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Artykuły w czasopismach na temat „Multilayered Dental Post”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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Sprawdź 22 najlepszych artykułów w czasopismach naukowych na temat „Multilayered Dental Post”.

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1

Giti, Rashin, and Benika Abbasi. "The Effect of Translucency and Surface Treatment on the Flexural Strength of Aged Monolithic Zirconia." International Journal of Dentistry 2021 (November 9, 2021): 1–7. http://dx.doi.org/10.1155/2021/8022430.

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Aims. This in vitro study aimed to evaluate the effect of the degrees of translucency in different types of monolithic zirconia as well as the aging and surface treatment with airborne particle abrasion on the flexural strength of monolithic zirconia. Materials and Methods. Sixty bar-shaped specimens were fabricated from three different types of presintered monolithic zirconia (n = 20 per group) including low translucent (LT) (DD Bio ZW iso, high strength zirconia, Dental Direkt, Germany), high translucent (HT) (DD Bio ZX2 98, high translucent zirconia, Dental Direkt, Germany), and multilayere

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Jeong, Ji-In, Yong-Hoon Kwon, and Hyo-Joung Seol. "In Vitro Evaluation of Speed Sintering and Glazing Effects on the Flexural Strength and Microstructure of Highly Translucent Multilayered 5 mol% Yttria-Stabilized Zirconia." Materials 17, no. 18 (2024): 4634. http://dx.doi.org/10.3390/ma17184634.

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This study aimed to investigate the impact of speed sintering and glazing on the flexural strength and microstructure of multilayered 5 mol% yttria-stabilized (5Y-) zirconia, which remains unknown. Bar-shaped specimens (N = 600) were fabricated from 5Y-zirconia (FX; Ceramill Zolid FX ML, ST; Katana STML) by cutting, polishing, sintering (conventional and speed sintering), and then glazing. A flexural strength test (n = 30/group), field emission scanning electron microscopy (FE-SEM) observation (n = 2/group), and an X-ray diffraction (XRD) study with Rietveld refinement (n = 1/group) were perfo

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Güntekin, Neslihan, Burcu Kızılırmak, and Ali Rıza Tunçdemir. "Comparison of light transmission of multilayered zirconia materials produced using different sintering methods." International Dental Research 14, Suppl. 1 (2024): 55–59. https://doi.org/10.5577/indentres.551.

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Aim: In multilayered zirconia blocks, the enamel layer consists of 5Y-TZP, whereas the transition and body layers consist of 3Y-TZP content. Zirconias, which have different compositions, can be sintered quickly and conventionally, but the effect of rapid sintering on light translucency is not fully known. The aim of this study was to investigate the effect of speed-sintering protocols on the light translucency of multilayered monolithic zirconia materials. Methodology: In this study, multilayered blocks underwent a speed sintering protocol: Katana Zirconia YML (Kuraray) and IPS e.max ZirCAD Pr

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4

Cho, Mi-Hyang, and Hyo-Joung Seol. "Impact of Speed Sintering on Translucency, Opalescence and Microstructure of Dental Zirconia with a Combination of 5 mol% and 3 mol% Yttria-Stabilized Zirconia." Materials 17, no. 21 (2024): 5148. http://dx.doi.org/10.3390/ma17215148.

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Optical characteristics and microstructure of multilayered zirconia with different yttria contents in each layer can be influenced differently with a layer after speed sintering. The layer-wise translucency and opalescence of dental zirconia (E.max, E.max ZirCAD prime; Cercon, Cercon ht ML) after conventional (control) and speed sintering were analyzed using a spectrophotometer (n = 5). Specimens were subjected to microstructural analyses (n = 2) using field-emission scanning electron microscopy (FE-SEM) and phase analyses (n = 1) using high-resolution X-ray diffraction (HRXRD) and Rietveld re

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5

Pantea, Mihaela, Lucian Toma Ciocan, Vlad Gabriel Vasilescu, et al. "Effects of Different Surface Treatments and Accelerated Aging on Dental Zirconia—An In Vitro Study." Journal of Functional Biomaterials 16, no. 7 (2025): 263. https://doi.org/10.3390/jfb16070263.

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This in vitro study aimed to compare the effects of various surface treatments and hydrothermal aging on the phase composition, microstructure, and compressive strength of dental zirconia (ZrO2). Forty-eight zirconia cubes (8 × 8 × 8 mm) were fabricated using CAD/CAM from two materials: infrastructure zirconia (Group S1) and super-translucent multilayered monolithic zirconia (Group S2). Four samples of each material were analyzed in their pre-sintered state (S1-0, S2-0). The remaining specimens were sintered and assigned to sub-groups based on surface treatment: untreated, sandblasted with 30

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6

Strasser, Thomas, Alois Schmid, Christina Huber, and Martin Rosentritt. "4-Unit Molar Fixed Partial Dentures Made from Highly Translucent and Multilayer Zirconia Materials: An In Vitro Investigation." Ceramics 5, no. 1 (2022): 99–107. http://dx.doi.org/10.3390/ceramics5010009.

