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Imaging Sci Dent. 2017 Mar;47(1):63-68. English. Case Report.
Villalobos MI , Leite TC , Barra SG , Werneche DT , Manzi FR , Cardoso CA .
Department of Dentistry, Pontificial Catholic University of Minas Gerais, Belo Horizonte, Brazil.

Some complications can arise with the usage of local anesthesia for dental procedures, including the fracture of needles in the patient. This is a rare incident, usually caused by the patient's sudden movements during anesthetic block. Its complications are not common, but can include pain, trismus, inflammation in the region, difficulty in swallowing, and migration of the object, which is the least common but has the ability to cause more serious damage to the patient. This report describes a case in which, after the fracture of the anesthetic needle used during alveolar nerve block for exodontia of the left mandibular third molar, the fragment moved significantly in the first 2 months, before stabilizing after the third month of radiographic monitoring.

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