Efficacy of XP-endo instruments in removing 54 month-aged root canal filling material from mandibular molars

To investigate the effectiveness of XP-endo Shaper (XPS) and XP-endo Finisher R (XPFR) instruments in removing aged root filling material from root-treated mandibular molars. Thirty mandibular molars were instrumented and divided into three groups: single-cone obturation using AH Plus sealer (AHS) o...

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Bibliographic Details
Published in:Journal of dentistry 2021-09, Vol.112, p.103734-103734, Article 103734
Main Authors: Liu, He, Lai, Wendy Wing Man, Hieawy, Ahmed, Gao, Yuan, Haapasalo, Markus, Tay, Franklin R., Shen, Ya
Format: Article
Language:English
Subjects:
Computed tomography
Condensates
Condensation
Dentistry
Endodontic retreatment
Endodontics
Fillers
Humidity
Mandible
Mechanical properties
Micro-computed tomography
Molars
Root canals
Root filling material
Sealing compounds
Teeth
Voids and gaps
XP-endo Finisher R
XP-endo Shaper
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Summary:To investigate the effectiveness of XP-endo Shaper (XPS) and XP-endo Finisher R (XPFR) instruments in removing aged root filling material from root-treated mandibular molars. Thirty mandibular molars were instrumented and divided into three groups: single-cone obturation using AH Plus sealer (AHS) or EndoSequence BC sealer (BCS), and warm vertical compaction using AH Plus sealer (AHW). The specimens were stored at 100% humidity and 37 °C for 54 months. Retreatment was performed using XPS and XPFR. Micro-computed tomography was used to scan the specimens after 54 months, after XPS retreatment and after the supplementary approach using XPFR. The XPS removed more filling material in the BCS and AHS groups, compared with the AHW group (P 
ISSN:0300-5712
1879-176X
DOI:10.1016/j.jdent.2021.103734