1.Mechanical and thermal properties of hydroxyaptite filled poly (methyl methacrylate) heat processed denture base material.
Mohamed SH ; Arifin A ; Mohd Ishak ZA ; Nizam A ; Samsudin AR
The Medical Journal of Malaysia 2004;59 Suppl B():25-26
The aim of this study was to evaluate the effect of powder-to-liquid ratio on the glass transition temperature (Tg) and the tensile properties of denture base material prepared from poly (methyl methacrylate) (PMMA) and hydroxyapatite (HA) previously treated with 3-trimethoxysilylpropyl methacrylate (gamma-MPS). Specimens for mechanical testing were prepared by adding composites powder (PMMA, BPO and HA) to the monomer (MMA and EGDMA) followed by hand mixing as in dental laboratory description usage. The glass transition temperature was studied by using differential scanning calorimetry (DSC). It was observed that the tensile properties and the Tg were affected by the powder-to-liquid ratio. The mechanical characterization of the materials were performed by using single edge notch-tension (SEN-T) specimens; the fracture toughness was slightly higher in formulation which contained HA filler compared to commercial denture base material.
Biomechanics
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Calorimetry, Differential Scanning
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*Denture Bases/standards
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*Durapatite
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*Materials Testing
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Microscopy, Electron, Scanning
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*Polymethyl Methacrylate
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Tensile Strength
2.Histopathological features of coeliac disease in a sample of Sudanese patients
MA Noha Mokhtar ; So Mekki ; Hmy Mudawi ; Sh Sulaiman ; MA Tahir,MA Tigani, Ilham A Omer ; Bm Yousif, Ishraga A Fragalla ; Zulfa Mohammed ; Mohamed Dafaalla
The Malaysian Journal of Pathology 2016;38(3):267-272
Introduction: Coeliac disease can occur at any age but is more common in children. Its diagnosis
requires correlation between clinical presentations, serological results, endoscopic findings and
histopathological classification using the modified Marsh grading system. This study of coeliac
disease with biopsies received in the department of histopathology at Soba University Hospital,
and Fedail Hospital aimed to gain insight into the demographic profile, clinical presentations and
histopathological classification of patients with coeliac disease. Methods: This was a descriptive
study carried out at Soba University Hospital and Fedail Hospital during the period from January
2010-December 2013. Haematoxylin & Eosin and CD3-stained slides of small intestinal biopsies of
coeliac disease patients were reviewed for various histological features (1) intraepithelial lymphocytes
(IEL) count per 100 enterocytes, (2) crypt hyperplasia and (3) degree of villous atrophy. Based
on the histopathological findings, the cases were categorized according to the modified Marsh
classification. Demographic and clinical data were obtained from the patient request forms. The
data were analyzed using Statistical Package for Social Sciences Software (SPSS). Results: The
study included 60 patients. Their age ranged from 2 to 70 years with a mean of 19.5 years (±15.7
SD). The most common age group was below 10 years old (41.6%). Male and female are equally
affected. The most common clinical presentation was chronic diarrhoea (55.0%), followed by iron
deficiency anemia (41.7%). The degree of villous atrophy ranged from complete atrophy (45.0%),
marked atrophy (38.3%) to mild atrophy (16.6%). Marsh grade IIIC was the most common grade.
The younger age-groups had a higher prevalence of iron deficiency anaemia and higher Marsh grade.
3.Cross Suturing Technique For Osteochondral Defect
Lim TC ; Teo SH ; Mohamed Al-Fayyadh MZ ; Mohamed Ali MR ; Ng WM
Malaysian Orthopaedic Journal 2018;12(Supplement A):205-
5.Prevention of renal dysfunction by nutraceuticals prepared from oil rich plant foods.
Sahar Y AL-OKBI ; Doha A MOHAMED ; Thanaa E HAMED ; Reham Sh ESMAIL ; Souria M DONYA
Asian Pacific Journal of Tropical Biomedicine 2014;4(8):618-627
OBJECTIVETo investigate the protective effect of extracts prepared from avocado, walnut, flaxseed and Eruca sativa seeds in a rat model of kidney dysfunction induced by intraperitoneal cisplatin.
METHODSEthanol and petroleum ether extracts mixture was prepared from each plant. Six groups of rats were conducted; control healthy, cisplatin group and four test groups where rats were given daily oral dose of each extract mixture before cisplatin injection. Different biochemical and cytogenetic parameters and kidney histopathology were determined. Acute toxicity was tested for the nutraceuticals. Total phenolic contents, fatty acids (FA) and unsaponifiable matter were assessed in the extracts.
RESULTSWalnut ethanol extract showed the highest content of total phenolic. FA analysis revealed that all the studied plants were rich in unsaturated FA. Gas-liquid chromatographic investigation of the unsaponifiable matter showed the presence of campesterol, stigmasterol and β-sitosterol in all the studied plants. Cisplatin treatment induced significant increase in plasma urea, creatinine and malondialdehyde along with significant reduction of plasma albumin, total protein, catalase and total antioxidant as well as reduction in creatinine clearance. Histopathological examination proved the induction of kidney dysfunction. Some sorts of chromosomal aberration and sperm-shape abnormalities were noticed after cisplatin treatment. Administration of extracts mixtures produced improvements in biochemical, histopathological and cytogenetic parameters.
CONCLUSIONSAdministration of the studied nutraceuticals proved to possess protective role against cisplatin-induced nephrotoxicity, chromosomal aberration and abnormal sperms. All studied nutraceuticals showed complete safety.
7.Synovial Chondromatosis Of The Knee Post Intra-Articular Injection
Chooi YJ ; Teo SH ; Mohamed Ali MR ; Ng WM ; Al-Fayyadh MZM
Malaysian Orthopaedic Journal 2018;12(Supplement A):209-
8.Distal Biceps Tendon Rupture Following Eccentric Loading Of The Elbow – A Case Report
Faheem NAN ; Teo SH ; Al-Fayyadh MZM ; Mohamed Ali MR ; Ng WM
Malaysian Orthopaedic Journal 2018;12(Supplement A):210-