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Root canal retreatment of an upper left lateral incisor following fracture of an old crown. (The adjacent central incisor #9 will need to be extracted due to apical fracture). 1) Tooth #10 (upper left lateral) canal widened with an endodontic file. Old gutta percha removed using Chloroform solvent. A rubber dam clamp and rubber dam in place on the tooth to maintain sterility. 2) Radiograph of an endo file marker used to measure vertical depth of root canal to apex. The prior gutta percha was not obturated to the canal apex and the gutta percha had been left exposed to saliva after the crown fracture. 3) Root canal filled with new gutta percha, temporary crown and temporary post re-inserted. 4) Post-op radiograph showing the obturated root canal and post space in preparation for a cast gold post and core impression. |
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Endodontic (root canal) retreatment of tooth #29 and treatment of #28. The five-unit bridge had cement leakage and the abutments decayed after only 1 and 1/2 years. The patient said that #29 was always sensitive after the original root canal was performed by her then general dentist. Retreatment of #29 by an endodontist (root canal specialist) revealed a second, previously undiagnosed and untreated second canal. A post space was created in this second canal after obturation. |
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Tooth #13 has been left exposed for over a year since the root canal temporary filling fell out. 1. Current x-ray. 2. Buccal view. 3. Palatal view. 4. Occlusal view. Treatment options: Extraction and then tooth replacement or retreat the root canal, post and core, crown lengthening gum surgery and crown. |
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Comparison of the initial and final radiograph of root canal retreatment of a maxillary second premolar. The root canal filling material does not reach the apex of the tooth root in the initial x-ray but now does in the final radiograph. |
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Root canal retreatment. 1) Endodontic access is attained after removing old filling material. 2) The measurement file is placed. 3) The measurement radiograph shows the file reaching the apex of the tooth root. This gives an accurate measurement of the canal length. 4) The canal is filled with gutta percha.
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