Browse publications by year: 2018

Fulltext Synthesis, DFT computational studies and biomolecular interactions of 4-(2-fluorophenyl)thiosemicarbazide

Osman, U.M., Ku Bulat, K.H., Razali, M.H., Hashim, M.F.N., Fauzi, F.A., Juahir, Y.

ASM Science Journal, 2018;11(101):147-157.
MyJurnal

Herein, we report the synthesis of a thiosemicarbazide derivatives, namely 4-(2-
fluorophenyl) thiosemicarbazide from the reaction between 2-fluorophenyl isothiocyanate and
hydrazine hydrate. The isolated solid compound was elucidated from micro-elemental analysis
and IR spectroscopy. The structure of the molecule in the ground state was calculated
using density functional theory (DFT) method and basic set of 6-311G (d,p) was used to
calculate the energy gap (4Egap), hardness (η), softness (σ) and the global electronegativity
(χ). Its electrostatic potential mapping and frontier orbital energy analysis were also
discussed. The interaction of the molecule with selected proteins are investigated using
SwissTargetPrediction database.
Fulltext Conjoint experimental and theoretical evaluation of zinc (II) coordination polymer as potential anion receptors for nitrate and chromate

Kadir, M.A., Kassim, N., Ku Bulat, K.H., Mehamod, F.S.

ASM Science Journal, 2018;11(101):136-146.
MyJurnal

A paradigm shift in supramolecular chemistry has drawn our attention to produce coordination
polymers for anion separation. In this approach, we have successfully synthesized a
one dimensional coordination polymer from combination of U-shaped diamide ligand, namely
N,N -2,6-bis(4-pyridylmethyl)pyridine dicarboxamide (L1) and Zn(NO3)2 in methanol. This
product is obtained as single crystal with formula molecule given by elemental analysis as
{[Zn(L1)2(H2O)2](NO3)2.4H2O}n. In this account, we also describe supramolecular interactions
between this coordination polymer with two selected anions, nitrate and chromate
using combination of experimental and theoretical studies. Observation via FTIR spectra
indicates the presence of two distinctive peaks for Cr-O (931 cm−1
) and N-O (1384 cm−1
)
confirming encapsulation of chromate and nitrate anions in the receptor. X-ray crystallography
reveals the interaction between NH amide with the anions as expected. As resulted
by Gaussian, coordination polymer with nitrate anion is found more stable compared to
chromate with interaction energy 342.2729 kJ/mol.
Fulltext Elucidating mesomorphic and electrical properties of conjugated acetylide-imine as electrochemically deposited electron transporting materials in organic conductive film

Wan M. Khairul, Foong, Y.D., Lee, O.J., Lim, S.K.J., Daud, A.I., Rahamathullah, R., et al.

ASM Science Journal, 2018;11(101):124-135.
MyJurnal

A new class of liquid crystalline acetylide-imine system was successfully synthesized, characterized
and deposited on indium tin oxide (ITO) coated substrate via electrochemical deposition
method for potential organic film application. The relationship between liquid crystal
molecular structure, phase transition temperature and electrical performance was evaluated.
The mesomorphic properties were identified via polarized optic microscopy (POM) which displayed
fan-shaped texture of smectic A phase and their corresponding transition enthalpies
are in concurrence with DSC and TGA studies. The findings from the conductivity analysis
revealed that the fabricated film exhibits good electrical performance where it displayed
linear current-voltage relationship of I-V curve. Therefore, this proposed type of molecular
framework has given an ideal indication to act as transporting material for application in
optoelectronic devices.

MeSH terms: Electricity; Imines; Microscopy; Temperature; Molecular Structure; Tin Compounds; Transition Temperature; Phase Transition; Liquid Crystals
Fulltext Synthesis and adsorption studies for newly prepared Ni2+-imprinted polymer co-functionalized with picolinic acid

Mehamod, F.S., Kadir, M.A., Jusoh, N., Yusof, N.F., Suah, F.B.

