The Experts below are selected from a list of 190593 Experts worldwide ranked by ideXlab platform
Matthias Kern - One of the best experts on this subject based on the ideXlab platform.
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Mechanical Resistance of screwless morse taper and screw retained implant abutment connections
Clinical Oral Implants Research, 2015Co-Authors: Cihan Sadi Ugurel, Omer Kutay, Gul Isikozkol, Martin Steiner, Matthias KernAbstract:Objective The screwless morse taper (SMT) implant-abutment connection is an alternative to conventional external or internal screw-retained (ISR) connections. The aim of this in vitro study was to evaluate Mechanical Resistance of the SMT connection and to compare it with three different ISR connections. Materials and Methods Four implant systems were tested in this study: SMT system; Tasarimmed Octo (Istanbul, Turkey), ISR systems; Straumann Bone Level (Basel, Switzerland), Biohorizons Internal (Birmingham, AL, USA), and Dentsply Friadent Xive (Mannheim, Germany). Overall, 64 specimens with stylized single crowns were prepared: 32 for dynamic loading (DL) and 32 for static loading (SL). DL was carried out using a chewing simulator with 120 N at 1.75 Hz for 1.2 × 106 cycles, and SL was performed with a universal testing machine at a crosshead speed of 2 mm/min with an angulation of 30°. Cycles until failure from DL and fracture/bending loads at SL were recorded. Statistical analyses were made with Dunn's multiple comparison. Results Median cycles until failure in DL were as follows: Octo 86,354 (24,810–153,875), Straumann 1,200,000 (1,156,618–1,200,000), Biohorizons 539,719 (437,224–858,732), Xive 139,411 (139,411–139,411). Median fracture/bending loads in Newton at SL were as follows: Octo 429.6 (404.5–482.7), Straumann 574.6 (544.6–629.9), Biohorizons 548.7 (532.9–567.3), Xive 431.5 (412.5–520.5). There were significant differences between the implant systems under both loading conditions (P ≤ 0.05) revealing that the Octo implant system's SMT connection showed significantly lower cycles to failures and lower fracture/bending loads compared with the ISR connections of the Straumann and Biohorizons implant systems. However, there was no significant difference compared with the Xive implant system. Conclusion The Mechanical Resistance of the screwless morse taper implant system is lower than that of the ISR implant systems that might result in more frequent clinical complications.
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Mechanical Resistance of screwless morse taper and screw‐retained implant‐abutment connections
Clinical Oral Implants Research, 2013Co-Authors: Cihan Sadi Ugurel, Omer Kutay, Gulbahar Isik-ozkol, Martin Steiner, Matthias KernAbstract:Objective The screwless morse taper (SMT) implant-abutment connection is an alternative to conventional external or internal screw-retained (ISR) connections. The aim of this in vitro study was to evaluate Mechanical Resistance of the SMT connection and to compare it with three different ISR connections. Materials and Methods Four implant systems were tested in this study: SMT system; Tasarimmed Octo (Istanbul, Turkey), ISR systems; Straumann Bone Level (Basel, Switzerland), Biohorizons Internal (Birmingham, AL, USA), and Dentsply Friadent Xive (Mannheim, Germany). Overall, 64 specimens with stylized single crowns were prepared: 32 for dynamic loading (DL) and 32 for static loading (SL). DL was carried out using a chewing simulator with 120 N at 1.75 Hz for 1.2 × 106 cycles, and SL was performed with a universal testing machine at a crosshead speed of 2 mm/min with an angulation of 30°. Cycles until failure from DL and fracture/bending loads at SL were recorded. Statistical analyses were made with Dunn's multiple comparison. Results Median cycles until failure in DL were as follows: Octo 86,354 (24,810–153,875), Straumann 1,200,000 (1,156,618–1,200,000), Biohorizons 539,719 (437,224–858,732), Xive 139,411 (139,411–139,411). Median fracture/bending loads in Newton at SL were as follows: Octo 429.6 (404.5–482.7), Straumann 574.6 (544.6–629.9), Biohorizons 548.7 (532.9–567.3), Xive 431.5 (412.5–520.5). There were significant differences between the implant systems under both loading conditions (P ≤ 0.05) revealing that the Octo implant system's SMT connection showed significantly lower cycles to failures and lower fracture/bending loads compared with the ISR connections of the Straumann and Biohorizons implant systems. However, there was no significant difference compared with the Xive implant system. Conclusion The Mechanical Resistance of the screwless morse taper implant system is lower than that of the ISR implant systems that might result in more frequent clinical complications.
