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Zafer C Cehreli - One of the best experts on this subject based on the ideXlab platform.

  • effect of Plunger Diameter on the push out bond values of different root filling materials
    International Endodontic Journal, 2011
    Co-Authors: Emre Nagas, Ozgur Uyanik, Veli Durmaz, Zafer C Cehreli
    Abstract:

    Nagas E, Uyanik O, Durmaz V, Cehreli ZC. Effect of Plunger Diameter on the push-out bond values of different root filling materials. International Endodontic Journal, 44, 950–955, 2011. Abstract Aims  To evaluate the effect of Plunger Diameter on the push-out bond strength of different root filling materials to root canal dentine. Methodology  Freshly extracted human incisors (n = 90) were decoronated, and the root canals were enlarged with post drills. Prepared roots were placed into a custom alignment apparatus to embed the roots vertically within self-curing acrylic resin. The specimens were randomly assigned into three groups according to the root filling system used: gutta-percha/AH Plus; Resilon/Epiphany; and fibre-reinforced composite (FRC)/Duolink resin cement. After filling, the specimens were further subdivided according to the Diameter of the Plunger used to employ the debonding force: 0.75, 1 and 1.25 mm. Intra-radicular bond strength was measured using the push-out test at a cross-head speed of 1 mm min−1. The data were analysed statistically using Kruskal–Wallis test with Bonferroni correction at P = 0.05. Results  Regardless of the Plunger Diameter, FRC yielded the highest bond strength, followed by gutta-percha and Resilon, respectively (P < 0.001). In all groups, greater Plunger Diameter resulted in an apparent increased bond strength, but the differences were only significant in the FRC group, with the 1.25-mm Plunger generating higher debonding values compared with that of its 0.75- and 1-mm versions (P < 0.001). In the gutta-percha and Resilon groups, the majority of specimens had adhesive failures. Roots filled with FRC exhibited more cohesive failures than those of the other test groups. Conclusions  Different Plunger Diameters are associated with significantly different intra-radicular push-out bond strengths of root filling systems.

  • Effect of Plunger Diameter on the push‐out bond values of different root filling materials
    International Endodontic Journal, 2011
    Co-Authors: Emre Nagas, Ozgur Uyanik, Veli Durmaz, Zafer C Cehreli
    Abstract:

    Nagas E, Uyanik O, Durmaz V, Cehreli ZC. Effect of Plunger Diameter on the push-out bond values of different root filling materials. International Endodontic Journal, 44, 950–955, 2011. Abstract Aims  To evaluate the effect of Plunger Diameter on the push-out bond strength of different root filling materials to root canal dentine. Methodology  Freshly extracted human incisors (n = 90) were decoronated, and the root canals were enlarged with post drills. Prepared roots were placed into a custom alignment apparatus to embed the roots vertically within self-curing acrylic resin. The specimens were randomly assigned into three groups according to the root filling system used: gutta-percha/AH Plus; Resilon/Epiphany; and fibre-reinforced composite (FRC)/Duolink resin cement. After filling, the specimens were further subdivided according to the Diameter of the Plunger used to employ the debonding force: 0.75, 1 and 1.25 mm. Intra-radicular bond strength was measured using the push-out test at a cross-head speed of 1 mm min−1. The data were analysed statistically using Kruskal–Wallis test with Bonferroni correction at P = 0.05. Results  Regardless of the Plunger Diameter, FRC yielded the highest bond strength, followed by gutta-percha and Resilon, respectively (P 

Emre Nagas - One of the best experts on this subject based on the ideXlab platform.

  • effect of Plunger Diameter on the push out bond values of different root filling materials
    International Endodontic Journal, 2011
    Co-Authors: Emre Nagas, Ozgur Uyanik, Veli Durmaz, Zafer C Cehreli
    Abstract:

    Nagas E, Uyanik O, Durmaz V, Cehreli ZC. Effect of Plunger Diameter on the push-out bond values of different root filling materials. International Endodontic Journal, 44, 950–955, 2011. Abstract Aims  To evaluate the effect of Plunger Diameter on the push-out bond strength of different root filling materials to root canal dentine. Methodology  Freshly extracted human incisors (n = 90) were decoronated, and the root canals were enlarged with post drills. Prepared roots were placed into a custom alignment apparatus to embed the roots vertically within self-curing acrylic resin. The specimens were randomly assigned into three groups according to the root filling system used: gutta-percha/AH Plus; Resilon/Epiphany; and fibre-reinforced composite (FRC)/Duolink resin cement. After filling, the specimens were further subdivided according to the Diameter of the Plunger used to employ the debonding force: 0.75, 1 and 1.25 mm. Intra-radicular bond strength was measured using the push-out test at a cross-head speed of 1 mm min−1. The data were analysed statistically using Kruskal–Wallis test with Bonferroni correction at P = 0.05. Results  Regardless of the Plunger Diameter, FRC yielded the highest bond strength, followed by gutta-percha and Resilon, respectively (P < 0.001). In all groups, greater Plunger Diameter resulted in an apparent increased bond strength, but the differences were only significant in the FRC group, with the 1.25-mm Plunger generating higher debonding values compared with that of its 0.75- and 1-mm versions (P < 0.001). In the gutta-percha and Resilon groups, the majority of specimens had adhesive failures. Roots filled with FRC exhibited more cohesive failures than those of the other test groups. Conclusions  Different Plunger Diameters are associated with significantly different intra-radicular push-out bond strengths of root filling systems.