ASM Science Journal, 2018;11(101):114-123.
MyJurnal

The development of new adsorbent has rapidly increased in order to overcome the problem
of waste water treatment from heavy metal pollution. The ability of nickel (II)-ion imprinted
polymer (Ni-IIP) as an alternative adsorbent for the removal of nickel ion from aqueous has
been investigated. The Ni-IIP was prepared via bulk polymerization by using functional
monomers; methylacrylic acid (MAA) with picolinic acid as a co-monomer. Nickel ion was
used as template, AIBN as initiator and EGDMA as cross-linking agent. Non-imprinted control
polymer (NIP) was prepared in the same manner as Ni-IIP but in the absence of nickel
ion. The resultant of Ni-IIP and NIP were characterized by using Fourier Transform Infrared
(FTIR) spectroscopy and Scanning Electron Microscope (SEM). Result showed that, the adsorption
of nickel ion onto Ni-IIP increased as the adsorbent dosage increased and contact
time is prolonged. The adsorption isotherm model for Ni-IIP and NIP were fitted well with
Freundlich and Langmuir, respectively. Kinetic study for both Ni-IIP and NIP were followed
the pseudo-second order, indicates that the rate-limiting step is the surface adsorption that
involves chemisorption. Selectivity studies showed that the distribution coefficient of Ni2+
was higher compared to Zn2+, Mg2+ and Pb2+. The present work has successfully synthesized
Ni-IIP particles with good potential in recognition of Ni2+ ions in an aqueous medium.

MeSH terms: Adsorption; Fourier Analysis; Ions; Microscopy, Electron, Scanning; Nickel; Nitriles; Picolinic Acids; Polymers; Water; Spectroscopy, Fourier Transform Infrared; Water Purification; Metals, Heavy; Polymerization; Waste Water
Fulltext Removal of methyl orange dye by manganese/aluminium-layered double hydroxide

Mamat, M., Abdullah, M.A.A., Jaafar, A.M., Soh, S.K.C., Lee, C.E.

ASM Science Journal, 2018;11(101):105-113.
MyJurnal

As textile production flourishes nowadays, the amount of dyed wastewater entering the
water body has also increased. Dyes could have serious negative impacts to the environment
and also the human health, hence, they need to be removed from the water body. In this
study, layered double hydroxide (LDH) of manganese/aluminium (MnAl) was synthesised
to be used as a potential adsorbent to remove methyl orange (MO) dye due to its unique
lamellar structure which provides LDH with high anion adsorption and exchange ability.
MnAl was synthesized by using co-precipitation method and characterized by powder X-ray
diffraction (PXRD), Fourier-Transform Infrared Spectroscopy (FTIR), Inductively coupled
plasma atomic emission spectroscopy (ICP-AES) and Carbon, Hydrogen, Nitrogen, Sulphur
(CHNS) elemental analysers, and Accelerated Surface Area and Porosity Analyzer (ASAP).
Adsorption studies were conducted at different contact times and dosages of MnAl to evaluate
the performance of MnAl in removing MO from water. Kinetic and isotherm models were
tested using pseudo-first order, pseudo-second order, Langmuir isotherm and Freundlich
isotherm. MnAl LDH was found to be perfectly fitted into pseudo-second order and Langmuir
isotherm.

MeSH terms: Adsorption; Aluminum; Azo Compounds; Carbon; Coloring Agents; Hydrogen; Hydroxides; Manganese; Nitrogen; Sulfur; Textiles; Water; X-Rays; Porosity; Spectroscopy, Fourier Transform Infrared; Waste Water
Fulltext Influence of alkylphosphonium modified montmorillonite to the tensile properties of PMMA composites

Abdullah, M.A.A., Mamat, M., Rusli, S.A., Kassim, A.A.