R. Maheswaran - One of the best experts on this subject based on the ideXlab platform.
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Effect of inclusion of SiC particulates on the Mechanical Resistance behaviour of stir-cast AA6063/SiC composites
Materials & Design (1980-2015), 2015Co-Authors: I. Balasubramanian, R. MaheswaranAbstract:Abstract This study investigates the Mechanical Resistance behaviour of AA6063 particulate composites with the inclusion of micron-sized silicon carbide (SiC) particles with different weight percentages in an AA6063 aluminium matrix. AA6063/SiC particulate composites containing 0, 5, 10, and 15 weight percent of SiC particles were produced by stir casting. Standard Mechanical tests were conducted on the composite plates, and the Mechanical Resistance to indentation, tensile force and sliding force are evaluated. It has been observed that upon addition of SiC particles, the Resistance against indentation is increased and the Resistance against tensile force is initially increased and then decreased. Furthermore, using scanning electron microscopy (SEM), the fracture appearance of the broken specimen subjected to tensile force and morphological changes in the surface subjected to sliding force are analysed. The SEM images reveal that the addition of SiC particles in the AA6063 aluminium matrix initiates more cleavage facets. This leads to brittle fracture in the specimen subjected to tensile forces and less transition from material displacement to material removal in the specimen subjected to sliding forces.
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effect of inclusion of sic particulates on the Mechanical Resistance behaviour of stir cast aa6063 sic composites
Materials & Design, 2015Co-Authors: I. Balasubramanian, R. MaheswaranAbstract:Abstract This study investigates the Mechanical Resistance behaviour of AA6063 particulate composites with the inclusion of micron-sized silicon carbide (SiC) particles with different weight percentages in an AA6063 aluminium matrix. AA6063/SiC particulate composites containing 0, 5, 10, and 15 weight percent of SiC particles were produced by stir casting. Standard Mechanical tests were conducted on the composite plates, and the Mechanical Resistance to indentation, tensile force and sliding force are evaluated. It has been observed that upon addition of SiC particles, the Resistance against indentation is increased and the Resistance against tensile force is initially increased and then decreased. Furthermore, using scanning electron microscopy (SEM), the fracture appearance of the broken specimen subjected to tensile force and morphological changes in the surface subjected to sliding force are analysed. The SEM images reveal that the addition of SiC particles in the AA6063 aluminium matrix initiates more cleavage facets. This leads to brittle fracture in the specimen subjected to tensile forces and less transition from material displacement to material removal in the specimen subjected to sliding forces.
Cihan Sadi Ugurel - One of the best experts on this subject based on the ideXlab platform.
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Mechanical Resistance of screwless morse taper and screw retained implant abutment connections
Clinical Oral Implants Research, 2015Co-Authors: Cihan Sadi Ugurel, Omer Kutay, Gul Isikozkol, Martin Steiner, Matthias KernAbstract:Objective The screwless morse taper (SMT) implant-abutment connection is an alternative to conventional external or internal screw-retained (ISR) connections. The aim of this in vitro study was to evaluate Mechanical Resistance of the SMT connection and to compare it with three different ISR connections. Materials and Methods Four implant systems were tested in this study: SMT system; Tasarimmed Octo (Istanbul, Turkey), ISR systems; Straumann Bone Level (Basel, Switzerland), Biohorizons Internal (Birmingham, AL, USA), and Dentsply Friadent Xive (Mannheim, Germany). Overall, 64 specimens with stylized single crowns were prepared: 32 for dynamic loading (DL) and 32 for static loading (SL). DL was carried out using a chewing simulator with 120 N at 1.75 Hz for 1.2 × 106 cycles, and SL was performed with a universal testing machine at a crosshead speed of 2 mm/min with an angulation of 30°. Cycles until failure from DL and fracture/bending loads at SL were recorded. Statistical analyses were made with Dunn's multiple comparison. Results Median cycles until failure in DL were as follows: Octo 86,354 (24,810–153,875), Straumann 1,200,000 (1,156,618–1,200,000), Biohorizons 539,719 (437,224–858,732), Xive 139,411 (139,411–139,411). Median fracture/bending loads in Newton at SL were as follows: Octo 429.6 (404.5–482.7), Straumann 574.6 (544.6–629.9), Biohorizons 548.7 (532.9–567.3), Xive 431.5 (412.5–520.5). There were significant differences between the implant systems under both loading conditions (P ≤ 0.05) revealing that the Octo implant system's SMT connection showed significantly lower cycles to failures and lower fracture/bending loads compared with the ISR connections of the Straumann and Biohorizons implant systems. However, there was no significant difference compared with the Xive implant system. Conclusion The Mechanical Resistance of the screwless morse taper implant system is lower than that of the ISR implant systems that might result in more frequent clinical complications.
