Khan S Q

Imam Abdulrahman Bin Faisal University · College of Dentistry

Purpose To compare the strength, surface roughness, and hardness of newly introduced permanent three‐dimensional (3D)‐printed resin in comparison with computer‐aided design and computer‐aided manufacturing (CAD‐CAM) milled materials. Materials and Methods Three 3D‐printed resins (NextDent C&B, Formlabs Permanent Crown, and VarseoSmile Crown plus)...

Computer-aided design/computer-aided manufacturing (CAD-CAM) technology is growing in significance for prosthodontic treatment due to its impact on clinical performance and patient outcomes. It has been integrated into dental education to allow students to experience digital workflows. Despite these advancements, many dental students still lack suf...

This meta-analysis investigated the prevalence of dental caries throughout the Kingdom of Saudi Arabia (KSA) between 2011 and 2023 as a follow-up to a previously published review in 2013 by Khan et al. and aimed to provide an update on the current status of caries prevalence in the KSA. A literature search was conducted, and thirty-three articles w...

Three-dimensionally (3D)-printed fabricated denture bases have shown inferior strength to conventional and subtractively fabricated ones. Several factors could significantly improve the strength of 3D-printed denture base resin, including the addition of nanoparticles and post-curing factors. This study evaluated the effect of TiO 2 nanoparticle (T...

Objective: The current study was conducted to determine whether people will keep practicing physical distancing behavior as part of their daily lives after the end of the COVID-19 pandemic. Materials and Methods: A structured questionnaire was prepared online using "QuestionPro" software for surveys, and the study was conducted electronically. The...

Citation: Khattar, A.; Alghafli, J.A.; Muheef, M.A.; Alsalem, A.M.; Al-Dubays, M.A.; AlHussain, H.M.; AlShoalah, H.M.; Khan, S.Q.; AlEraky, D.M.; Gad, M.M. Antibiofilm Activity of 3D-Printed Nanocomposite Resin: Impact of ZrO 2 Nanoparticles. Nanomaterials 2023, 13, 591. https://doi. Abstract: Poly(methyl methacrylate) (PMMA) is a commonly used mat...

Citation: Gad, M.M.; Albazroun, Z.; Aldajani, F.; Elakel, A.M.; El Zayat, M.; Akhtar, S.; Khan, S.Q.; Ali, S.; Rahoma, A.M. Repair Bond Strength of Conventionally and Digitally Fabricated Denture Base Resins to Auto-Polymerized Acrylic Resin: Surface Treatment Effects In Vitro. Materials 2022, 15, 9062. https://

Phonetics plays a major role in the fabrication of prostheses. This study aimed to assess the knowledge of students regarding the role of phonetics in denture fabrication and to improve the educational process and the clinical application. The study was conducted at the College of Dentistry, Imam Abdulrahman Bin Faisal University, and involved a su...

This study investigated the translucency of 3D-printed denture base resins modified with zirconium dioxide nanoparticles (ZrO2NPs) under thermal cycling. A total of 110 specimens were fabricated and divided into 3 groups according to the materials, i.e., heat-polymerized resin, and 3D-printed resins (NextDent, and ASIGA). The 3D-printed resins were...

The effect of printing parameters on the surface characteristics of three-dimensional (3D)-printed denture base resins (DBRs) is neglected. Therefore, this study investigated the effect of printing orientation and post-curing time on the surface roughness and hardness. One conventional heat-polymerized (HP) resin and two 3D-printing resins (NextDen...

Background Dentures with antimicrobial properties are desirable for preventing Candida albicans adhesion. This study was to assess the effectiveness of bioactive glass (BAG) on C. albicans adhesion, surface roughness, and hardness of denture base materials. Methods Heat-polymerized (HP) and autopolymerized (AP) acrylic resins were used to fabricat...

Due to the low mechanical performances of 3D-printed denture base resins, ZrO2 nanoparticles (ZrO2NPs) were incorporated into different 3D-printed resins and their effects on the flexure strength, elastic modulus, impact strength, hardness, and surface roughness were evaluated. A total of 286 specimens were fabricated in dimensions per respective t...

Purpose: Investigate the effect of low nanodiamond (ND) addition and autoclave polymerization on the flexural strength, impact strength, and hardness of polymethylmethacrylate (PMMA) denture base. Methods: A total of 240 heat polymerized PMMA were fabricated with low ND concentrations of 0.1%, 0.25%, and 0.5%, and unmodified as control. The spec...

