Evaluation of microleakage in class V composite restorations using dye penetration and micro-CT

Jacker‐Guhr, Silke; Ibarra, Gabriela; Oppermann, Leonard; Lührs, Anne‐Katrin; Rahman, Alexander; Geurtsen, Werner

doi:10.1007/s00784-015-1676-0

Cited by 21 publications

(19 citation statements)

References 38 publications

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“…4). The same conclusion was reached by Jacker-Guhr et al, 56 who suggested that to better utilize micro-CT, a new microleakage tracer which would distinguish well between dental tissue and materials would be necessary. Micro-CT is not yet an absolutely reliable method of assessing the marginal integrity of dental restorations.…”

Section: X-ray Microcomputed Tomography (Micro-ct)supporting

confidence: 53%

Advances in reducing microleakage in dental composites

Gong¹,

Zhang²,

Guo³

et al. 2019

Rev.Roum.Chim.

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The clinical success of esthetic restorations, including composite resins, depends on the quality and durability of the interface between the tooth and restoration. Current commercially available materials do not possess ideal sealing at the marginal interfaces, and marginal microleakage leads to clinically significant issues for patients and clinicians. Many factors may affect microleakage formation, including the adaptation of composite resins to the tooth surface, the adhesive system used, and the polymerization shrinkage of the materials. The evolution of restorative materials, designed to achieve low shrinkage and improve mechanical properties, could lead to restorations with improved clinical performance. Furthermore, searching for clinical techniques to optimize the integrity of resin/dentin bonds is significant, and the evaluation of microleakage is also critical to the assessment of restorative materials. The objective of this paper was to review the literature on the recent advances in restorative materials, the potential applications of clinical techniques, and the methods of measuring microleakage.

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Section: X-ray Microcomputed Tomography (Micro-ct)supporting

confidence: 53%

Advances in reducing microleakage in dental composites

Gong¹,

Zhang²,

Guo³

et al. 2019

Rev.Roum.Chim.

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“…Microfocus X-ray CT (μCT) uses a focused beam to provide higher resolution of smaller specimens in vitro 1) , which allows for high spatial resolution image recording of inner structures 2,3) . Nowadays, μCT is used in in vitro studies to evaluate the shrinkage of polymerized resin composites 4,5) , the interfacial void fraction in a resin composite material 6,7) , and the presence of marginal/ internal adaptation in restorations 8,9) .…”

Section: Introductionmentioning

confidence: 99%

Micro-CT assessment of comparative radiopacity of adhesive/composite materials in a cylindrical cavity

et al. 2018

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This study was performed to evaluate the comparative radiopacity of adhesive/resin composite materials in cylindrical cavities using micro-computed X-ray tomography (μCT). The two-step self-etch adhesive systems, Clearfil SE Bond (SE) and FL-Bond II (FL), and flowable resin composites, Beautifil Flow F10 (BF) and Clearfil Majesty ES Flow High (MJ), were used. The radiopacity of bovine tooth structures and restorative materials was measured by μCT. In addition, cylindrical cavities prepared in bovine teeth were restored with the following adhesive/composite combinations: SE-BF, SE-MJ, FL-BF, and FL-MJ. The mean gray values of the composite restorations were calculated. The threshold values of the μCT images were evaluated using the Otsu's thresholding method. The current results show that the comparative radiopacity of the materials and tooth structure varied, which affected distinguishing the μCT images of the composite restorations in the cylindrical cavity. The proper combination of restorative materials should be considered when conducting in vitro μCT assessments of composite restorations.

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“…These procedures are used to assess leakage rather than in vivo approaches, which can be qualitative and quantitative. 16 Many innovations in restorative materials have begun to appear on the dentistry market to improve the success rates of such materials. 17 Nanotechnology is defined as the use of numerous physical and chemical approaches to create materials and structures in the range of 0.1–100 nm.…”

Section: Discussionmentioning

confidence: 99%

Microleakage Evaluation in Class V Cavities Restored with Five Different Resin Composites: In vitro Dye Leakage Study

Bajabaa¹,

Balbaid²,

Taleb³

et al. 2021

CCIDE

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Purpose Restorative materials and techniques have improved the clinical success of a variety of restorative procedures. Despite these new improvements, microleakage remains one of the leading causes of restoration failure and may lead to postoperative sensitivity, enamel microcracks, marginal staining, discoloration, recurrent caries, and deformation of teeth. This study evaluated microleakages of five recent resin composites in class V cavities. Materials and Methods Standardized class V cavities were prepared on the labial surfaces of one hundred extracted intact and noncarious human permanent premolar teeth. The cavities were divided into five groups (n=20) according to the resin composite material. Groups: A1, A2, A3, A4 and A5 were restored with Omnichroma, Spectrum, Mosaic, Tetric N-Ceram and Harmonize, respectively. The teeth were stained with methylene blue and then sectioned, and the extent of dye penetration was examined under a stereomicroscope and scanning electron microscope (SEM) to evaluate microleakage. One-way ANOVA test was used to statistically analyze the data. Statistical Package for Social Sciences Computer Software (SPSS) version 15.0 was used. Results Dye penetration was observed at the tooth-restoration interface in all the studied samples, with varying degrees of penetration. At the cervical margins of the cavities, no statistically significant difference in the microleakage scores was observed (P=0.16). At the cavity floor, no statistically significant difference in microleakage scores was observed (P=0.74). Omnichroma resin composite had the highest microleakage results. Conclusion Nanohybrid resin composites showed less microleakage than other resin composites. Among all the groups, Omnichroma showed the highest microleakage at the cavity floor and at the cervical areas. Clinical Significance In light of our findings, nanohybrid resin composites appear to be capable of reducing microleakage, and the results reported herein must be verified by additional clinical trials.

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Evaluation of microleakage in class V composite restorations using dye penetration and micro-CT

Abstract: The micro-CT is not yet a vulnerable tool to evaluate the marginal integrity of resin composites.

Cited by 21 publications

References 38 publications

Advances in reducing microleakage in dental composites

Advances in reducing microleakage in dental composites

Micro-CT assessment of comparative radiopacity of adhesive/composite materials in a cylindrical cavity

Microleakage Evaluation in Class V Cavities Restored with Five Different Resin Composites: In vitro Dye Leakage Study

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