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Background: Modern zirconia blanks for the fabrication of dental CAD/CAM restorations provide a layer structure with color and strength transitions. Variation in the yttria content has a particular effect on the characteristics of the materials. The properties of dental restorations may vary depending on the milling position within the blank. Especially for wide-span fixed partial dentures (FPDs), relevant effects on clinical performance might result. This study investigated if the application of high-translucent zirconia and positioning within multilayer zirconia blanks affect the in vitro pe

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7

Hsu, Wen-Chieh, Tzu-Yu Peng, Chien-Ming Kang, Fan-Yi Chao, Jian-Hong Yu, and Su-Feng Chen. "Evaluating the Effect of Different Polymer and Composite Abutments on the Color Accuracy of Multilayer Pre-Colored Zirconia Polycrystal Dental Prosthesis." Polymers 14, no. 12 (2022): 2325. http://dx.doi.org/10.3390/polym14122325.

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With increasing aesthetic awareness and emphasis on time costs in today’s society, monolithic multilayer precolored zirconia ceramics (M-Zr) facilitate aesthetic restorations in a convenient and straightforward manner without the need for veneering porcelain to modify the color. However, the effect of abutment materials on the final color of M-Zr remains unclear. Herein, we placed Vita A1 Shade M-Zr on six different abutment materials, zirconia (Y-TZP), 3D printed composite resin (CR), dental model resin (MR), polyetheretherketone (PEEK), polyetherketoneketone (PEKK), and cobalt–chromium alloy

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8

P., Karthika, and Arockiasamy Karmel. "Simulation of SDN in mininet and detection of DDoS attack using machine learning." Bulletin of Electrical Engineering and Informatics 12, no. 3 (2023): 1797~1805. https://doi.org/10.11591/eei.v12i3.5232.

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Most contemporary businesses are embracing software defined networking (SDN), a developing architecture that enables an aerial-like perspective of the entire network. SDN operates by virtualizing the network and provides advantages including improved performance, visibility, speed, and scalability. SDN attempts to divide the network control plane from the forwarding plane. The control plane, which includes one or more controllers and incorporates complete intelligence, is thought of as the brain of the SDN. However, SDN has challenges with controller vulnerability, flexibility, and hardware se

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9

Dwivedi, Shubhra, Manu Vardhan, and Sarsij Tripathi. "Distributed Denial-of-Service Prediction on IoT Framework by Learning Techniques." Open Computer Science 10, no. 1 (2020): 220–30. http://dx.doi.org/10.1515/comp-2020-0009.

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AbstractDistributed denial-of-service (DDoS) attacks on the Internet of Things (IoT) pose a serious threat to several web-based networks. The intruder’s ability to deal with the power of various cooperating devices to instigate an attack makes its administration even more multifaceted. This complexity can be further increased while lots of intruders attempt to overload an attack against a device. To counter and defend against modern DDoS attacks, several effective and powerful techniques have been used in the literature, such as data mining and artificial intelligence for the intrusion detecti

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10

Karthika, P., and Karmel Arockiasamy. "Simulation of SDN in mininet and detection of DDoS attack using machine learning." Bulletin of Electrical Engineering and Informatics 12, no. 3 (2023): 1797–805. http://dx.doi.org/10.11591/eei.v12i3.5232.

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Most contemporary businesses are embracing software defined networking (SDN), a developing architecture that enables an aerial-like perspective of the entire network. SDN operates by virtualizing the network and provides advantages including improved performance, visibility, speed, and scalability. SDN attempts to divide the network control plane from the forwarding plane. The control plane, which includes one or more controllers and incorporates complete intelligence, is thought of as the brain of the SDN. However, SDN has challenges with controller vulnerability, flexibility, and hardware se

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11

Ahmed, Sheeraz, Zahoor Ali Khan, Syed Muhammad Mohsin, et al. "Effective and Efficient DDoS Attack Detection Using Deep Learning Algorithm, Multi-Layer Perceptron." Future Internet 15, no. 2 (2023): 76. http://dx.doi.org/10.3390/fi15020076.

