Evaluation of fracture resistance and crack propensity of bulk-fill composite restorations reinforced by polyethylene fiber

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dc.authorid0000-0003-3542-4877
dc.authorid0000-0002-9220-8671
dc.authorid0000-0003-3121-360X
dc.contributor.authorSenol, Ayse Asli
dc.contributor.authorManav, Aybike
dc.contributor.authorDogu Kaya, Bengu
dc.contributor.authorYilmaz Atali, Pinar
dc.contributor.authorKahramanoglu, Erkut
dc.contributor.authorTarcin, Bilge
dc.contributor.authorTurkmen, Cafer
dc.date.accessioned2026-02-03T12:00:28Z
dc.date.available2026-02-03T12:00:28Z
dc.date.issued2025
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractBackground In clinical restorative applications, different materials and techniques are used to replace lost tooth tissue and compensate for the fracture resistance that are essential for function. Further investigation is required to ascertain the effect of polyethylene fiber application, which is one of these interventions, on the fracture resistance, fracture location, reparability and crack propagation of premolar teeth restored with direct composite resin restorations. This in-vitro study aimed to evaluate fracture resistance and crack propagation of two bulk-fill composites (BRC) with/without polyethylene-fiber in extensive Class I resin composite restorations. Methods Cavities were prepared on 40 mandibular premolars. In half of the samples (n = 20), polyethylene-fiber (Ribbond Fiber/RF) coated with adhesive resin was placed on cavity floor. Half of the teeth were restored with SonicFill 3 and the other half with Charisma Bulk Flow ONE.The groups were as follows: SonicFill 3 + Fiber(SF + RF), SonicFill 3(SF), Charisma Bulk Flow ONE + Fiber(CO + RF), and Charisma Bulk Flow ONE(CO). Following 20,000 thermo-cycles fracture resistance (FR) was determined. Crack number/orientation were assessed with transillumination using two different wavelengths, before (t(0)) and after preparation (t(p)), and following fracture test (t(f)).Visual examination was performed with micro-CTto evaluate the adaptation. Data were analyzed using Independent samplesT-test, Fisher's Exact, Fisher Freeman Halton, Pearson Chi-Square and Cochran's QTests (P < .05). Results No statistically significant difference was found between the FR of groups (P = .994) with and without RF (P = .167) according to BRC. The mean FR values in decreasing order were CO (761.09 +/- 224.32) > SF + RF (671.08 +/- 150.51) > CO + RF (669.95 +/- 358.44) > SF (580.7 +/- 269.04). A reduction in the formation of irreparable fracture patterns was detected in RF groups. Crack number/orientation did not differ according to BRC and RF application. Statistically significant increase was observed in crack formation over examination periods (t(f)> t(p)> t(0); P < .001). Conclusions The reinforcement of large cavities with polyethylene fibers changed the fracture pattern of the restorations towards repairable, whereas had no effect on fracture resistance and crack formation. Furthermore, the placement of polyethylene fibers may have an adverse effect on the adaptation of the cavity. In clinical applications, both wavelengths can be used for transillumination testing in crack inspection.
dc.identifier.doi10.1186/s12903-025-07297-0
dc.identifier.issn1472-6831
dc.identifier.issue1
dc.identifier.pmid41327127
dc.identifier.scopus2-s2.0-105026887338
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1186/s12903-025-07297-0
dc.identifier.urihttps://hdl.handle.net/20.500.12428/34625
dc.identifier.volume26
dc.identifier.wosWOS:001655341800002
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherBmc
dc.relation.ispartofBmc Oral Health
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20260130
dc.subjectCrack propensity
dc.subjectMicro-CT
dc.subjectPolyethylene fiber
dc.subjectSonic-activated bulk-fill
dc.subjectTransillumination
dc.titleEvaluation of fracture resistance and crack propensity of bulk-fill composite restorations reinforced by polyethylene fiber
dc.typeArticle

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