yash Paul Dev Baljeet Singh Genesis Institute of Dental Sciences & Department of Periodontology, Department of Periodontology, Research, Ferozepur, Punjab, India Swami Devi Dayal Dental College, Bhojia Dental College & Hospital, Barwala, Haryana, India Baddi, Himachal Pradesh, India ISSN 2321-1482 K.S. Negi Vinod Kapoor Chief Advisors Department of Orthodontics, Department of Oral & Maxillofacial Govt Dental College & Hospital, Surgery, DAV Dental College, Ashu Gupta Shimla, Himachal Pradesh, India Himachal Pradesh, India Department of Conservative Dentistry Sachin Passi S.P.S. Sodhi & Endodontics, HP Govt. Dental Department of Conservative Dentistry Department of Oral Surgery, College, Shimla, & Endodontics, Shri Sukhmani Dental Dasmesh Institute of Research & Himachal Pradesh, India College, Dera Bassi, Punjab, India Dental Sciences, Faridkot, Punjab, India Anand Sagar Vimal Sikri Abi M. Thomas Department of Biosciences, Punjab Institute of Medical Sciences, Department of Pedodontics, H.P. University, Shimla, Himachal Jalandhar, Punjab, India Christian Dental College, Ludhiana, Pradesh, India Punjab, India D. K. Sharma Department of Chemistry, H.P. University, Shimla, Himachal Pradesh, India Copyright ©2021 Bhojia Dental College and Hospital affiliated to Himachal Dental Journal of Advance Studies is abstracted in EBSCO, Google Scholar, and Pradesh University. All rights, including the rights of publication, distribution, ProQuest. Thieme Medical Publishers is a member of the CrossRef initiative. and sales, as well as the right to translation, are reserved. No part of this work covered by the copyrights hereon may be reproduced or copied in any form Editorial comments should be sent to [email protected]. The content or by any means—graphic, electronic, or mechanical, including photocopy- of this journal is available online at www.thieme-connect.com/Products. ing, recording, taping, or information and retrieval systems—without written Visit our Web site at www.thieme.com and the direct link to this journal at permission of the publisher. www.thieme.com/djas. Dental Journal of Advance Studies is published 3 times a year in April, Typesetting: DiTech Process Solutions Pvt. Ltd. Mumbai, India August, and December by Thieme Medical and Scientific Publishers Private Printing and Binding: Avantika Printers Pvt. Ltd. Limited, A – 12, Second Floor, Sector – 2, Noida - 201301, Uttar Pradesh, India. Tel: +91-120-4556600, Fax: +91-120-455-6649. Printed in India Subscription: Open access journals available online for free at http://open. thieme.com. Advertisers contact: Marketing, Thieme Publishers Delhi, A-12, Second Floor, Sector -2, Noida-201301, Uttar Pradesh, [email protected]..