IP Annals of Prosthodontics and Restorative Dentistry 2022;8(3):157–160 Content available at: https://www.ipinnovative.com/open-access-journals IP Annals of Prosthodontics and Restorative Dentistry Journal homepage: https://www.aprd.in/ Case Report Functional restoration of mandibular second primary molar with missing successor: A case report Sana Fatima 1, *, Saima Yunus Khan 1 , Divya S. Sharma 1 , M.K. Jindal 1 , Faiza Jamil 1 1 Dept. of Pediatric and Preventive Dentistry, Dr. Ziauddin Ahmad Dental College & Hospital, Aligarh Muslim University, Aligarh, Uttar Pradesh, India ARTICLE INFO Article history: Received 23-05-2022 Accepted 06-06-2022 Available online 30-09-2022 Keywords: Primary second molar Mineral Trioxide Aggregate Missing successor ABSTRACT In case of missing permanent successor very often primary teeth may remain retained for longer time beyond their exfoliation schedule. This case report demonstrates the functional restorative management of a retained mandibular primary second molar with missing successor, treated with Mineral Trioxide Aggregate (MTA) as an obturating material. The material seemed to provide biocompatible sealing of the root canal. After six month follow up, the healing was uneventful without any functional and radiographic complications. This is an Open Access (OA) journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms. For reprints contact: reprint@ipinnovative.com 1. Introduction The retention of primary teeth beyond their normal exfoliation time could be due to many reasons. 1,2 Absence of permanent successor tooth bud is one of the common cause. Although the missing permanent third molar is the most prevalent missing tooth bud, but among missing successor teeth mandibular second premolars followed by maxillary lateral incisors, maxillary second premolars and mandibular incisors are most common ones. 1–3 The incidence of over-retained second primary molar due to congenitally missing second premolar tooth bud varies from 2.9-3.2%. 4 According to many studies, they constitute not less than 40% of all reported hypodontia cases with 1:1.37 male/ female ratio. 4,5 Management of such cases poses a challenging task for a dentist. Various treatment options are available that varies according to patient’s age and occlusion, restorability of tooth, and condition of the bone structure surrounding the teeth. Also these teeth are often more caries prone due to * Corresponding author. E-mail address: dr.sanafatima847@gmail.com (S. Fatima). longer retention time and the thinner enamel layer along with the high pulp horn that usually result in the early pulpal exposure. 5 Preservation of these teeth in functional state serves as a semi-permanent solution until the completion of face and the jaw growth which in turn is dependent on proprioception from intact periodontal ligaments. Root canal filling of these primary teeth requires obturation with the non-resorbable material to maintain hermetic sealing and roots without resorption. Traditionally gutta percha obturation has been practiced but the complex root canal anatomy of primary teeth compared to permanent teeth makes it difficult for a clinician to obturate the canal with the gutta percha. 5,6 This case report is about the endodontic management of mandibular second primary molar with congenitally missing successor where the obturation was done with MTA. 2. Case Report A 13 year old female patient reported to the Department of Pediatric and Preventive Dentistry, Dr. Ziauddin Ahmad Dental College and Hospital, AMU, Aligarh with the chief https://doi.org/10.18231/j.aprd.2022.031 2581-4796/© 2022 Innovative Publication, All rights reserved. 157