Obturation Over an S1 ProTaper Instrument Fragment in a Mandibular Molar with Three Years of Follow-up

Abstract

This paper describes root canal filling performed over a large S1 ProTaper file fragment in a second mandibular molar with irreversible pulpitis. An S1 ProTaper file was fractured during the instrumentation of the mesiobuccal canal. Approximately 10 mm of file fragment remained in the apical and middle thirds of the canal. The obturation was performed over this fragment using thermomechanically compacted gutta-percha and sealer. Radiographic findings and the absence of clinical signs and symptoms at 3-year follow up indicated successful treatment. Cone-beam computed tomography images revealed absence of periapical lesion and details of intracanal file fragment related to root fillings and apex morphology. In this case, the presence of a large intracanal fractured instrument did not have a negative impact on the endodontic prognosis during the follow up evaluation period.

Instrumentação reciprocante em canal mésiovestibular de molar superior após fratura de lima endodôntica

“…Segundo Brito-Júnior et al 19 (2014), após fratura intracanal de um instrumento endodôntico, o profissional pode optar por remover o fragmento do instrumento, preencher o canal sobre o fragmento fraturado ou contorná-lo. Nesse caso, optou-se por contornar o fragmento fraturado, para evitar desgaste excessivo das paredes de dentina radicular em decorrência da fragilidade e do risco de fratura que uma possível remoção pudesse ocasionar.…”