ArticleBMC oral health2025
The ability of highly-filled flowable composites in preventing marginal gap in class V restorations: an optical coherence tomography study.
Article in BMC oral health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Clinical performance and cost-effectiveness of low-shrinkage giomer resin composite versus resin-modified glass ionomer in cervical carious lesions: a 12-month randomized controlled trial.BMC oral health · 2025Trial
- Effects of energy drinks on flexural and optical properties of conventional and bulk-fill resin composites: an in vitro swept-source optical coherence tomography (SS-OCT) study.BMC oral health · 2026Article
- Micro-CT evaluation of internal adaptation in composite restorations using incremental and sonic-activated techniques.Bioinformation · 2026Article
- The influence of bruxism on post orthodontic direct anterior restorations integrity: a retrospective evaluation.Frontiers in oral health · 2026Article
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9 authors.
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Abstract
backgroundDespite improvements in adhesive systems and restorative materials, interfacial gap opening and subsequent microleakage are major factors in the failure of resin-based composite (RBC) restorations. This study evaluated the marginal gap in class V restorations using two highly-filled flowable RBC with varying viscosities, both before and after aging process.
methodsStandardized class V cavities were created on the buccal side of intact single-root human upper premolars (n = 48). Specimens were randomly divided into three groups (n = 16) considering the selected restorative materials: a nanohybrid packable RBC serving as a control group (G1, Clearfil Majesty ES2, Kuraray Noritake) and two highly-filled RBCs with different viscosities (G2, Majesty ES Low Flow, Kuraray Noritake; G3, Majesty ES Super Low Flow, Kuraray Noritake). The initial marginal adaptation, both at the enamel and dentin substrate, was evaluated using optical coherence tomography (OCT). Specimens were then divided into two subgroups (n = 8) according to the aging process performed: thermocycling (TC) and thermomechanical cycling (TMC). After TC and TMC specimens were scanned again with OCT to evaluate margin degradation. Using a dedicated program, 2D cross-sectional images were obtained and the images were processed and quantitatively analyzed using Image J software. The interfacial gap between tooth and composite was linearly measured at baseline and after aging. A three-way analysis of variance (ANOVA) and a post-hoc Tuckey test were used to statistically analyze the data (Stata 17.0 software package).
resultsANOVA statistics regarding baseline and post aging results indicated that the employed material and the substrate were influent on interfacial gap (p ≤ 0.05). The ANOVA test also showed that TMC induce significantly higher gap opening than the TC. G2 (Majesty ES Low Flow) performed significantly better than G1 (Clearfil Majesty ES2) and G3 (Majesty ES Super Low Flow) at baseline and then G1(Clearfil Majesty ES2) after the aging process in terms of interfacial adaptation. Dentin showed significantly lower adaptation at both the baseline and post aging process. Moreover, the thermomechanical cycling induced a significantly higher gap opening than the thermocycling alone.
conclusionHighly-filled flowable RBC showed promising results in terms of interfacial gap adaptation both at the baseline and after the aging process. The presence of a cervical substrate and the mechanical aging worsen the marginal adaptation.
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