Purpose: To introduce a new technique, denture base layering, for the addition of titanium dioxide nanoparticles (TiO2 NPs) to polymethylmethacrylate (PMMA) and to investigate the effects of the layering technique on Candida albicans (C. albicans) adhesion and on surface roughness, hardness, translucency, and flexural strength. Materials & method...

Purpose: To evaluate the effect of printing orientation combined with different post-curing times on the flexural strength of 3D-printed resins. Materials and methods: A total of 480 rectangular specimens with the dimensions of 64×10×3.3 mm were designed and fabricated from two 3D printed acrylic resins and one heat-polymerized resin (HP). 3D-pr...

Purpose: To compare flexural strength, elastic modulus, and surface hardness of CAD-CAM milled, 3D-printed, and heat-polymerized denture base resins. Materials and methods: A total of 120 specimens were fabricated from heat-polymerized acrylic resin (HP), milled resin (Avadent and IvoCad), and 3D-printed resin (ASIGA, FormLabs, and NextDent). Th...

Objective: This study aimed to evaluate the effect of nanodiamond (ND) addition to repair resin with repair gap modifications on the flexural and impact strength of repaired polymethylmethacrylate denture base. Materials and Methods: Heat-polymerized acrylic resin specimens (N¼100/test) were prepared and sectioned to half creating two repair gaps:...

Purpose: The longevity of removable prostheses is mostly influenced by the properties of the used materials. The ability of the material to withstand high occlusal loads without deformation can enhance patient satisfaction and quality of life. This in vitro study aimed to investigate the wear and fracture resistance of three dimensional (3D)-print...

This study aimed to evaluate the water sorption, solubility, and translucency of 3D-printed denture base resins (NextDent, FormLabs, and Asiga), compare them to heat-polymerized acrylic denture base resins, and assess their performance under the effects of thermal cycling. A total of 80 acrylic disc specimens were used in the current study, categor...

Purpose: To investigate the influence of reducing material thickness on flexural properties of CAD-CAM denture base resins. Materials and methods: Four computer-aided design and computer-aided manufacturing (CAD-CAM) denture base acrylic resin materials were selected; two made via the subtractive method (AvaDent and IvoCad) and two with the addi...

Background: Denture base resin has some drawbacks. This study investigated the impact of nanodiamonds (ND) and autoclave polymerization on the surface characteristics, translucency, and Candida albicans adherence in polymethyl methacrylate (PMMA) denture base resin after thermocycling. Methods: Heat-polymerized PMMA discs (15 × 2 mm) with a tota...

Purpose: This study aimed to evaluate the effect of incorporating zirconium oxide nanoparticles (nano-ZrO2) in polymethylmethacrylate (PMMA) denture base resin on flexural properties at different material thicknesses. Materials and methods: Heat polymerized acrylic resin specimens (N = 120) were fabricated and divided into 4 groups according to...

Objective The aim of this study was to evaluate the effects of the addition of low-silicon dioxide nanoparticles (nano-SiO2) on the flexural strength and elastic modulus of polymethyl methacrylate (PMMA) denture base material. Materials and Methods A total of 50 rectangular acrylic specimens (65 × 10 × 2.5 mm3) were fabricated from heat-polymerized...

Aim: The present study assessed the influence of Azadirachta indica (AI) powder on the mechanical, surface, and optical properties of heat-polymerized polymethylmethacrylate (PMMA) denture base material. Materials and methods: A total of 300 heat-polymerized PMMA acrylic resin specimens were fabricated with dimensions of 65 × 10 × 3.3 ± 0.01 mm for...

Objective: To evaluate the antimicrobial effects of different concentrations of zirconium dioxide nanoparticles (nano-ZrO2) reinforcement of poly(methyl) methacrylate (PMMA) on surface roughness and C. albicans biofilm. Methods: 20 heat-polymerized acrylic resin discs were conventionally made and divided into 4 groups (n = 5) according to nano-Z...

Purpose : This in vitro study evaluated the flexural strength, impact strength, hardness, and surface roughness of 3D-printed denture base resin subjected to thermal cycling treatment. Methods : According to ISO 20795-1:2013 standards, 120 acrylic resin specimens (40/flexural strength test, 40/impact strength, and 40/surface roughness and hardness...

The antifungal effect of zirconium dioxide nanoparticles (ZrO2NPs) incorporated into denture base material has been inadequately investigated; additionally, to the authors’ knowledge, no studies have assessed the influence of artificial aging on the antifungal activity of these particles. Methodology. Heat-polymerized acrylic resin disks were fabri...