  • Effect of Plunger Diameter on the push‐out bond values of different root filling materials
    International Endodontic Journal, 2011
    Co-Authors: Emre Nagas, Ozgur Uyanik, Veli Durmaz, Zafer C Cehreli
    Abstract:

    Nagas E, Uyanik O, Durmaz V, Cehreli ZC. Effect of Plunger Diameter on the push-out bond values of different root filling materials. International Endodontic Journal, 44, 950–955, 2011. Abstract Aims  To evaluate the effect of Plunger Diameter on the push-out bond strength of different root filling materials to root canal dentine. Methodology  Freshly extracted human incisors (n = 90) were decoronated, and the root canals were enlarged with post drills. Prepared roots were placed into a custom alignment apparatus to embed the roots vertically within self-curing acrylic resin. The specimens were randomly assigned into three groups according to the root filling system used: gutta-percha/AH Plus; Resilon/Epiphany; and fibre-reinforced composite (FRC)/Duolink resin cement. After filling, the specimens were further subdivided according to the Diameter of the Plunger used to employ the debonding force: 0.75, 1 and 1.25 mm. Intra-radicular bond strength was measured using the push-out test at a cross-head speed of 1 mm min−1. The data were analysed statistically using Kruskal–Wallis test with Bonferroni correction at P = 0.05. Results  Regardless of the Plunger Diameter, FRC yielded the highest bond strength, followed by gutta-percha and Resilon, respectively (P 

Ozgur Uyanik - One of the best experts on this subject based on the ideXlab platform.

  • effect of Plunger Diameter on the push out bond values of different root filling materials
    International Endodontic Journal, 2011
    Co-Authors: Emre Nagas, Ozgur Uyanik, Veli Durmaz, Zafer C Cehreli
    Abstract:

    Nagas E, Uyanik O, Durmaz V, Cehreli ZC. Effect of Plunger Diameter on the push-out bond values of different root filling materials. International Endodontic Journal, 44, 950–955, 2011. Abstract Aims  To evaluate the effect of Plunger Diameter on the push-out bond strength of different root filling materials to root canal dentine. Methodology  Freshly extracted human incisors (n = 90) were decoronated, and the root canals were enlarged with post drills. Prepared roots were placed into a custom alignment apparatus to embed the roots vertically within self-curing acrylic resin. The specimens were randomly assigned into three groups according to the root filling system used: gutta-percha/AH Plus; Resilon/Epiphany; and fibre-reinforced composite (FRC)/Duolink resin cement. After filling, the specimens were further subdivided according to the Diameter of the Plunger used to employ the debonding force: 0.75, 1 and 1.25 mm. Intra-radicular bond strength was measured using the push-out test at a cross-head speed of 1 mm min−1. The data were analysed statistically using Kruskal–Wallis test with Bonferroni correction at P = 0.05. Results  Regardless of the Plunger Diameter, FRC yielded the highest bond strength, followed by gutta-percha and Resilon, respectively (P < 0.001). In all groups, greater Plunger Diameter resulted in an apparent increased bond strength, but the differences were only significant in the FRC group, with the 1.25-mm Plunger generating higher debonding values compared with that of its 0.75- and 1-mm versions (P < 0.001). In the gutta-percha and Resilon groups, the majority of specimens had adhesive failures. Roots filled with FRC exhibited more cohesive failures than those of the other test groups. Conclusions  Different Plunger Diameters are associated with significantly different intra-radicular push-out bond strengths of root filling systems.

  • Effect of Plunger Diameter on the push‐out bond values of different root filling materials
    International Endodontic Journal, 2011
    Co-Authors: Emre Nagas, Ozgur Uyanik, Veli Durmaz, Zafer C Cehreli
    Abstract:

    Nagas E, Uyanik O, Durmaz V, Cehreli ZC. Effect of Plunger Diameter on the push-out bond values of different root filling materials. International Endodontic Journal, 44, 950–955, 2011. Abstract Aims  To evaluate the effect of Plunger Diameter on the push-out bond strength of different root filling materials to root canal dentine. Methodology  Freshly extracted human incisors (n = 90) were decoronated, and the root canals were enlarged with post drills. Prepared roots were placed into a custom alignment apparatus to embed the roots vertically within self-curing acrylic resin. The specimens were randomly assigned into three groups according to the root filling system used: gutta-percha/AH Plus; Resilon/Epiphany; and fibre-reinforced composite (FRC)/Duolink resin cement. After filling, the specimens were further subdivided according to the Diameter of the Plunger used to employ the debonding force: 0.75, 1 and 1.25 mm. Intra-radicular bond strength was measured using the push-out test at a cross-head speed of 1 mm min−1. The data were analysed statistically using Kruskal–Wallis test with Bonferroni correction at P = 0.05. Results  Regardless of the Plunger Diameter, FRC yielded the highest bond strength, followed by gutta-percha and Resilon, respectively (P 

Veli Durmaz - One of the best experts on this subject based on the ideXlab platform.

