Journal of Conservative Dentistry
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Year : 2022  |  Volume : 25  |  Issue : 1  |  Page : 105-108

Cyclic and spontaneous movement of a fractured and extruded instrument back into the root canal: A rare case report

1 Department of Conservative and Endodontics, K. M Shah Dental College and Hospital, Munjmahuda, Vadodara, Gujarat, India
2 Department of Conservative and Endodontics, Manubhai Patel Dental College and Dental Hospital, Munjmahuda, Vadodara, Gujarat, India

Correspondence Address:
Dr. Anoli Jagdishbhai Hirani
Department of Conservative and Endodontics, K. M Shah Dental College and Hospital, Piparia, Vadodara - 391 760, Gujarat
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jcd.jcd_303_21

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Retreatment of endodontically involved teeth may require the removal of obstruction from root canal space. Instrument fracture is an undesirable and stressful incident which can negatively affect the prognosis of the tooth. Any corrective step taken should be performed with utmost care to prevent extrusion of the fragment into periapex. This case report describes a rare occurrence of movement of a fractured instrument during inter-appointment period. A previously treated left mandibular first molar with a fractured instrument was taken up for retreatment. During the course of treatment, the fractured fragment which was previously located in the apical third of the distal canal was dislodged into the periapical region. However, it was found that fragment moved back inside the canal after the inter-appointment period. The same sequence of events repeated before the instrument could be retrieved. Hydrostatic and vascular pressure build due to periapical inflammation could be cited reasons for such a movement.

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