Abstract
ABSTRACT The present case report describes a modified technique of coronectomy for mandibular third molar with association of Platelet-Rich Fibrin Graft (PRF). The panoramic radiograph showed proximity of the roots of the vertical positioned 48 tooth with the superior wall of the mandibular canal, since the erasure of the superior cortical of the mandibular canal was observed. Due to the risk of injury to the inferior alveolar nerve, the technique of coronectomy was chosen. After the realized the coronectomy, in order to promote the regeneration of soft and hard tissues and also to prevent pulp changes that could lead to pain, pulp necrosis and infection, the PRF graft was used to fill the surgical defect formed by removal of the crown. Good healing evolution was observed and after 12 months of clinical and radiographic follow-up there was complete bone formation in the area where the crown was removed and no complications were observed.
Highlights
The extraction of impacted third molars is one of the most common oral surgical procedures due to the complications that this situation can cause, such as: caries, pericoronitis, periodontal disease [1]
Due to the morbidity caused by injury to the inferior alveolar nerve, it is very important to consider the risks and benefits of the surgical procedure in the preoperative planning, so that the patient is treated in the best possible way and the risk of nerve damage is reduced [4]
It is important to note that coronectomy or “intentional retention root”, which consists of removing only the crown of the tooth and keeping the root intact, is an alternative procedure to complete extraction of the tooth
Summary
The extraction of impacted third molars is one of the most common oral surgical procedures due to the complications that this situation can cause, such as: caries, pericoronitis, periodontal disease [1]. Due to the morbidity caused by injury to the inferior alveolar nerve, it is very important to consider the risks and benefits of the surgical procedure in the preoperative planning, so that the patient is treated in the best possible way and the risk of nerve damage is reduced [4] In this context, it is important to note that coronectomy or “intentional retention root”, which consists of removing only the crown of the tooth and keeping the root intact, is an alternative procedure to complete extraction of the tooth. It is important to note that coronectomy or “intentional retention root”, which consists of removing only the crown of the tooth and keeping the root intact, is an alternative procedure to complete extraction of the tooth This procedure is especially interesting in cases of third molars that have direct contact with the mandibular canal [4,5,6]. After removal of the crown of 48, without any type of dental dislocation, the PRF obtained
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