Sealing Ability of Resilon as a Root Canal Filling Material: A Systematic Review of In Vitro Studies
Keywords:
Root Canal Filling Materials, In Vitro Techniques, Endodontics, Endodontic ObturationAbstract
Objective: This systematic review aimed to evaluate the coronal and apical sealing ability of Resilon, a thermoplastic synthetic root canal filling material, compared to gutta-percha under in vitro conditions.
Methods: Following PRISMA-2020 guidelines, a comprehensive search was conducted across four databases (PubMed, Scopus, Web of Science, and Cochrane Library) without restrictions on language or publication date. Although both clinical and in vitro studies were deemed eligible, no clinical studies meeting the inclusion criteria were identified during the literature search. As a result, the final synthesis included exclusively in vitro investigations. Twenty-seven in vitro studies were included after duplicate removal, screening, and eligibility assessment. Two reviewers performed data extraction and risk of bias appraisal independently.
Results: Findings showed that Resilon exhibited superior sealing ability in 17 studies, particularly in terms of reduced microleakage and better adaptation to canal walls, especially when used with methacrylate-based sealers. However, seven studies reported no significant differences between Resilon and gutta-percha, and three studies showed inferior sealing with Resilon, especially in long-term storage or under adverse conditions. Risk of bias analysis revealed methodological concerns in several studies, particularly regarding confounding and outcome measurement. The results suggest that while Resilon may offers short-term advantages in controlled settings, its sealing capacity may decline over time, raising questions about its long-term reliability.
Conclusion: Overall, the evidence supports the potential use of Resilon in specific scenarios where immediate sealing is critical, but further standardized research and clinical trials are necessary to validate its long-term effectiveness and biocompatibility.
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