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Mechanical Resistance of screwless morse taper and screw‐retained implant‐abutment connections
Clinical Oral Implants Research, 2013Co-Authors: Cihan Sadi Ugurel, Omer Kutay, Gulbahar Isik-ozkol, Martin Steiner, Matthias KernAbstract:Objective The screwless morse taper (SMT) implant-abutment connection is an alternative to conventional external or internal screw-retained (ISR) connections. The aim of this in vitro study was to evaluate Mechanical Resistance of the SMT connection and to compare it with three different ISR connections. Materials and Methods Four implant systems were tested in this study: SMT system; Tasarimmed Octo (Istanbul, Turkey), ISR systems; Straumann Bone Level (Basel, Switzerland), Biohorizons Internal (Birmingham, AL, USA), and Dentsply Friadent Xive (Mannheim, Germany). Overall, 64 specimens with stylized single crowns were prepared: 32 for dynamic loading (DL) and 32 for static loading (SL). DL was carried out using a chewing simulator with 120 N at 1.75 Hz for 1.2 × 106 cycles, and SL was performed with a universal testing machine at a crosshead speed of 2 mm/min with an angulation of 30°. Cycles until failure from DL and fracture/bending loads at SL were recorded. Statistical analyses were made with Dunn's multiple comparison. Results Median cycles until failure in DL were as follows: Octo 86,354 (24,810–153,875), Straumann 1,200,000 (1,156,618–1,200,000), Biohorizons 539,719 (437,224–858,732), Xive 139,411 (139,411–139,411). Median fracture/bending loads in Newton at SL were as follows: Octo 429.6 (404.5–482.7), Straumann 574.6 (544.6–629.9), Biohorizons 548.7 (532.9–567.3), Xive 431.5 (412.5–520.5). There were significant differences between the implant systems under both loading conditions (P ≤ 0.05) revealing that the Octo implant system's SMT connection showed significantly lower cycles to failures and lower fracture/bending loads compared with the ISR connections of the Straumann and Biohorizons implant systems. However, there was no significant difference compared with the Xive implant system. Conclusion The Mechanical Resistance of the screwless morse taper implant system is lower than that of the ISR implant systems that might result in more frequent clinical complications.
I. Balasubramanian - One of the best experts on this subject based on the ideXlab platform.
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Effect of inclusion of SiC particulates on the Mechanical Resistance behaviour of stir-cast AA6063/SiC composites
Materials & Design (1980-2015), 2015Co-Authors: I. Balasubramanian, R. MaheswaranAbstract:Abstract This study investigates the Mechanical Resistance behaviour of AA6063 particulate composites with the inclusion of micron-sized silicon carbide (SiC) particles with different weight percentages in an AA6063 aluminium matrix. AA6063/SiC particulate composites containing 0, 5, 10, and 15 weight percent of SiC particles were produced by stir casting. Standard Mechanical tests were conducted on the composite plates, and the Mechanical Resistance to indentation, tensile force and sliding force are evaluated. It has been observed that upon addition of SiC particles, the Resistance against indentation is increased and the Resistance against tensile force is initially increased and then decreased. Furthermore, using scanning electron microscopy (SEM), the fracture appearance of the broken specimen subjected to tensile force and morphological changes in the surface subjected to sliding force are analysed. The SEM images reveal that the addition of SiC particles in the AA6063 aluminium matrix initiates more cleavage facets. This leads to brittle fracture in the specimen subjected to tensile forces and less transition from material displacement to material removal in the specimen subjected to sliding forces.
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effect of inclusion of sic particulates on the Mechanical Resistance behaviour of stir cast aa6063 sic composites
Materials & Design, 2015Co-Authors: I. Balasubramanian, R. MaheswaranAbstract:Abstract This study investigates the Mechanical Resistance behaviour of AA6063 particulate composites with the inclusion of micron-sized silicon carbide (SiC) particles with different weight percentages in an AA6063 aluminium matrix. AA6063/SiC particulate composites containing 0, 5, 10, and 15 weight percent of SiC particles were produced by stir casting. Standard Mechanical tests were conducted on the composite plates, and the Mechanical Resistance to indentation, tensile force and sliding force are evaluated. It has been observed that upon addition of SiC particles, the Resistance against indentation is increased and the Resistance against tensile force is initially increased and then decreased. Furthermore, using scanning electron microscopy (SEM), the fracture appearance of the broken specimen subjected to tensile force and morphological changes in the surface subjected to sliding force are analysed. The SEM images reveal that the addition of SiC particles in the AA6063 aluminium matrix initiates more cleavage facets. This leads to brittle fracture in the specimen subjected to tensile forces and less transition from material displacement to material removal in the specimen subjected to sliding forces.
