Effect of Solvent Use on Dentinal Integrity and Filling Removal During Endodontic Retreatment: A Micro-Computed Tomography Study

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dc.contributor.authorZümrütel, Pelin
dc.contributor.authorHaznedaroğlu, Faruk
dc.contributor.authorKeleş, Ali
dc.contributor.authorBasmacı, Gülsüm Kutlu
dc.date.accessioned2026-10-23T13:36:22Z
dc.date.available2026-10-23T13:36:22Z
dc.date.issued2026
dc.departmentFakülteler, Diş Hekimliği Fakültesi, Klinik Bilimler Bölümü
dc.description.abstractIntroduction: This study evaluated, using micro-computed tomography (micro-CT), whether solvent use during endodontic retreatment influences dentinal defect formation and the removal of filling material compared with mechanical retreatment alone. Materials and methods: Twenty extracted human mandibular molars were prepared and obturated using standardized protocols and randomly allocated to solvent-assisted retreatment or retreatment without solvent (n=10 per group). Micro-CT scans were obtained before treatment, after obturation, and after retreatment at a voxel size of 13.68 μm. Dentinal defects were assessed using axial images, and residual filling-material volume was measured three-dimensionally in the apical, middle, and coronal thirds. Between-group comparisons were performed using the Welch independent-samples t-test or Mann-Whitney U test, as appropriate. Within-group comparisons were performed using the Friedman test. Results: No dentinal defects were detected in any specimen (0/20). However, the exact 95% confidence interval indicated that a low-incidence effect could not be excluded. Residual filling material was detected in all canals after retreatment. No significant differences were observed between the solvent-assisted and non-solvent groups in residual filling-material volume at any canal third after adjustment for multiple comparisons (all adjusted P>0.05). Conclusions: Under the conditions of this in vitro study, solvent use did not significantly improve filling-material removal compared with mechanical retreatment alone. No dentinal defects were detected in either group; however, the exploratory nature and limited sample size of the dentinal-defect analysis preclude excluding a low-incidence effect.
dc.identifier.citationZümrütel, P., Haznedaroğlu, F., Keleş, A., & Kutlu Basmacı, G. (2026). Effect of solvent use on dentinal integrity and filling removal during endodontic retreatment: A micro-computed tomography study. Iranian Endodontic Journal, 21(1), Article e33.
dc.identifier.doi10.22037/iej.v21i1.52809
dc.identifier.pmid42846954
dc.identifier.urihttps://hdl.handle.net/20.500.12941/473
dc.indekslendigikaynakPubMed
dc.institutionauthorZümrütel, Pelin
dc.institutionauthorHaznedaroğlu, Faruk
dc.language.isoen
dc.relation.ispartofIranian Endodontic Journal
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectDentinal Defects
dc.subjectEndodontic Retreatment
dc.subjectGutta-Percha
dc.subjectMicro-computed Tomography
dc.subjectResidual Filling Material
dc.subjectSolvent
dc.titleEffect of Solvent Use on Dentinal Integrity and Filling Removal During Endodontic Retreatment: A Micro-Computed Tomography Study
dc.typeArticle

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