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| 1 | Effect of restoration technique on resistance to fracture of endodontically treated anterior teeth with flared root canals显示文摘This study was designed to compare the impact of post and core systems on resistance to fracture of endodontically treated anterior teeth with flared root canals and to assess their fracture pattern. Sixty central incisors were cut horizontally 2 mm coronal to the cementoenamel junction(CEJ). After root canal therapy, teeth were assigned into 6 groups(n = 10 each) based on a post system and used as follows: Group C, non-flared root received size #1 glass fiber posts(Control); Group AP, flared root restored with anatomical post; Group RC, flared root restored with size #1 fiber post and cemented with thick layer of resin cement; Group CR, flared root restored with size #1 and reinforced with composite resin; Group CM, cast post-core; Group CP, CAD/CAM polymer-infiltrated ceramic post and core.Following post cementation, core build-up and crown insertion, the specimens were thermo-cycled up to 10,000 cycles(5 C/55 C; 30 seconds dwell time, 6 seconds transition time) and then statically loaded at 1 mm/minute crosshead speed using a universal testing machine. One-way ANOVA and Tukey HSD post hoc test(α= 0.05) were used for data analysis. Group C recorded significantly higher resistance to fracture values [(826.9±39.1) N] followed by group CP [(793.8±55.6) N] while group RC yielded the lowest fracture resistance values [(586.7±51.4) N]. The resistance to fracture of wide root canals can be enhanced by using one-piece CAM/CAM post and core as an alternative to the use of either glass fiber post, relined with composite resin increasing the thickness of luting cement or the use of cast post and core system. However, this was an in vitro investigation and further in vivo studies are necessary. | Sary S Borzangy Samah M Saker Walid A Al-Zordk | 2019 | The Journal of Biomedical Research2019，33，2： | 4 |
| 2 | Oscillation and Global Attractivity in Hematopoiesis Model with Time Delay显示文摘 | SAKER S H | 2003 | Applied Mathematics and Computation2003，134，： | 1 |
| 3 | Oscillation theorems for second order nonlinear functional differential equations with damping 显示文摘 | Saker S H Pang P Y H Agarwal R P | 2003 | Dynamic Systems and Applications2003，12，34： | 1 |
| 4 | New oscillation criteria for first order nonlinear neutral delay differential equations显示文摘 | ELABBASY E M HASSAN T S SAKER S H | 2006 | J Appl Math Comput2006，2，12： | 1 |
| 5 | Oscillation of second-order damped dynamic equations on time scales显示文摘 | Saker S H Agarwal R P Regan D | 2007 | J Math Anal Appl2007，330，2： | 1 |
| 6 | Oscillation of nonlinear delay differential equations with application to models exhibiting the Allee effect显示文摘 | Elabbasy E M Saker S H Sail K | 1999 | Far East J Math Sci1999，1，4： | 1 |
| 7 | Oscillation criteria for first order nonlinear neutral delay differential equations显示文摘 | ELABBASY E M HASSAN T S SAKER S H | 2005 | J Differential Equations2005，134，： | 1 |
| 8 | Oscillation and global attractivity in aperiodic Nicholson's blowflies model显示文摘 | Saker S H Agarwal S | 2002 | Math Comput Modelling2002，，35： | 1 |
| 9 | Monitoring of cultivar identity in tissue culture-derived date palms using RAPD and AFLP analysis显示文摘 | Saker M M Adawy S S Mohamed A A | 2006 | Biol Plant2006，50，2： | 1 |
| 10 | Oscillation of second order delay dynamic equations显示文摘 | AGARWAL R P BOHNER M SAKER S H | 2005 | Canadian Applied Mathematics Quarterly2005，13，1： | 1 |
| 11 | Oscillation criteria for second-order nonlinear delay dynamic equations on time scales显示文摘 | ERBE L H PETERSON A SAKER S H | 2007 | J Math Anal Appl2007，333，1： | 1 |
| 12 | Oscillation of nonlinear dymamic equations on time scales 显示文摘 | Saker S H | 2004 | Appl Math Comprt2004，148，1： | 1 |
| 13 | Oscillation of second order delay dynamic equations 显示文摘 | Agarwal R P Bohner M Saker S H | 2005 | Canadian Applied Mathematics Quarterly2005，13，1： | 1 |
| 14 | Oscillation and global attractivity in hematopoiesis model with delay time显示文摘 | Saker S H | 2003 | Applied Mathe- matics and Computation2003，136，： | 1 |
| 15 | Oscillation criteria for second order nonlinear neutral delay dynamic equations 显示文摘 | Agarwal R P O'Regan D Saker S H | 2004 | J Math Anal Appi2004，300，1： | 1 |
| 16 | Oscillation of second order nonlinear neutral delay dynamic equations on time scales 显示文摘 | Saker S H | 2006 | J Comp Appl Math2006，187，2： | 1 |
| 17 | Oscillation of second-order nonlinear neutral delay dynamic equations on time scales 显示文摘 | Saker S H | 2006 | Comp Appl Math2006，187，2： | 1 |
| 18 | Oscillation of second order delay dynamic equations显示文摘 | Agarwal R P Bohner M Saker S H | 2005 | Canadian Applied Mathematics Quarterly2005，13，1： | 1 |
| 19 | Oscillation of second-order Sublinear neutral delay difference equations显示文摘 | Li Wan tong Saker S H | 2003 | Appl Math Comp2003，146，： | 1 |
| 20 | Oscillation criteria for second order superlinear neutral delay differential equations显示文摘 | Saker S H Manojlovic J V | 2004 | Electron J Qual Theory Differ Equ2004，10，： | 1 |
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