Omer Kutay - One of the best experts on this subject based on the ideXlab platform.
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Mechanical Resistance of screwless morse taper and screw retained implant abutment connections
Clinical Oral Implants Research, 2015Co-Authors: Cihan Sadi Ugurel, Omer Kutay, Gul Isikozkol, Martin Steiner, Matthias KernAbstract:Objective The screwless morse taper (SMT) implant-abutment connection is an alternative to conventional external or internal screw-retained (ISR) connections. The aim of this in vitro study was to evaluate Mechanical Resistance of the SMT connection and to compare it with three different ISR connections. Materials and Methods Four implant systems were tested in this study: SMT system; Tasarimmed Octo (Istanbul, Turkey), ISR systems; Straumann Bone Level (Basel, Switzerland), Biohorizons Internal (Birmingham, AL, USA), and Dentsply Friadent Xive (Mannheim, Germany). Overall, 64 specimens with stylized single crowns were prepared: 32 for dynamic loading (DL) and 32 for static loading (SL). DL was carried out using a chewing simulator with 120 N at 1.75 Hz for 1.2 × 106 cycles, and SL was performed with a universal testing machine at a crosshead speed of 2 mm/min with an angulation of 30°. Cycles until failure from DL and fracture/bending loads at SL were recorded. Statistical analyses were made with Dunn's multiple comparison. Results Median cycles until failure in DL were as follows: Octo 86,354 (24,810–153,875), Straumann 1,200,000 (1,156,618–1,200,000), Biohorizons 539,719 (437,224–858,732), Xive 139,411 (139,411–139,411). Median fracture/bending loads in Newton at SL were as follows: Octo 429.6 (404.5–482.7), Straumann 574.6 (544.6–629.9), Biohorizons 548.7 (532.9–567.3), Xive 431.5 (412.5–520.5). There were significant differences between the implant systems under both loading conditions (P ≤ 0.05) revealing that the Octo implant system's SMT connection showed significantly lower cycles to failures and lower fracture/bending loads compared with the ISR connections of the Straumann and Biohorizons implant systems. However, there was no significant difference compared with the Xive implant system. Conclusion The Mechanical Resistance of the screwless morse taper implant system is lower than that of the ISR implant systems that might result in more frequent clinical complications.
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Mechanical Resistance of screwless morse taper and screw‐retained implant‐abutment connections
Clinical Oral Implants Research, 2013Co-Authors: Cihan Sadi Ugurel, Omer Kutay, Gulbahar Isik-ozkol, Martin Steiner, Matthias KernAbstract:Objective The screwless morse taper (SMT) implant-abutment connection is an alternative to conventional external or internal screw-retained (ISR) connections. The aim of this in vitro study was to evaluate Mechanical Resistance of the SMT connection and to compare it with three different ISR connections. Materials and Methods Four implant systems were tested in this study: SMT system; Tasarimmed Octo (Istanbul, Turkey), ISR systems; Straumann Bone Level (Basel, Switzerland), Biohorizons Internal (Birmingham, AL, USA), and Dentsply Friadent Xive (Mannheim, Germany). Overall, 64 specimens with stylized single crowns were prepared: 32 for dynamic loading (DL) and 32 for static loading (SL). DL was carried out using a chewing simulator with 120 N at 1.75 Hz for 1.2 × 106 cycles, and SL was performed with a universal testing machine at a crosshead speed of 2 mm/min with an angulation of 30°. Cycles until failure from DL and fracture/bending loads at SL were recorded. Statistical analyses were made with Dunn's multiple comparison. Results Median cycles until failure in DL were as follows: Octo 86,354 (24,810–153,875), Straumann 1,200,000 (1,156,618–1,200,000), Biohorizons 539,719 (437,224–858,732), Xive 139,411 (139,411–139,411). Median fracture/bending loads in Newton at SL were as follows: Octo 429.6 (404.5–482.7), Straumann 574.6 (544.6–629.9), Biohorizons 548.7 (532.9–567.3), Xive 431.5 (412.5–520.5). There were significant differences between the implant systems under both loading conditions (P ≤ 0.05) revealing that the Octo implant system's SMT connection showed significantly lower cycles to failures and lower fracture/bending loads compared with the ISR connections of the Straumann and Biohorizons implant systems. However, there was no significant difference compared with the Xive implant system. Conclusion The Mechanical Resistance of the screwless morse taper implant system is lower than that of the ISR implant systems that might result in more frequent clinical complications.