Abdulhaq Suliman

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• BDS, MS, MS, PhD
• Professor (Full) at Ajman University

Background Providing accurate and sufficient information is a crucial requirement for delivering effective diabetes care, making it essential for community pharmacists to possess adequate knowledge of diabetes mellitus (DM) and its management. Objective To investigate community pharmacists’ level of expertise and engagement in providing counseling...

Statement of Problem Limited evidence is available for the effect of chairside adjustment using rotary cutting instruments on the surface roughness and optical properties of different zirconia types. Purpose To evaluate the effect of simulated adjustments on surface roughness and optical properties of different zirconia types. Materials and Metho...

Objective: The purpose of this review was to provide dental professionals with information regarding the various types of zirconia restorations, their mechanical and optical properties, tooth preparation design, and bonding protocol in an effort to enhance the longevity and durability of zirconia restorations. Overview: The yttria content of zir...

Background: Community pharmacists play an intermediary role between prescribing physicians and patients in the United Arab Emirates (UAE) and thus are responsible for ensuring that patients receive optimal cardiovascular disease (CVD) pharmaceutical care. Methods: we used a cross-sectional design to assess the perceptions and practices of community...

Statement of problem: To fully maximize the potential of dual-polymerizing resin cements, a thorough understanding of how the light- and chemical-polymerizing components interact in a resin system is required. Disorder in the polymerization process between the two components may hurt one of the components versus the other, affecting the overall pr...

Objectives: The aim of this in vitro study was to assess the physical and mechanical properties of resin cements to ceramic substrate using different curing modes by evaluating the degree of conversion and bond strength of these cements. Methods: Hundred twenty square lithium disilicate ceramic discs specimens of three thicknesses (0.5, 1 and 1.5 m...

Introduction: The effectiveness of root canal therapy in endodontic practice is largely determined by providing a compact fluid-tight closure at the apex of the root canal, which inhibits irritant entry and buildup, which leads to a biological breakdown of the attachment mechanism and failure. During obturation, along with gutta-percha, root canal...

Objectives Bulk-fill resin composite is commonly used in direct restorations. It is recommended that the high-viscosity version of these materials be preheated to improve flowability and adaptability. It is unknown what effects preheating (PH) might have on the wear resistance and color stability of these resin composites. This study compared the w...

Objective: Resin-based materials used in restorative dentistry are introduced at a fast pace with limited knowledge about their properties. Comparing properties of these materials from different restorative categories is lacking but can help the clinician in material selection. This study aimed to compare mechanical properties and wear resistance o...

Objective To evaluate the prevalence, knowledge, attitude and acceptance of the COVID-19 vaccines and related factors among university students in the United Arab Emirates. Methods Analytical cross-sectional study undertaken among a convenient sample of medical and non-medical colleges of Ajman University using a self-administrated questionnaire....

Residential and commercial buildings consume over a third of the world's total energy. The residential sector accounts for most energy use in the Gaza Strip, necessitating the development of feasible energy-saving techniques. Herein, a simulation-based study has been prepared to examine the integration of some practical passive design strategies in...

Objectives During the light-curing process of composite restoration, excessive heat can be produced, which can potentially lead to pulp necrosis (death). In this study, we aimed, based on the Finite Element Method (FEM), to assess the risk of pulp damage during the light-curing process by investigating the influence of light-curing devices, under v...

Background: Internally Displaced People (IDPs), They have been forced from their homes for many of the same reasons as refugees, but have not crossed an international border. The aim of this study was to describe the dental caries and periodontal health status of (15-19) year-old Internally Displaced People (IDPs) students living inside camps in Du...

Objective Shade selection is a crucial step in achieving aesthetically-pleasing restorations, and it is affected by the dentist’s ability to match the shade of the patient’s teeth. Color Deficiency Disease (CVD) has been thought to be a potential factor affecting color perception. The study aims to find the prevalence of CVD between dentists and de...

Objective: Compare optical properties of a bisacryl-, composite-, and ceramic-resin restorative materials pre and post artificial aging. Methods: Bisacryl-resin (LuxaCrown [LC], DMG), resin-composite (Filtek Supreme Ultra, [Filtek SU] 3M ESPE), and ceramic-resin (Enamic, VITA Zahnfabrik) specimens were prepared. The L*, C*ab , and hab values wer...

Objective To determine color and translucency stability of present‐day resin‐based restorative materials. Materials and methods Disk‐shaped (1.0 × 10 mm) resin composites (Filtek Universal, 3M ESPE; Spectra ST, Dentsply Sirona; Gradia Direct X, GC America; Estilite Quick, Tokuyama; Harmonize, Kerr; ACTIVA Bioactive‐Restorative, Pulpdent) were prep...

Objectives To assess restorative treatment decisions on approximal caries by dental practitioners in College of Dentistry at Ajman University regarding treatment threshold, restorative techniques and restorative materials, and to evaluate the characteristics of dentists relative to their treatment decisions. Materials and Methods Questionnaires we...