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Distributed denial of service (DDoS) attacks pose an increasing threat to businesses and government agencies. They harm internet businesses, limit access to information and services, and damage corporate brands. Attackers use application layer DDoS attacks that are not easily detectable because of impersonating authentic users. In this study, we address novel application layer DDoS attacks by analyzing the characteristics of incoming packets, including the size of HTTP frame packets, the number of Internet Protocol (IP) addresses sent, constant mappings of ports, and the number of IP addresses

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12

Wu, Yeefong. "DDos attack detection method based on machine learning." Applied and Computational Engineering 18, no. 1 (2023): 88–95. http://dx.doi.org/10.54254/2755-2721/18/20230968.

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This paper introduces a novel machine learning-based approach for the detection of Distributed Denial of Service (DDoS) attacks. The proposed method employs three different classifiers, namely Support Vector Machine (SVM), Random Forest, and Multilayer Perceptron (MLP), to accurately classify network traffic as normal or malicious. The approach incorporates various features extracted from network traffic, such as packet length, packet inter-arrival time, and destination port number, to train the classifiers. The results demonstrate high accuracy rates, with Random Forest outperforming the othe

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13

Madfa, A.A., Kasim N.H. Abu, M. Hamdi, R. Rahbari G, and M.H. Latifi. "A finite element study of the multilayered structured dental post." University of Malaya, Kuala Lumpur, Malaysia, June 19, 2017. https://doi.org/10.5281/zenodo.811353.

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Ideally, dental post should have stiffness that is similar to the crown at the coronal part and stiffness similar to the dentine at the apical part. This will reduce stress concentration at either coronal or the apical parts of the dentine and minimize the chance of interfacial loosening and enhance the reliability of post. Objective: To investigate the biomechanical behaviour of Multilayered Structured Dental Posts (MSDPs) using finite element analysis (FEA). Methods: Two models of MSDPs consist of multilayer design of xTi-yHA composition added to a zirconia layer (model A) and the same compo

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14

Abu, Kasim N.H., A.A. MADFA, M. HAMDI, and G.R. RAHBARI. "3D-FE analysis of functionally graded structured dental posts." Japanese Society for Dental Materials and Devices, January 1, 2011. https://doi.org/10.5281/zenodo.811351.

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This study aimed to compare the biomechanical behaviour of functionally graded structured posts (FGSPs) and homogenous-type posts in simulated models of a maxillary central incisor. Two models of FGSPs consisting of a multilayer xTi-yHA composite design, where zirconia and alumina was added as the first layer for models A and B respectively were compared to homogenous zirconia post (model C) and a titanium post (model D). The amount of Ti and HA in the FGSP models was varied in gradations. 3D-FEA was performed on all models and stress distributions were investigated along the dental post. In a

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15

Madfa, A., Kasim N.H. Abu, M. Hamdi, R.G. Rahbari, and M. Bayat. "Thermo-mechanical stress in multilayered dental post due to temperature gradient." University of Malaya, Kuala Lumpur, Malaysia, January 1, 2010. https://doi.org/10.5281/zenodo.811355.

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Objective: To analyse thermo-mechanical stress in endodontically treated teeth restored with Multilayered Structured Dental Posts (MSDPs) under cold and hot conditions using Finite Element Analysis (FEM). Methods: Three MSDPs of multilayer design of xTi-yHA composition added to a zirconia layer (model A), an alumina layer (model B) and a titanium layer (model C) were compared with zirconia (model D) and titanium (model E) posts. The fractions of Ti and HA was varied gradually. Changes in temperature of an endodontically restored tooth model were calculated as a result of hot and cold response.

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16

Eric-Cristian, Cirica, Andreea Iordan-Dumitru Dona, Katalin Lackner Agnes, and Kozma Andrei. "ERUPTIVE AND POST ANOMALIES IN CHILDREN FROM DIVERSE BACKGROUNDS." Danish scientific journal 89 (October 26, 2024). https://doi.org/10.5281/zenodo.14012267.

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<strong>Abstract</strong> Tooth eruption is defined as a movement of a tooth from its intraosseous site to its functional position of occlusion. The process consists of three stages: (a) pre-eruptive tooth movement, (b) eruptive tooth movement, and (c) posteruptive tooth movement. Developmental dental anomalies can manifest as shape, form, number, and structural anomalies in the dentition, depending on the abnormal conditions and interactions in the embryological development process. Although the etiology of developmental dental anomalies, as in MIH, remains largely uncertain, many studies hav

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17

Rahbari, RG, Kasim N.H. Abu, AA Madfa, M. Hamdi, and M. Bayat. "Porosity reduction model in titanium - hydroxyapatite FGM composites using shrinkage measurement." Maney Publishing, January 1, 2011. https://doi.org/10.5281/zenodo.811343.