ASM Science Journal, 2018;11(101):96-104.
MyJurnal

Considering its excellent thermal stability, alkyl phosphonium surfactant: triisobutyl(methyl)phosphonium
(TIBMP) was used in this research as an intercalant for surface
modification of Na+-MMT via ion exchange process forming organomontmorillonite
(OMMT). The OMMT was then used as filler in poly(methyl methacrylate) (PMMA) via
melt intercalation technique. OMMT decomposed at a higher temperature than commercial
alkyammonium modified MMT. Exfoliated and intercalated types of nanocomposites
are obtained from PMMA/OMMTs at low and high content of OMMT loading, depending
on the space of those clay platelets had to disperse in PMMA. The ability of OMMT to
carry a certain load applied in PMMA matrix enhances the tensile strength in all composites.
TIBMP are compatible with PMMA matrix, and significantly improves the tensile
properties of PMMA composites.

MeSH terms: Aluminum Silicates; Blood Platelets; Ion Exchange; Pulmonary Surfactants; Surface-Active Agents; Temperature; Tensile Strength; Polymethyl Methacrylate; Nanocomposites
Fulltext Bimetallic PMMA@Alloy (Au-Ag) in 3D hot spots as highly sensitive substrate for high performance Surface-enhanced Raman Scattering (SERS)

Kassim, S., Tahrin, R.A.A., Rusdi, N.F., Harun, N.A.

ASM Science Journal, 2018;11(101):86-95.
MyJurnal

A feasible production of poly (methyl methacrylate)@alloy (gold-silver) core shell has
been presented as candidate in enhanced detection of surface enhanced Raman scattering
(SERS). Free emulsifier- emulsion synthesised PMMA sphere with average size of 419 nm in
diameter were used as core material for incorporation of alloy nanoparticles (6 nm) resulting
a core-shell structure. The fabrication of PMMA@alloy SERS substrate was successfully
done via self-assembly thus the produced SERS substrate that comprise of unique optical
properties combination arising from periodic core arrangement and plasmonic activity of
alloy nanoparticles. Alloy is bimetallic nanoparticles in which the combination of silver
(Ag) and gold (Au) present an absolutely improved light resistance as compared to single
metal alone with great surface plasmon resonance. Morphology and elemental analysis was
performed through scanning electron microscope (SEM) and the analysis showing species of
both Au and Ag in single alloy nanoparticles. The alloy nanoparticles were also observed to
homogenously coating the PMMA sphere. Surface plasmon resonance activity was maximum
at 476 nm obtained from UV-Visible spectroscopy. High surface production was observed
to have periodically arranged PMMA@alloy core -shell and potentially to be used as SERS
substrate.

MeSH terms: Alloys; Emulsions; Gold; Methacrylates; Microscopy, Electron, Scanning; Silver; Spectrophotometry, Ultraviolet; Spectrum Analysis, Raman; Polymethyl Methacrylate; Surface Plasmon Resonance; Emulsifying Agents; Metal Nanoparticles
Fulltext Structural and optical properties of heat treated Zn2SiO4 composite prepared by impregnation of ZnO on SiO2 amorphous nanoparticles

Engku Ali, E.A.G., Matori, K.A., Saion, E., Aziz, S.H.A., Zaid, M.H.M., Alibe, I.M.

ASM Science Journal, 2018;11(101):75-85.
MyJurnal

In this study, Zn2SiO4 composite-based ceramic was synthesised using amorphous SiO2
nanoparticles as a silicon source. Different ratios of Zn:Si were prepared by mixing amorphous
SiO2 nanoparticles with aqueous zinc nitrate. Amorphous SiO2 nanoparticles were
encapsulated by the zinc source in aqueous solution, dried, and subjected to heat treatment.
The heat treatment underwent by the amorphous SiO2 nanoparticles, with zinc source mixture,
showed the changing of phases, morphology, and size with increased temperature. ZnO
phase appeared at the beginning of heat treatment and Zn2SiO4 phase started to emerge at
800◦C onwards, as shown by XRD patterns. The average crystallite size increases from 37
nm at 600 ◦C to 68 nm at 1000 ◦C. The spherical morphology was observed at 600 and 700
◦C, but at temperatures higher than 800 ◦C, the dumbbell or necking-like structures formed.
Optical band gap analysis of Zn2SiO4 composite was determined to be within the range of
3.12 ± 0.04 to 3.17 ± 0.04 eV. The photoluminescence of treated samples showed emission
peaks at 411 and 455 nm wavelengths from ZnOs blue band and at 528 nm wavelength from
Zn2SiO4
0
s green band. The diffusion of zinc ions into Zn2SiO4 composite with high surface
area will favour the diffusion at a much lower temperature compared to a conventional solid
state method.
Fulltext Effect of HNO3 concentration on etch rate and structure of Si wafer etched in the mixture of HF and HNO3 solutions