Background: Vibration decreases the viscosity of composite, making it flow and readily fit the walls of the cavity. This study is initiated to see how this improved adaptation of the composite resin to the cavity walls will affect microleakage using different curing modes Materials and methods: Standard Class V cavities were prepared on the buccal...

Background: Light-curing is a crucial step during the application of composite resin restorations. Composite's success depends on delivering enough light energy to the resin to achieve adequate polymerization. However, dentists are not recognizing the importance of proper light-curing technique. Objectives: To measure light energy delivered to s...

Aim: This study aimed to improve our understanding regarding attention-deficit hyperactivity disorder (ADHD) awareness among dental care providers of Ajman University (AU), and also to identify factors that are highly associated with an increased awareness toward ADHD. Materials and methods: This is a cross-sectional survey study designed and ca...

Background Light-curing is a crucial step during the application of composite resin restorations. The clinical success of composite depends on the Light-Curing Units (LCU) to deliver adequate light energy to polymerize the resin. However, light-curing usually does not receive the proper awareness it deserves. Objective This study aims to evaluate...

PREVALENCE OF DIABETES, HYPERTENSION AND OBESITY AND ASSOCIATED FACTORS AMONG STUDENTS OF AJMAN UNIVERSITY, UNITED ARAB EMIRATES Moyad Shahwan *, Haya Yasin, Zehra Edis, Abdulhaq Suliman, Reem Al-Azawi, Saghar Mohammadi, Momene Noor College of Pharmacy and Health Sciences, Ajman University, Ajman, United Arab Emirates *Corresponding Author Email: M...

Effects of Home-Bleaching and In-Office-Bleaching on Enamel Micro-hardness

EFFECT OF LIGHT ACTIVATION OF BLEACHING AGENT ON WHITENING EFFICACY AND INTRA-PULPAL TEMPERATURE RISE

Objective : This in vitro study was designed to measure the temperature rise and shade changes by using light enhanced bleaching (diode laser or LED lights). Methods: Fifty extracted human premolars were cleaned and sectioned from mid-root area. The teeth were divided randomly into 5 groups (n=10) and subjected to bleaching enhanced with light-ac...

Objective : This in vitro study was designed to measure the temperature rise and shade changes by using light enhanced bleaching (diode laser or LED lights). Methods: Fifty extracted human premolars were cleaned and sectioned from mid-root area. The teeth were divided randomly into 5 groups (n=10) and subjected to bleaching enhanced with light-acti...

Objectives: The purpose of this study was to evaluate the effects of 10% carbamide peroxide (home-bleaching), and 35% hydrogen peroxide (in-office bleaching) on enamel micro-hardness.Methods: Fifty extracted anterior teeth divided into two groups, Group A =25 (home bleaching,( Zoom Nite white bleaching) and Group B =25 in-office bleaching (Beyond ™...

Objectives: Invasive caries removal should be kept to a minimum. Chemomechanical caries removal is one of several alternative methods to conventional caries excavation that have been used and involves the selective removal of soft carious dentin and preservation of the sound dentin. The purpose of this study is to determine whether complete caries...

The present study shows the description on the situation of Dental Faculty members in 2004, in terms of the development of the concept of the Information Technology (IT). The strategy of questionnaires has been treated in this study to see the aspects of training needs responded by the faculty members and what type of the modules they seek to take....

The Vickers hardness of dentin at the cavity floor after in vitro removal of caries with Carisolv™ gel and the microhardness of sound dentin was evaluated. The carious dentin of 18 extracted human permanent molars was removed using Carisolv™ for one minute. Caries removal was verified according to the colour and hardness of the lesion. The Vickers...

Aim: To examine the efficacy of chemo–mechanical dentin removal method in vitro. Material and Methods: Forty eight extracted permanent teeth with occlusal caries. The dentin caries of each tooth was removed either with chemo–mechanical method using Carisolv™ or mechanically using round bur. Cutting and caries removal monitored by checking the hardn...

Aims: to determine the bactericidal efficiency of 0.75% Chlorhexidine in vitro. The time required for this irrigant to start its antimicrobial effect on the selected microorganisms isolated from the infected root canals and unidentified samples taken from root canals with necrotic pulps were evaluated. Materials and Methods: The substantive antimic...

Aims: To evaluate the effect of amalgam alloy types, surface treatments, bonding agents, on the shear bond strength between set amalgam and resin composite restorative materials. Materials and Methods: Three hundred and thirty eight holes (6 mm in diameter and 2 mm depth) prepared in a 2x2.5 cm cold cure acrylic resin blocks in which amalgam was co...

ABSTRACTAim: To investigate the incidence and the morphology of third root for the mandibular permanent firstmolars from indigenous Iraqi population and their significance in the successful of endodontictreatment. Materials and Methods: A clinical, radiographical prospective evaluation of firstmandibular permanent molar teeth (n= 788) and laborator...

ABSTRACT Aims: to determine the bactericidal efficiency of 0.75% Chlorhexidine in vitro . The time required for this irrigant to start its antimicrobial effect on the selected microorganisms isolated from the infected root canals and unidentified samples taken from root canals with necrotic pulps were evaluated. Materials and Methods: The substanti...