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A multilayered titanium (Ti)â??hydroxyapatite (HA) functionally graded material was produced via pressureless sintering at 1100Â?C. The initial and final porosities were determined via shrinkage measurements. The final porosity verification was carried out by the Archimedes method. The experimental porosity measurements were compared with two proposed models. The macroscopic and microstructure features and the measured porosities confirmed that the volume fraction porosity was associated with both matrix and reinforcing particles in all cases. The percolation threshold was observed at x = 0Â?7

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18

Mancini, Leonardo, Anahat Khehra, Tu Nguyen, Shayan Barootchi, and Lorenzo Tavelli. "Echo intensity and gray-level co-occurrence matrix analysis of soft tissue grafting biomaterials and dental implants: an in vitro ultrasonographic pilot study." Dentomaxillofacial Radiology, July 4, 2023. http://dx.doi.org/10.1259/dmfr.20230033.

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Objective: To characterize different allogeneic and xenogeneic soft tissue graft substitutes and to assess their echo intensity and grayscale texture-related outcomes by using high-frequency ultrasonography (HFUS). Methods: Ten samples from each of the following biomaterials were scanned using HFUS: bilayered collagen matrix (CM), cross-linked collagen matrix (CCM), multilayered cross-linked collagen matrix (MCCM), human-derived acellular dermal matrix (HADM), porcine-derived acellular dermal matrix (PADM), collagen tape dressing (C) and dental implants (IMPs). The obtained images were then im

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19

Kulakov, O. B., I. M. Shpitser, and A. V. Zhuravleva. "Clinical and morphological rationale for the use of a free split-thickness skin graft from the inner surface of the shoulder to form soft tissues when replacing dentition defects with dental implants." Head and neck. Russian Journal 11, no. 3 (2023). https://doi.org/10.25792/hn.2023.11.3.8-15.

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The need to create favorable conditions for the surrounding soft tissues to keep dental implants stable and functioning for a long time is currently well known. Often, in case of complete absence of teeth, it may be necessary to form a long and wide area of the keratinized tissue attachment. This requires a large amount of plastic material of appropriate quality, which can only be obtained from the extra-oral areas. Thus, the purpose and objective of this study was to determine a clinical and morphological substantiation of the use of a split-thickness skin graft from the inner surface of the

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20

Almeida, Laís da Mata, Jieni Zhang Jing, Marcelo Souza Rodrigues, Leandro Augusto Hilgert, and Rayssa Ferreira Zanatta. "Saving enamel: safe removal of residual residues after detaching orthodontic brackets." RGO - Revista Gaúcha de Odontologia 72 (2024). http://dx.doi.org/10.1590/1981-86372024002020240006.

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ABSTRACT In conventional orthodontics, the adhesive fixation of brackets plays an essential role in the success of the treatment. However, the removal of these devices at the end of the treatment can pose risks of excessive wear to the external surface of the enamel, especially when rotary instruments are indiscriminately used to remove the resin composite employed in cementation. Given that enamel is an inorganic tissue with no regenerative capacity, it becomes imperative to adopt conservative techniques to minimize unnecessary wear. This text aimed to discuss more conservative approaches, ex

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21

Zandinejad, Amirali, Ramtin Sadid Zadeh, Leila Nasiry Khanlar, Abdul Basir Barmak, and Marta Revilla‐León. "Fracture resistance, marginal and internal adaptation of innovative 3D‐printed graded structure crown using a 3D jet printing technology." Journal of Prosthodontics, June 21, 2024. http://dx.doi.org/10.1111/jopr.13895.

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AbstractPurposeThis in vitro study aimed to create a graded structured dental crown using 3D printing technology and investigate the fracture resistance and the adaptation of this new design.Materials and MethodsA dental crown with a uniform thickness of 1.5 mm was designed, and the exported stereolithography file (STL) was used to manufacture 30 crowns in three groups (n = 10), solid (SC), bilayer (BL), and multilayer (ML) crowns using 3D jet printing technology. Marginal and internal gaps were measured using the silicone replica technique. Crowns were then luted to a resin die using a tempor

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22

Tunca, Murat. "The Environmental Impact of Clear Aligners: Is Recycling and Waste Management Controlled?" European Journal of Therapeutics, January 30, 2024. http://dx.doi.org/10.58600/eurjther1984.

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Dear Editor, Clear aligner therapy has increasingly gained popularity in recent years [1]. This orthodontic treatment method was first introduced into the literature in the early 20th century. As of 2019, approximately four million individuals were reported to have undergone this treatment, a number that has since risen to over twelve million [2]. Furthermore, the rapid increase in the number of manufacturers producing clear aligners, reaching twenty-seven globally, indicates a swift upward trajectory in these figures [2, 3]. Typically, clear aligner materials include thermoplastic components

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