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Full-Text Articles in Medicine and Health Sciences
Fracture Resistance Of Titanium And Ceramic-Reinforced Poly Ether Ether-Ketone Implant Abutments Supporting Monolithic Lithium Disilicate Ceramic Crowns And Ceramic-Reinforced Poly Ether Ether Ketone (Peek) Crowns, Eslam Y. Monsour, Sahar A. Abdel-Aziz, Zainab R. El Sharkawy
Fracture Resistance Of Titanium And Ceramic-Reinforced Poly Ether Ether-Ketone Implant Abutments Supporting Monolithic Lithium Disilicate Ceramic Crowns And Ceramic-Reinforced Poly Ether Ether Ketone (Peek) Crowns, Eslam Y. Monsour, Sahar A. Abdel-Aziz, Zainab R. El Sharkawy
Al-Azhar Journal of Dentistry
Purpose: The current study aimed to evaluate the fracture resistance of titanium and ceramic-reinforced poly-ether-ether-ketone (PEEK) implant abutment supporting monolithic lithium disilicate ceramic crown, and ceramic-reinforced poly ether ether ketone (PEEK) crowns. Materials and methods: Twenty-eight implant abutments (SKY Implant) were divided into Group I: Titanium implant abutment (control) and Group II: Ceramic-reinforced implant abutment (PEEK). Twenty-eight monolithic crowns were divided into: 4 Subgroups; Subgroup A (PEEK /PEEK), Subgroup B (E.max / PEEK), Subgroup C (PEEK / Metal) and Subgroup D (E.max /Metal). Restorations were cemented with adhesive resin cement (Panavia F2.0) on PEEK and titanium abutments. All fixed crown …
Comparative Evaluation Of Fracture Resistance Of Two Primary Esthetic Crowns After Aging., Aya M. Abo Arab, Sara N. Hashem, Mohammed H. Mostafa
Comparative Evaluation Of Fracture Resistance Of Two Primary Esthetic Crowns After Aging., Aya M. Abo Arab, Sara N. Hashem, Mohammed H. Mostafa
Al-Azhar Journal of Dentistry
Purpose: To evaluate fracture resistance of Zirconia and fiber glass pediatric crowns with thermal aging in comparison to a control group without thermal aging.Materials and Methods:Twenty-eight esthetic crowns for upper right D size 5 from two manufacturers were divided into(14 Kids-e®-crowns and Figaro® crowns) and further divided into subgroups with and without thermal aging. All the samples were subjected to fracture resistance test using a universal testing machine after the samples were cemented and mounted onto negative replicas. Results:Assessment of the overall difference was tested using repeated measure analysis of variance. Repeated measure ANOVA revealed that the fracture resistance of …
Effect Of Aging On Marginal Adaptation And Fracture Resistance Of Differently Designed Cad/Cam Restorations For Endodontically Treated Single Rooted Teeth, Sara A. Eldin, Jylan Elguindy, Atef F. Ahmed, Shereen K. Salem
Effect Of Aging On Marginal Adaptation And Fracture Resistance Of Differently Designed Cad/Cam Restorations For Endodontically Treated Single Rooted Teeth, Sara A. Eldin, Jylan Elguindy, Atef F. Ahmed, Shereen K. Salem
Al-Azhar Journal of Dentistry
Purpose: To evaluate the effect of aging on marginal adaptation and fracture resistance of two CAD/CAM designs and ceramic materials to restore endodontically treated premolars. Materials and Methods: Forty extracted upper second premolars were collected (single rooted, single canal), cleaned and endodontically treated, then divided into 2 main groups (n=20) each having a different restoration design. Group I (fiber-post, composite core, and crown), Group II (endocrowns). Preparations were done according to each restoration design guidance. Each group was divided into 2 subgroups (n=10) according to the used material; Vita Enamic (E), Vita Suprinity(S); Subgroups IE, IIE and IS, IIS respectively. …