Abstract:
:External root resorption may occur as a consequence of trauma, orthodontic treatment, bacterial infection or incomplete sealing of the root canal system (bacterial re-infection), and lead to crater formation on the resorbed apex. This would deform the root apex surface, and cause loss of apical constriction. Depending on the extent of the resorptive process, different treatment regimens have been proposed. A 34-year-old male patient presented with an intra-radicular retainer and an inadequate filling on tooth #21, as well as a radiographic image suggesting periapical bone rarefaction. After root canal retreatment, the defect was accessed coronally. The resorption area was chemo-mechanically debrided and since the apical end was very wide, a calcium sulphate matrix was made. Mineral trioxide aggregate (MTA) was used to fill the resorptive defect, and the coronal access was temporarily sealed. After 24 h, the quality of the apical seal was evaluated with the aid of an operating microscope, and then the root canal system was filled. A 12-month follow-up radiograph showed adequate repair of the resorption. Clinically, the tooth was asymptomatic. We concluded that MTA can be successfully used to avoid overextension of the filling material when treating a tooth with external resorption.
journal_name
J Oral Scijournal_title
Journal of oral scienceauthors
Araújo RA,Silveira CF,Cunha RS,De Martin AS,Fontana CE,Bueno CEdoi
10.2334/josnusd.52.325subject
Has Abstractpub_date
2010-06-01 00:00:00pages
325-8issue
2eissn
1343-4934issn
1880-4926pii
JST.JSTAGE/josnusd/52.325journal_volume
52pub_type
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