The aim of this study was to assess the translucency of denture base acrylic resin reinforced with zirconium dioxide (ZrO2NPs), silicon dioxide (SiO2NPs), and diamond (DNPs) nanoparticles. A total of 130 heat-polymerized acrylic discs (15×2.5 mm) were fabricated conventionally and divided into control and experimental groups according to nanopartic...

Background: The impaction of third molar can compromise adjacent teeth by increasing the risk of developing dentoalveolar lesions. Aims: The aim of this study was to evaluate the prevalence of impacted third molar in association to patients’ demographics and its angulation among patients who visited dental clinics at the College of Dentistry, Imam...

Objectives: This study aimed to evaluate denture cleanser effects on color stability, surface roughness, and hardness of PMMA denture base resin reinforced with nano-ZrO2. Materials and methods: A total of 420 specimens were fabricated of unreinforced and nano-ZrO2 reinforced acrylic resin at 2.5% and 5%, resulting in 3 main groups. These groups...

Background: The purpose of the study was to compare trends in the progression of COVID-19 among South Asian countries with more developed Western countries. Methods: COVID-19 data from South Asian countries were used for this observational study. Data were taken up to April 21, 2020 from the outbreak of the COVID-19. Four of the seven countries met...

Background: Online learning or E-learning are approaches to broadcasting teaching by the means of internet technology and software applications. Kingdom of Saudi Arabia is likewise embarking on the rapid growth in online education. The purpose of this study is to investigate the student’s perceptions regarding online teaching and learning during CO...

Purpose: This in-vitro study evaluated and compared the effect of white henna (WH) and natural henna (NH) addition on Candida albicans adhesion and physical properties of the denture base material. Materials and methods: A total of 243 acrylic resin specimens (9 per group) were divided as follows: 81 for flexural strength, 81 for Candida albican...

Background: The purpose of the study was to compare trends in the progression of COVID-19 among South Asian countries with more developed Western countries. Methods: COVID-19 data from South Asian countries were used for this observational study. Data were taken up to April 21, 2020 from the outbreak of the COVID-19. Four of the seven countries met...

Purpose: To evaluate the effect of the addition of low concentration of silicon-dioxide nanoparticles (nano-SiO2 ) to poly(methylmethacrylate) (PMMA) denture base material on Candida albicans adhesion, surface roughness, contact angle, hardness, and translucency. Materials and methods: A total of 150 acrylic disks were fabricated from heat-polym...

Purpose The additions of zirconium oxide nanoparticles (nano‐ZrO2) to denture base materials have produced nanocomposites with satisfactory properties, although there is a lack of research investigating the effects of denture cleansers on these materials. This study aimed to evaluate the effect of denture cleansers on the flexural strength of dentu...

OBJECTIVE: The purpose of this systematic review was to study the literature evaluating the educational environment by using DREEM tool and compute overall mean DREEM score by using Meta-analysis. Further, variation in DREEM score was also studied by distributing studies into different time periods. MATERIALS AND METHODS: A systematic literature s...

Objective Purpose of the current study was to find the trend in progression of COVID-19 among South Asian countries as compared to more developed western countries. Method COVID-19 data of South Asian countries was taken for this observational study. Data was taken up to 21 st April since the outbreak of the virus. There were 4 out of 7 countries w...

Objective Purpose of the current study was to find the trend in progression of COVID-19 among South Asian countries as compared to more developed western countries. Method COVID-19 data of South Asian countries was taken for this observational study. Data was taken up to 21 st April since the outbreak of the virus. There were 4 out of 7 countries w...

Objectives: Aim of the present study was to analyze the (1) partial vs complete lock down effects over the spread of COVID-19, (2) time taken for complete lock down decision in relation with the spread of disease. Method: COVID-19 data for the current observational study was taken up to 14th April since the outbreak of the virus. There were 28 cou...

Objective To compare effectiveness of ethylenediaminetetraacetic acid (EDTA) and citric acid in removing collagen fiber network covering dentinal tubules of human teeth. Materials and Methods Eighteen dentin discs were divided in three groups; Gp 1: discs received no treatment (control), Gp 2: discs etched with 17% EDTA (pH = 7.1), and Gp 3: discs...

Aim This study aimed to evaluate the prevalence of carious, restored, and missing teeth among diabetic and non-diabetic patients who visited dental clinics in Dammam, Saudi Arabia. Method This retrospective study was conducted between April and November 2018. The data collection procedure was conducted in two steps: (1) review of patient records f...

