Micro-computerized tomography analysis of cement voids and pull-out strength of glass fiber posts luted with self-adhesive and glass-ionomer cements in the root canal

Sarıdağ, Serkan; Helvacıoğlu-Yiğit, Dilek; Özcan, Mutlu; Avcu, Egemen; Kızıltaş, Güllü

doi:10.1080/01694243.2016.1155911

Cited by 7 publications

(3 citation statements)

References 31 publications

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“…Therefore, it is possible to obtain nondestructive and reproducible images. Micro‐CT devices produce 3D images of dentin thickness, root canal filling material volume, prepared canal anatomy, and the post/dentin/cement interface without damaging the tooth (Sarıdağ, Helvacıoğlu‐Yiğit, Özcan, Avcu, & Kızıltaş, ; Swain & Xue, ).…”

Section: Introductionmentioning

confidence: 99%

Comparison of the efficacies of two different fiber post‐removal systems: A micro‐computed tomography study

Arukaslan

Aydemir

2018

Microscopy Res & Technique

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The aim of this in vitro study was to compare the efficacies of two different fiber post‐removal systems. Thirty extracted single‐rooted mandibular premolar teeth were used. After RelyX fiber posts were cemented, the teeth were divided into two groups with regard to the post removal techniques: ultrasonic vibration and D.T. Light‐Post removal kit. Residual material, tooth volume changes, working time and micro‐crack formation were assessed using micro‐computed tomography. All data were analyzed using Wilcoxon signed‐rank and Mann–Whitney U tests. There was significantly more tooth root volume change in the ultrasonic group than removal kit group (p < .05). Fiber post removal time for the ultrasonic group was significantly longer than the removal kit group (p < .01).

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Section: Introductionmentioning

confidence: 99%

Comparison of the efficacies of two different fiber post‐removal systems: A micro‐computed tomography study

Arukaslan

Aydemir

2018

Microscopy Res & Technique

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“…Void formation may result from air entrapment or as a result of polymerization shrinkage deformity (ArRejaie et al, 2019). On the other hand, in this study, injection of capsulated resin cement was done using an elongation tip, which regardless of the fibre post type results in lower void volumes compared to the lentulo‐spiral application (Sarıdağ et al, 2016). The composition of the resin matrix may contribute to the lower void volumes of the experimental posts over the everStick posts, as the experimental posts are composed of bis ‐GMA and UDMA, whilst the everStick resin matrix is composed of PMMA and bis ‐GMA.…”

Section: Discussionmentioning

confidence: 93%

A laboratory study to assess the physical, mechanical, and 3‐D structural properties of nano‐apatite grafted glass fibre‐based endodontic posts

et al. 2021

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Aim To fabricate and characterize nano‐hydroxyapatite (nHA) grafted and non‐grafted glass fibre‐based endodontic posts. Methodology Experimental glass fibre posts were fabricated using silanized nHA grafted (ex‐HA) and non‐grafted glass fibre (ex‐P) reinforced resins. The structural analysis and morphological patterns were analysed with Fourier transform infrared spectroscopy and scanning electron microscopy, respectively. EverStick® glass fibre posts (eS) were used as a control group. The degree of conversion, flexural strength, and flexural modulus was investigated and the fractured structure was evaluated with a scanning electron microscope. Root canals were prepared in human extracted teeth restored with experimental and control posts. The push‐out bond strength was evaluated with radicular dentine at days 7, 30, and 90, and the presence of voids at the interface were measured at day 1, 7, 30, and 90 with micro‐computed tomography. The Shapiro–Wilk test and one‐way ANOVA post‐hoc Tukey's test were performed. The level of significance was set at 0.05. Results The SEM and FTIR confirmed the presence of a silane‐coupling agent on the glass fibres. The ex‐HA post had a significantly lower degree of conversion compared to the ex‐P post (p = .0008), but a significantly higher conversion than the eS post (p = .0014). The maximum flexural strength value was obtained with the ex‐HA post with an insignificant difference (p = .366) compared to ex‐P post and a significant difference (p = .029) compared to the eS post. The flexural modulus of ex‐HA, ex‐P, and eS posts were significantly different (p = .037). Similarly, the ex‐HA post had a significantly higher push‐out bond strength at days 7 and 30 (p = .037) compared to the ex‐P and eS posts. The volume of voids had a nonlinear behaviour amongst the groups with no significant difference between the posts. Conclusion The fabrication of the experimental posts was successful and the ex‐HA post had greater flexural strength and push‐out bond strength compared to the ex‐P post. The degree of conversion of the ex‐HA post was lower than the ex‐P and eS posts. The volume of voids of ex‐HA and ex‐P posts was lower than that of eS posts.

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“…The teeth were reconstructed using NRecon (version 1.6.9.4) software, which uses a modified Feldkamp's back-projection. The 3D reconstructions, containing grayscale values for each voxel (3D pixel), were segmented (binarized) using the peak-valley method and analyzed on a CT-An (CT-Analyser, version 1.14.4.1) (20).…”

Section: Methodsmentioning

confidence: 99%

Evaluation of Fracture Strength and Total Void Amount in Composite Restorations on Endodontically Treated Teeth

Tekçe

Aydemir

Demırcı

et al. 2021

Odovtos - Int J Dent Sc

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Objective: The aim of the study was to investigate the fracture strength of different composite resins and the quantity of voids in conventional posterior composite, high-flow flowable composite, bulk-fill flowable composite, and fiber-reinforced composite. Materials and Methods: Forty-four caries-free, freshly extracted mandibular premolars were used for this study. Teeth were prepared for cavity and root canal treatment. Subsequently, root canal treatment was applied to the teeth and cavities in order to prepare them for restorations. The specimens were then divided into four groups: group-1: Estelite Posterior; group-2: Estelite Flow Quick High Flow; group-3: Estelite Bulk-fill Flow; group-4: everX Posterior. One specimen from each experimental group was examined using micro-CT to perform measurement of voids. Results: The fracture strength values of high-flow flowable, bulk-fill flowable, fiber-reinforced, and conventional micro-hybrid composites were found to be similar (p=0.497). EverX Posterior showed the highest fracture strength values (841.1±149.4 N), followed by Estelite Bulk-fill Flow (822.8±170.8 N). Conclusion: Volume of voids (%) obtained from Micro-CT analysis revealed that restorations with high-flow liner or bulk-fill flowable exhibited more voids. The fiber-reinforced composite showed the lowest percentage volume of incorporating voids and the highest fracture strength results.

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Micro-computerized tomography analysis of cement voids and pull-out strength of glass fiber posts luted with self-adhesive and glass-ionomer cements in the root canal

Cited by 7 publications

References 31 publications

Comparison of the efficacies of two different fiber post‐removal systems: A micro‐computed tomography study

Comparison of the efficacies of two different fiber post‐removal systems: A micro‐computed tomography study

A laboratory study to assess the physical, mechanical, and 3‐D structural properties of nano‐apatite grafted glass fibre‐based endodontic posts

Evaluation of Fracture Strength and Total Void Amount in Composite Restorations on Endodontically Treated Teeth

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