The use of micro-computed tomography in dental applications

Erpaçal, Begüm; Adıgüzel, Özkan; Cangül, Suzan

doi:10.5577/intdentres.2019.vol9.no2.7

Cited by 18 publications

(23 citation statements)

References 23 publications

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“…Specific studies are devoted to profilometer-based approach [28] and advanced micro computed tomography [29], owing to the fact that hard X-ray allow for the isotropic spatial resolution in three-dimensional space. These methods can improve possibilities of the assessment of implants and surrounding bones, to determine mineral concentration in the teeth and to estimate the thickness of enamel.…”

Section: Discussionmentioning

confidence: 99%

Surface Morphology of Three-Dimensionally Printed Replicas of Upper Dental Arches

et al. 2020

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The aim of our study was to analyze the precision of fused-deposition modeling (FDM), polyjet technology (PJ), stereolithography (SLA) and selective laser sintering (SLS) and to evaluate some interesting indications of these methods in clinical practice. Forty upper dental arches were scanned using a 3Shape Trios 3R optical scanner system and 3D models were made. An Atos II 400 optical 3D scanner was used for calculating the coordinates of points by optical triangulation, photogrammetry and fringe projection. Each model was scanned from a minimum of 56 positions to evaluate global coordinates. Surface morphology was evaluated with an Alpha Step IQ profilometer and a JSM 5510 LV scanning electron microscope. From the measurements in cross-sections it was evident that the deviation shifted by approximately 0.1 mm. The smoothest and most homogeneous sample was SLA. SLS and SLA samples showed the most similar results in comparison of perpendicular directions (homogeneity). FDM and PJ materials exhibited significantly greater roughness in the printing direction than in the perpendicular one, which is most likely caused by the technology selected and/or print parameters. Clinical applications have demonstrated unusual treatment options for patients with rare diseases.

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Section: Discussionmentioning

confidence: 99%

Surface Morphology of Three-Dimensionally Printed Replicas of Upper Dental Arches

et al. 2020

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“…In addition, micro-computed tomography (micro-CT) and cone-beam computed tomography (CBCT) have been widely used as imaging tools for dental applications. Additionally, micro-CT and CBCT are utilized in dentistry and orthodontics applications for the apprehension of structure [ 16 , 17 , 18 , 19 , 20 ]. However, these two imaging tools have several issues of limitation and liability.…”

Section: Introductionmentioning

confidence: 99%

Non-Invasive Optical Coherence Tomography Data-Based Quantitative Algorithm for the Assessment of Residual Adhesive on Bracket-Removed Dental Surface

Kim

Jung

Jeon

et al. 2021

Sensors

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The aim of this study was to quantitatively assess the residual adhesive on orthodontic ceramic bracket-removed dental surface. In orthodontic process, ceramic bracket was repeated debonding physically, then the adhesive remained on the dental surface. The residual adhesive caused a lack of adhesive strength between dental and ceramic bracket. Since commonly used adhesive in orthodontics is translucent, residual adhesive is hard to be detected with conventional microscopes. Therefore, 1310 nm center wavelength swept-source OCT system based on laboratory customized image processing algorithm was used for the precise detection of residual adhesive on tooth surface. The algorithm separates residual adhesive from dental surface by comparing the height of adjacent B-scan images, while providing color-scaled images emphasizing the thickness information of residual adhesive. Finally, the acquired results were compared with microscopic and adhesive remnant index scoring gold standards, while the comparison confirmed the potential merits and the improvements of the proposed method over gold standards.

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“…The imaging procedure can be easily repeated, or changes can be made on the image using special software. This method allows the imaging of the material together with mineralized tissues (20). Therefore, the microleakage and gap that occurs between the tooth and the composite resin after polymerization can be successfully revealed using µCT (21).…”

Section: Introductionmentioning

confidence: 99%

A micro-computed tomography evaluation of the change in volume of different bulk-fill composite materials caused by polymerization shrinkage

et al. 2021

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Aim: Composite resins contain different monomers and fillers that are directly affected by polymerization shrinkage. Therefore, an accurate and reliable method is needed to measure the volume changes. The aim of this study was to evaluate the amount of volume change associated with polymerization shrinkage in four different bulk-fill composite materials in class II restorations using a micro-CT device, which has high resolution and provides 3-dimensional images. Methodology: A total of 40 human 3rd molar teeth were used. First, standard class II cavities were opened on the mesial surfaces of all the teeth, and then the first micro-CT images were obtained. The same adhesive material was applied to all the teeth. The teeth were then separated into four groups, and a different bulk-fill composite was applied to each group; Filtek (FTK), X-tra Fil (XTF), Tetric Evo Ceram (TEC), and Filtek One (FLO) and the second micro-CT images were obtained. Then after polymerization of the materials, the final micro-CT images were taken, and analyses were made according to the scanning results. The Kruskal Wallis and Mann Whitney U-tests were used in the statistical evaluation of the data. Results: The volumetric gap formed after polymerization of the composite resins was not determined to be statistically significant (p>0.05). Conclusion: The volumetric difference (%) between the composite resin and the dental tissue following polymerization was seen to be greatest in XTF and least in FTK. It was concluded that the volumetric gap caused by the polymerization shrinkage of the tested materials may be due to the structure of the material. How to cite this article: Cangül S, Adıgüzel Ö, Sağmak S, Evran B. A micro-computed tomography evaluation of the change in volume of different bulk-fill composite materials caused by polymerization shrinkage. Int Dent Res 2021;11(2):75-82. https://doi.org/10.5577/intdentres.2021.vol11.no2.4 Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.

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The use of micro-computed tomography in dental applications

Cited by 18 publications

References 23 publications

Surface Morphology of Three-Dimensionally Printed Replicas of Upper Dental Arches

Surface Morphology of Three-Dimensionally Printed Replicas of Upper Dental Arches

Non-Invasive Optical Coherence Tomography Data-Based Quantitative Algorithm for the Assessment of Residual Adhesive on Bracket-Removed Dental Surface

A micro-computed tomography evaluation of the change in volume of different bulk-fill composite materials caused by polymerization shrinkage

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