Aim: To measure the temperature rise induced by a light emitting diode (LED) curing unit and by quartz tungsten halogen (QTH) curing unit using two types of composite resin XRV Herculite and Venus. Materials and Methods: Forty extracted non–carious single canal premolars were cleaned and bisected longitudinally. Class V preparations were cut on the...

Effects of Composite Thickness on Shear Bond Strength to Dentin Sixty no-carious extracted human molars were used in this study. The enamel on the occlusal surface of the crown of the tooth was removed by a diamond bur then the surfaces of the teeth were ground flat. The teeth were randomly divided into six groups each of ten and then stored in di...

ABSTRACT The present study was designed to determine the bactericidal efficiency of 0.75% chlorhexidine in vitro and in vivo. The time required for this irrigant to start its antimicrobial effect on the selected microorganisms isolated from the infected root canals and unidentified samples taken from root canals with necrotic pulps is evaluated. T...

Aims: To evaluate the effect of amalgam alloy types, surface treatments, bonding agents, on the shear bond strength between set amalgam and resin composite restorative materials. Materials and Methods: Three hundred and thirty eight holes (6 mm in diameter and 2 mm depth) prepared in a 2x2.5 cm cold cure acrylic resin blocks in which amalgam was co...

The aim of this study was to evaluate the common errors that may occur during crown and bridge construction. Four hundred stone models were used in this study for fabrication of 265 bridges and 135 single crown. The total number of units was 1141. Four main parameters were evaluated for each stone model: General information about the case, the cond...

The aim of this in vitro study is to evaluate the fracture resistance of pre-molars with three surface amalgam restorations. Fifty premolars were used, and divided into five groups. The teeth in group one remains intact whereas the teeth in the second group prepared and not restored. The teeth in the third group prepared and restored with amalgam o...

Zinc oxide-eugenol is widely used in the dental profession as a temporary restorative material, cavity liner, luting agent. This material possesses some antimicrobial effect. The aim of this study is to evaluatein vitro.the an.timicrobial effect of an Iraqimadezincoxidepowderand liquid. Two other cements were also used in this study, which are S. S...

Following the introduction of the direct bonding of orthodontic brackets to enamel, numerous studies were designed to investigate the bonding characteristics of various adhesive systems. In these studies, different tooth types were used for testing including, incisors, premolars and molars. A confounding factor was related to the effect of using di...

The unique memory property of thermodynamic wire is only partially understood. It is believed to result from the wire's inherent capability to markedly alter its atomic bonding forces as a function of temperature. This shape recovery phenomenon may be the result of a transition in crystal structure that occurs by deformation and cooling. When the t...

Polymerization shrinkage of two posterior composite resin restorative materials was measured by dilatometry. The results were compared with a decrease in cavity width of MOD preparations in extracted premolars restored with the composite resins. A highly filled hybrid composite exhibited greater free shrinkage and cuspal deformation than a hybrid c...

Various whitening/bleaching systems have been introduced on the market, including an over-the-counter external bleaching material, containing carbamide peroxide. It has been suggested that the process might alter the enamel surface structure in a manner similar to acid etching. Orthodontists are interested in determining whether the process will al...

A Michelson interferometry apparatus was used for measurement of the displacement of the buccal cusps of premolars after restoration of MOD preparations with composites. The effects of composite type, cavity size, and hydration conditions were examined. Interferometry permitted real-time measurement of cusp movement as it occurred. Contraction occu...

This study evaluated porcelain repair by use of various surface treatments and hydrophilic bonding resins. The surface treatments were air abrasion (sandblasting), roughening with a diamond, etching with 9.6% hydrofluoric acid, and a combination of the latter two methods. A silane coupling agent was applied to all porcelain surfaces, and composite...

This study examined the effect of cavity size, hydration conditions and type of composite on cusp movement following placement of MOD composite restorations in vitro. A microscope with a micrometer stage was used to measure deflection of cusps for 14 days after initiation of curing. The intercuspal width decreased for the first few minutes after th...

Due to its lasting esthetic results, the use of percelain has been increasing in Dentistry. Porcelain has two main disadvantages: it is vulnerable to shear stresses and is difficult to repair. When fractures occur, they must be repaired intraorally. Since it is not feasible to repair porcelain with the same material, a bonding system is needed for...

This study investigated the sealing properties of various combinations of base materials. Three chemically cured and three light-activated base materials were combinationally used to make 15 sample groups. The samples were thermocycled and immersed in 0.05% crystal violet solution for 1 hour. They were then embedded in clear casting resin, sectione...

This study investigated the effect of salivary contamination on glass-ionomer/resin-composite bond strength after establishment of an appropriate etching and rinsing time for the glass-ionomer cement. Three hundred and thirty samples of glass-ionomer cement (Ketac-Fil) were injected into cavities prepared in acrylic molds. Groups containing 15 samp...

Purpose: To evaluate water sorption of three resin-based restorative materials over 180 days of storage in de-ionized water. Materials and Methods: Three disks (12.0 mm in diameter and 1.25 mm in thickness) were prepared for each light-cured resin-based material; a polyacid-modified resin composite (élan), an organically modified ceramic (Definite)...