F. Nurhaziqah K., Sheng, C.K., Amin, K.A.M., Isa, M.I.N., Hassan, M.F., Ali, E.A.G.E., et al.

ASM Science Journal, 2018;11(101):68-74.
MyJurnal

The new microelectronic products require the silicon (Si) wafer to be thinned to less than
150 µm in thickness. Residual defect on the wafer surface that leads to wafer breakage with
a rough surface still be produced by mechanical grinding. Thus, chemical etching method is
essentially applied to produce a reliable thin wafer with smooth surface of desired thickness.
In this work, we studied the wet chemical etching effect of different HNO3 concentrations on
total thickness and weight loss, etch rate, morphological and structural properties of Si wafer
in the mixtures of HNO3 and HF. The results showed that the total thickness and weight
loss increases with the increasing of HNO3 concentration and etching time. Higher HNO3
concentration causes higher etch rate, and the etch rate decreases at prolonged etching time.
A smoother and clearer homogeneous Si surface image was observed by optical microscope as
the etching time and HNO3 concentration increase. XRD analysis shows that the intensity
of etched Si wafer is higher than the pure one, which might indicate the smoother surface
formation after etching. The findings of present study can be valuably referred to produce
a reliable and desired Si thin wafer which is crucial in integrated circuit fabrication.
Fulltext Effect of ZnO-PEDOT:PSS incorporation in epoxy based coating on corrosion behaviour in immersed condition

Nur Ain, A.R., Mohd Sabri, M.G., Wan Rafizah, W.A., Nurul Azimah, M.A., Wan Nik, W.B.

ASM Science Journal, 2018;11(101):56-67.
MyJurnal

Corrosion is a natural deterioration process that destructs metal surface. Metal of highly
protected by passivation layer such as Stainless Steel 316L also undergoes pitting corrosion
when continuously exposed to aggressive environment. To overcome this phenomenon, application
of epoxy based coating with addition of zinc oxide- poly (3,4-ethylenedioxythiophene)
doped with poly (styrene sulphonate) hybrid nanocomposite additive was introduced as
paint/metal surface coating. The compatibility between these two materials as additive
was studied by Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD),
Field Emission Scanning Electron Microscopy/Energy-Dispersive X-ray spectroscopy (FESEM/EDX)
and Transmission Electron Microscopy (TEM) analysis. The effect of nanocomposite
wt.% in epoxy based coating with immersion duration in real environment on corrosion
protection performance was analyzed through potentiodynamic polarization analysis. The
main finding showed that addition of hybrid nanocomposite had increased corrosion protection
yet enhanced corrosion process when excess additives was loaded into epoxy coating.
Addition of 2 wt.% ZnO-PEDOT:PSS was found significantly provided optimum corrosion
protection to stainless steel 316L as the corrosion rate for 0 day, 15 days and 30 days of
immersion duration is 0.0022 mm/yr, 0.0004 mm/yr and 0.0015 mm/yr; respectively.

