Alves Fabio-Abreu, Serpa Marianna-Sampaio, Delgado-Azañero Wilson, de Almeida Oslei-Paes
DDS, PhD, Head of Stomatology Department, A. C. Camargo Cancer Center, São Paulo, Brazil. Professor of the Department of Stomatology, University of São Paulo, School of Dentistry, São Paulo, Brazil.
DDS, MSc, PhD student, Department of Stomatology, A. C. Camargo Cancer Center, São Paulo, Brazil.
J Clin Exp Dent. 2018 Oct 1;10(10):e992-e995. doi: 10.4317/jced.55231. eCollection 2018 Oct.
Coronectomy involves the section of the tooth crown leaving the roots in the socket. Possibility of inferior alveolar nerve injury and mandibular fracture are the main indications for this approach. Herein, we describe a case series of coronectomy to highlight its indication in normal and oncological patients.
A total of 9 patients were submitted to coronectomy, 6 of them were oncological. Three patients were evaluated before head and neck radiotherapy (HNRT), 2 after HNRT and 1 before bone marrow transplantation.
Mean age of the patients was 49 years, most of them male (n=7). Lower third molars were the main teeth that received this procedure, and all cases presented intimate anatomic relationship between the roots and the mandibular canal. Moreover, three cases also presented evident mandibular fracture risk in removing the tooth. During the follow-up period, none complications were observed related to coronectomy and oncological treatment.
Coronectomy is a safe approach including for cancer patients and it should be considered in high-risk impacted teeth extractions. Coronectomy, impacted teeth, oncological patients, postoperative complications.
冠切除术是指将牙冠部分切除而保留牙根于牙槽窝内。下牙槽神经损伤和下颌骨骨折的可能性是该手术方式的主要适应证。在此，我们描述一系列冠切除术病例，以突出其在普通患者和肿瘤患者中的适应证。
共有9例患者接受了冠切除术，其中6例为肿瘤患者。3例患者在头颈部放疗（HNRT）前接受评估，2例在HNRT后接受评估，1例在骨髓移植前接受评估。
患者的平均年龄为49岁，大多数为男性（n = 7）。下颌第三磨牙是接受该手术的主要牙齿，所有病例的牙根与下颌管之间均存在紧密的解剖关系。此外，3例在拔牙时还存在明显的下颌骨骨折风险。在随访期间，未观察到与冠切除术和肿瘤治疗相关的并发症。
冠切除术是一种安全的手术方式，包括对癌症患者，在高危阻生牙拔除时应予以考虑。冠切除术、阻生牙、肿瘤患者、术后并发症。
