Mohammed Ali Fayyad

Learn More
In this investigation 156 dental bridges, constructed for 132 individuals, were evaluated. The bridges inserted at the College of Dentistry, King Saud University (KSU), Saudi Arabia, were compared with those placed in general dental practice. The results revealed that the rate of bridge failure averaged 35.5%. This was made up from failure of bridges(More)
The cervical margins of crowns are often placed subgingivally to satisfy patients' demands for esthetics, even though subgingival margins can adversely affect gingival health. Photographs of 527 Saudi citizens (285 men and 242 women) with natural and exaggerated smiles were recorded to determine if subgingival margins are always necessary. The photographs(More)
The purpose of this study was to compare the effect of cyclic compressive forces on loosening of the abutment retaining screw of dental implant fixtures with two different antirotational designs using the finite element analysis. A three-dimensional model of externally hexed and trichannel dental implant fixtures with their corresponding abutments and(More)
In the second part of a two-part study on the necessity for subgingival crown placement, photographs of 527 Saudi citizens (285 men and 242 women) with natural and exaggerated smiles were made. The photographs revealed that a substantial percentage of the participants did not exhibit the gingival tissue of their posterior maxillary teeth (41.7% to 70.2%)(More)
The purpose of this retrospective study was to analyse firstly the prevalence of firsty fractured permanent incisors, secondly their distribution according to age, sex and socio-economic class and thirdly the location of the trauma, in a population sample of schoolchildren from Jordan. The sample consisted of 3041 children aged 7-12 years enrolled in 6(More)
This study demonstrates that Escherichia coli isolates from human stools showed mostly higher minimum inhibitory concentrations (MICs) and significant rates of resistance (32%-67%, P<0.05) than Escherichia coli water isolates in Jordan, as follows: ampicillin (67% vs 28%), trimethoprim/sulfamethoxazole (67% vs 28%) nalidixic acid (63% vs 20%), cefuroxime(More)
The relationship between bridge failure and the periodontal ligament area of their abutments was studied in 156 dental bridges constructed for 132 patients. Of the bridges constructed at the College of Dentistry, King Saud University, 26.9% did not meet the published criteria of Ante's Law while 50.0% of those made in general dental practice did not meet(More)
The comparative effects of enalapril (E) and nifedipine (N) on renal hemodynamics were assessed in twenty-two moderately hypertensive, cadaveric renal transplant patients who were maintaining stable renal function. Fourteen patients were on cyclosporin (CSA) and eight were receiving azathioprine with prednisolone (AZA). In each patient effective renal(More)