MeSH terms: Corrosion; Epoxy Resins; Microscopy, Electron, Scanning; Paint; Spectrometry, X-Ray Emission; Stainless Steel; X-Ray Diffraction; X-Rays; Zinc Oxide; Spectroscopy, Fourier Transform Infrared; Styrene; Microscopy, Electron, Transmission; Nanocomposites
Fulltext 2-hydroxyethyl cellulose as natural binder in electrodes for solid-state proton battery: construction and preliminary results

Ramlli, M.A., Isa, M.I.N., Yu, K.X., Siew, Y.W.

ASM Science Journal, 2018;11(101):47-55.
MyJurnal

Affordable and greener materials were extensively studied in electrode fabrication for Liion
based batteries but less interest was shown to proton battery. Hence, in this work,
a methodology on preparing a natural based binder for proton battery was reported. 2-
Hydroxyethyl Cellulose (2HEC) was chosen to replace PVDF commercial binder in electrode
for ZnSO4|MnO2 proton battery configuration. SEM image shows good surface formation
for both anode and cathode with good porous structure. OCV result shows that the cell
improved the stable voltage of reference cell of 0.7 V to 0.9 V after 24 hours. The first
discharge of the cell took 6 hours and 49 minutes at 0.005mA and shows good potential for
rechargebility test.

MeSH terms: Cellulose; Electrodes; Polyvinyls; Electric Power Supplies; Protons
Fulltext X-ray diffraction and infrared spectroscopic analysis of solid biopolymer electrolytes based on dual blend carboxymethyl cellulose-chitosan doped with ammonium bromide

Mejenom, A.A., Hafiza, M.N., Isa, M.I.N.

ASM Science Journal, 2018;11(101):37-46.
MyJurnal

The present work discusses the structural studies of dual blended solid biopolymer electrolytes
(SBEs) based carboxymethyl cellulose (CMC)/chitosan (CS) doped with various
ammonium bromide (AB) composition using solution casting technique. X-ray Diffraction
(XRD) result reveal that all samples are completely amorphous except for sample Ab-30.
FTIR analysis shows interaction has occurred between CMC/CS and NH4Br. Analysis of
transport properties has shown that the dependency of ionic conductivity was on the ionic
mobility, µ and diffusion coefficient, D of mobile ion.
Fulltext Lightweight and flexible solid-state EDLC based on optimized CMC-NH4NO3 solid bio-polymer electrolyte

Kamarudin, K.H., Isa, M.I.N., Hassan, M.

ASM Science Journal, 2018;11(101):29-36.
MyJurnal

Supercapacitors attract great interest among researchers as energy storage devices due to
their high power capability and long cycle life. In this research, the electrochemical performance
of electrical double layer capacitor (EDLC) based solid bio-polymer electrolyte
(SBE) was studied. SBE consists of carboxymethyl cellulose (CMC) and ammonium nitrate
(NH4NO3) was prepared by solution casting technique. The electrical impedance spectroscopy
was used to verify the conductivity of SBE. The average conductivity was achieved
at ∼ 10−3 S/cm. This research aims to prepare SBE and apply in the fabrication of EDLC.
Scanning electron microscopy analysis showed the smooth and homogeneous surface of SBE
film without any phase separation, while irregular shape and sizes of particles was found
on the surface of electrode. Elemental identification results yielded that all corresponding
elements presence in the SBE and electrode. The EDLC performance was characterized
using galvanostatic charge-discharge at different constant currents. Charge-discharge studies
showed that long discharge time (90 minutes) within 11 cycle was observed at 2µA. The
highest specific capacitance of 1.8 F/g was discovered at 4µA. This study showed that EDLC
based SBE has a promising potential to be applied in low current applications.
Fulltext Solid polymer electrolytes based on starch-magnesium sulphate: study on morphology and electrical conductivity

Hassan, M.F., Azimi, N.S.N., Kamarudin, K.H., Sheng, C.K.

