Coronectomy of partially erupted lower third molars performed by an undergraduate dentistry student: a case series
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ORIGINAL ARTICLE
Coronectomy of partially erupted lower third molars performed by an undergraduate dentistry student: a case series Polianne Alves Mendes 1 & Isabela Moreira Neiva 1 & José Alcides Almeida de Arruda 1 & Cláudia Borges Brasileiro 1 & Ana Cristina Rodrigues Antunes Souza 2 & Ricardo Alves Mesquita 1 & Leandro Napier Souza 1 Received: 24 February 2020 / Accepted: 29 May 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Purpose The coronectomy technique is an alternative to conventional impacted tooth removal which aims to reduce the risk of damage to the inferior alveolar nerve (IAN). The technique is usually performed by senior oral surgeons or residents in training. Herein, patients were treated in a single service, in which coronectomy was performed by an undergraduate dental student on partially erupted lower third molars. Methods A prospective analysis was performed on 21 individuals submitted to a total of 35 coronectomies. Clinical and radiographic follow-up was performed for at least 12 months. Results Overall, healing was within normal limits, without major complications and without permanent IAN injury. However, one case showed temporary IAN paraesthesia resolved within a month and two required repetitions of coronectomy due to the remaining enamel, but with a good final result. Root migration was observed in all cases, but no other surgery was required. Conclusion Coronectomy may be an important option for treating partially erupted teeth in close nerve relationships, which could also be performed by trained undergraduate dental students. This series is interesting because it can encourage oral and maxillofacial surgeons to train undergraduate students and to stimulate their attraction and passion for surgery. Keywords Coronectomy . Impacted tooth . Oral surgery . Third molar
Introduction Impacted lower third molars are common and may be associated with the development of pathologies [1, 2]. A recent meta-analysis of 49 studies involving 83,484 individuals reported a worldwide third molar impaction rate of 24.4% [3]. These teeth can usually be managed by extraction, taking into account a good risk-benefit ratio [4]. The close relationship of their roots with the inferior alveolar nerve (IAN) may cause damage during surgical removal and consequently temporary or permanent nerve injury [5]. In 1984, Ecuyer and Debien [6] * Leandro Napier Souza [email protected]; [email protected] 1
Department of Oral Surgery, Pathology and Clinical Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos, 6627, room 3331, Pampulha, Belo Horizonte, Minas Gerais 31270-901, Brazil
2
Department of Dentistry, School of Dentistry, Centro Universitário Newton Paiva, Belo Horizonte, Minas Gerais, Brazil
described coronectomy as an alternative to complete extraction of the lower third molars in close proximity to the IAN. Coronectomy is an efficient and safe alternative, with a significant reduction in nerve risk [7, 8] and minor posto
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