  • effect of Plunger Diameter on the push out bond values of different root filling materials
    International Endodontic Journal, 2011
    Co-Authors: Emre Nagas, Ozgur Uyanik, Veli Durmaz, Zafer C Cehreli
    Abstract:

    Nagas E, Uyanik O, Durmaz V, Cehreli ZC. Effect of Plunger Diameter on the push-out bond values of different root filling materials. International Endodontic Journal, 44, 950–955, 2011. Abstract Aims  To evaluate the effect of Plunger Diameter on the push-out bond strength of different root filling materials to root canal dentine. Methodology  Freshly extracted human incisors (n = 90) were decoronated, and the root canals were enlarged with post drills. Prepared roots were placed into a custom alignment apparatus to embed the roots vertically within self-curing acrylic resin. The specimens were randomly assigned into three groups according to the root filling system used: gutta-percha/AH Plus; Resilon/Epiphany; and fibre-reinforced composite (FRC)/Duolink resin cement. After filling, the specimens were further subdivided according to the Diameter of the Plunger used to employ the debonding force: 0.75, 1 and 1.25 mm. Intra-radicular bond strength was measured using the push-out test at a cross-head speed of 1 mm min−1. The data were analysed statistically using Kruskal–Wallis test with Bonferroni correction at P = 0.05. Results  Regardless of the Plunger Diameter, FRC yielded the highest bond strength, followed by gutta-percha and Resilon, respectively (P < 0.001). In all groups, greater Plunger Diameter resulted in an apparent increased bond strength, but the differences were only significant in the FRC group, with the 1.25-mm Plunger generating higher debonding values compared with that of its 0.75- and 1-mm versions (P < 0.001). In the gutta-percha and Resilon groups, the majority of specimens had adhesive failures. Roots filled with FRC exhibited more cohesive failures than those of the other test groups. Conclusions  Different Plunger Diameters are associated with significantly different intra-radicular push-out bond strengths of root filling systems.

  • Effect of Plunger Diameter on the push‐out bond values of different root filling materials
    International Endodontic Journal, 2011
    Co-Authors: Emre Nagas, Ozgur Uyanik, Veli Durmaz, Zafer C Cehreli
    Abstract:

    Nagas E, Uyanik O, Durmaz V, Cehreli ZC. Effect of Plunger Diameter on the push-out bond values of different root filling materials. International Endodontic Journal, 44, 950–955, 2011. Abstract Aims  To evaluate the effect of Plunger Diameter on the push-out bond strength of different root filling materials to root canal dentine. Methodology  Freshly extracted human incisors (n = 90) were decoronated, and the root canals were enlarged with post drills. Prepared roots were placed into a custom alignment apparatus to embed the roots vertically within self-curing acrylic resin. The specimens were randomly assigned into three groups according to the root filling system used: gutta-percha/AH Plus; Resilon/Epiphany; and fibre-reinforced composite (FRC)/Duolink resin cement. After filling, the specimens were further subdivided according to the Diameter of the Plunger used to employ the debonding force: 0.75, 1 and 1.25 mm. Intra-radicular bond strength was measured using the push-out test at a cross-head speed of 1 mm min−1. The data were analysed statistically using Kruskal–Wallis test with Bonferroni correction at P = 0.05. Results  Regardless of the Plunger Diameter, FRC yielded the highest bond strength, followed by gutta-percha and Resilon, respectively (P 

Deng Hong-ying - One of the best experts on this subject based on the ideXlab platform.

  • Analysis and CFD Simulation of the Flow Field in an Oilfield Reciprocating Polymer Injected Pump Poppet Valve
    Fluid Machinery, 2020
    Co-Authors: Deng Hong-ying
    Abstract:

    For conveying high viscosity medium reciprocating polymer injected pump,the internal flow field of a fluid end poppet valve is simulated and analyzed with CFD technique.According to the practical structure of the poppet valve,a simplified 2-D axis-symmetry geometry model of the flow field is established.Combined with pump speed,Plunger stroke and Plunger Diameter,given the boundary condition of the inlet valve,then the numerical simulation of different high viscosity medium flow field in poppet valve is done depending on software Fluent.The relationship between viscosity and pressure drop,discharge coefficient,steady-state flow force are obtained.And they provide reference for the design of poppet valve used in reciprocating polymer injected pump.