ASM Science Journal, 2018;11(101):17-28.
MyJurnal

Solid polymer electrolytes based on starch as a polymer host and Magnesium Sulphate
(MgSO4) as an ionic dopant were successfully prepared by a single-solvent via solution casting
technique. As determined by XRD and FTIR analyses, the solid polymer electrolyte films
were in amorphous phase and the coexistence of peaks of the materials (starch and MgSO4)
confirming that the complex films were successfully obtained. The SEM observations showed
the films appeared to be rough and flat shape of surface. The highest ionic conductivity (σ)
of 8.52 ×10−5 S cm−1 was achieved at room temperature (303K) for the sample containing 35
wt.% MgSO4. The presented results revealed that the as-prepared solid polymer electrolyte
has the potential as dual functional compound in electrochemical storage application.
Fulltext The effect of Sm2O3 nanoparticle inclusion on superconducting properties of YBCO ceramics

Aima, R., Halim, S.A., Chen, S.K., Awang Kechik, M.M.

ASM Science Journal, 2018;11(101):8-16.
MyJurnal

Polycrystalline samples of YBa2Cu3O7−δ added with small amounts (x = 0.0 - 1.0 wt%)
of Sm2O3 nanoparticles were synthesized via co-precipitation process. The effects of addition
of Sm2O3 nanoparticles on the superconducting properties and crystal structure of
YBa2Cu3O7−δ were thoroughly elucidated. The superconducting transition temperature
(Tc) of each sample was measured by a standard four point probe method. As the addition
of nano-Sm2O3 increases, the reduction of Tc occur from 92 K for x = 0.0 to 80 K for x =
1.0 wt% attributable to oxygen vacancy disorder. The crystal lattice parameters of all samples
were determined by X-ray diffraction (XRD) with the Rietveld refinement technique. It
was found that the samples are predominantly single phase perovskite structure Y-123 with
orthorhombic, small amount of Y-211 and unreacted Sm2O3 secondary phases for samples
x = 0.2 - 1.0 wt%. Besides, the structure from SEM images showed that the structure becomes
more porous than the pure sample and the grain sizes are getting slightly decrease
as the addition of Sm2O3 nanoparticles increase. The addition of nano-Sm2O3 disrupts the
grain growth of YBCO (123), therefore resulting in the degradation of microstructure and
superconducting properties of the samples.
Fulltext Structural manipulation of YBa2Cu3O7-δ(YBCO) superconductors via melt-textured growth with BaTiO3 epitaxial seed

Jawari, M.S.A., Chen, S.K., Halim, S.A., Talib, Z.A., Lee, O.J.

ASM Science Journal, 2018;11(101):1-7.
MyJurnal

Exploiting the merits of superconducting properties, a series of thermal profile was employed
to modify the melt-textured growth of Y−Ba−CuO bulk with BaTiO3 epitaxial
crystal seed. Two thermal routes were used whereby multiple heatings of the samples were
conducted at 940 ◦C and 960 ◦C before elevating to 1040 ◦C and 1070 ◦C, respectively. Our
finding shows that the optimum melt-textured growth window is narrow within the temperature
range of 1010−1040 ◦C. Above the peritectic temperature, partial decomposition of
YBa2Cu3O7−δ (Y123) into YBa2Cu3O5 (Y211) leads to the formation of Y211 multigrains
embedded in the matrix of Y123. The values of Tc for the superconducting Y123 obtained
using the two routes are 78 K and 71 K. The lower Tc suggests the presence of structural
distortion and non-stoichiometry of the samples.
Fulltext Optimizing the multidimensional aspects of the patient-physician relationship in the management of inflammatory bowel disease

Chew D, Zhiqin W, Ibrahim N, Ali RAR

Intest Res, 2018 10;16(4):509-521.
PMID: 30369231 DOI: 10.5217/ir.2018.00074

The patient-physician relationship has a pivotal impact on the inflammatory bowel disease (IBD) outcomes. However, there are many challenges in the patient-physician relationship; lag time in diagnosis which results in frustration and an anchoring bias against the treating gastroenterologist, the widespread availability of medical information on the internet has resulted in patients having their own ideas of treatment, which may be incongruent from the treating physicians' goals resulting in patient physician discordance. Because IBD is an incurable disease, the goal of treatment is to sustain remission. To achieve this, patients may have to go through several lines of treatment. The period of receiving stepping up, top down or even accelerated stepping up medications may result in a lot of frustration and anxiety for the patient and may compromise the patient-physician relationship. IBD patients are also prone to psychological distress that further compromises the patient-physician relationship. Despite numerous published data regarding the medical and surgical treatment options available for IBD, there is a lack of data regarding methods to improve the therapeutic patient-physician relationship. In this review article, we aim to encapsulate the challenges faced in the patient-physician relationship and ways to overcome in for an improved outcome in IBD.

MeSH terms: Anxiety; Anxiety Disorders; Frustration; Goals; Humans; Physician-Patient Relations; Stress, Psychological; Inflammatory Bowel Diseases; Internet; Gastroenterologists
Fulltext Community Needs Assessment in Relation to Urban Heat Effects: A Study in Greater Kuala Lumpur, Malaysia

Wong LP, Alias H, Aghamohammadi N, Nik Sulaiman NM

Biomed Environ Sci, 2018 09;31(9):705-711.
PMID: 30369349 DOI: 10.3967/bes2018.095
MeSH terms: Adult; Aged; Aged, 80 and over; Cities; Construction Materials/statistics & numerical data; Female; Hot Temperature*; Humans; Malaysia; Male; Middle Aged; Transportation/statistics & numerical data; Urban Population/statistics & numerical data*; Needs Assessment/statistics & numerical data*; Information Dissemination; Young Adult
New Evidence Showing yet another Link between Sight-Threatening Diabetic Retinopathy and Obstructive Sleep Apnea: How Relevant is this to my General Practice?

Chidambaram R

J Coll Physicians Surg Pak, 2018 Nov;28(11):893.
PMID: 30369389 DOI: 10.29271/jcpsp.2018.11.893
MeSH terms: Diabetes Mellitus, Type 2/complications*; Diabetes Mellitus, Type 2/physiopathology; Diabetic Retinopathy/complications*; Diabetic Retinopathy/physiopathology; Humans; Vision Disorders/etiology*; Disease Progression; Sleep Apnea, Obstructive/physiopathology*; General Practice
Fulltext Assessment of the success rate of endodontically treated patients attending outpatient polyclinic

Mustafa NS, Kashmoola MA, Majeed KRA, Qader OAJA

Eur J Dent, 2018 10 30;12(4):540-545.
PMID: 30369800 DOI: 10.4103/ejd.ejd_377_17

Objectives: The aim of this study is to determine the success rate of the endodontically treated teeth in patients attending the Polyclinic, Kulliyyah of Dentistry, International Islamic University Malaysia (IIUM), from 2012 to 2015.
Materials and Methods: A retrospective study involved endodontically treated teeth of patients attending the Polyclinic, Kulliyyah of Dentistry, IIUM, from 2012 to 2015. Clinical and radiographic data were recorded and classified as successful or failed, and further analyzed by Fisher's exact test to measure the correlation between the variables using SPSS software version 16.0. Kappa test was used to measure the overall relationship between clinical and radiographic findings.
Results: A total of sixty teeth were evaluated clinically and radiographically, the overall success rate was 85% (n = 51). Correlation between the variables showed nonsignificant (P > 0.05) in the success rate among age, gender, and race, upper and lower arches and between anterior and posterior teeth at the time of treatment. At postendodontic fixed restorations, the variables showed statistically significant relationship with the success rate (P < 0.05).
Conclusions: Patients with no signs and symptoms and with no radiographical changes at the the time of clinical examination, showed the highest percentage of success rate (85%) of postendodontic fixed restorations. Age, gender, and race have no significant relations with the success rate of endodontically treated teeth.

MeSH terms: Dentistry; Humans; Malaysia; Physical Examination; Radiography; Retrospective Studies; Software; Tooth; Universities; Tooth, Nonvital

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