Introduction: EDTA (ethylenediaminetetraacetic acid) and citric acid are two commonly used chelating agents for the removal of collagen fibers. EDTA exerts its chelation effect by demineralizing divalent cations, 1 whereas citric acid is a decalcifying and cleansing agent. 2 During in-vitro experiments, researchers commonly test tubule occlusion pe...

Purpose: To evaluate the effect of protective coatings on the surface roughness, contact angle, and Candida albicans (C. albicans) adhesion to polymethyl methacrylate (PMMA) denture base materials. Material and methods: A total of 560 rectangular heat- and autopolymerized acrylic resin specimens were fabricated and divided into 5 groups (n = 14/...

This study aimed to investigate the prevalence of partial edentulism, RPD type, design, and components and their frequency of use by patients at the prosthodontic clinics of the College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia. The prepared surveys, laboratory authorization forms, and images of the RPD metal framew...

Background Denture with antimicrobial activities is desirable to prevent Candida albican adhesion subsequently decreasing the susceptibility of denture stomatitis incidence. Azadirachta Indica, commonly known as Neem powder has antimicrobial effect but the effect of its addition to acrylic denture base on C. albicans adhesion has not been investiga...

OBJECTIVE: The purpose of this study was to investigate students' perception of the educational climate in a medical school in Dammam, Kingdom of Saudi Arabia (KSA). The difference in the perception of preclinical year students and clinical year students was also evaluated. MATERIALS AND METHODS: This cross-sectional study was conducted among 2 nd...

Explanation In physics, we have different units for measuring various variables. There are different units to measure a same variable but selection of a unit to measure length or size depends on what we want to measure. Distance, between cities or even between different areas within a city, usually writes in Miles (mi) or Kilometers (km) because if...

The percentage of completely and partially edentulous patients and their prosthetic treatment at the Department of Substitutive Dental Sciences (SDS), College of Dentistry, University of Dammam, were investigated. Panoramic radiographs and medical records of adult patients ( n=479 , mean age 45.9 years, and range 25–96 years) treated in 2011–2014 w...

Objective The purpose of the study was to evaluate the frequency and status of root canal-treated teeth in patients treated at the College of Dentistry, University of Dammam in the Eastern Province of Saudi Arabia. Materials and Methods A total of 3701 patients visited the clinics during the study period. Through the use of radiographs, 161 patien...

Objectives: To evaluate differences in students' performance in a dental morphology course after the introduction of a 3D software-teaching program. Methods: This retrospective study took place at the College of Dentistry, University of Dammam, Dammam, Kingdom of Saudi Arabia, from Augst 2013 to January 2016. The study included 3 groups of student...

Objective: The aim of the study was to determine the prevalence of caries in first permanent molars (FPM) among children aged from 8 to 12 years. Methodology: This cross-sectional study was performed from May to November 2014 on school-going children living in Dammam, Saudi Arabia. A total of 540 children aged between 8 and 12 years were randomly s...

Objective This study was designed to evaluate the perception of students and interns toward research. Materials and Methods The study was conducted in January 2014. Participants of the study were fourth, fifth, and 6th year students and interns. A questionnaire comprised thirteen questions was distributed to evaluate students’ and interns’ percept...

Poster

Objective: Purpose of the study was to determine the prevalence of dental fluorosis and its pattern in primary and permanent teeth among 6-12-year-old Pakistani school going children living in Dammam, Saudi Arabia. Materials and Methods: This cross-sectional study was performed between June and September 2014. A total number of screened children we...

Objectives: The study aimed to identify the dental procedures that elicit the highest level of anxiety by various dental procedures and to determine the correlation of anxiety with students’ gender and varying perceptions of anxiety across years of dental education. Methods: This cross-sectional study was conducted at Sardar Begum Dental College, P...

Objective: To estimate the difference between students' expected and actual perceptions about their educational environment. Method: A prospective study was conducted in the College of Dentistry, University of Dammam, Saudi Arabia involving first year dental students of the academic year 2013-14. The students were asked to fill out two versions of...

Abstract Objectives This cross-sectional study sought to obtain the perceptions of third year students of the University of Dammam faculty of dentistry about the usefulness of Internet-based educational videos in assisting oral biology lectures. Methods The study was conducted at the College of Dentistry, University of Dammam during March 2014. A v...

To determine the prevalence of dental caries in the primary and permanent teeth, and evaluate the brushing habits of school children in Dammam, Kingdom of Saudi Arabia (KSA). Methods. This study was conducted at Dammam, KSA. Oral examination of the participants was conducted from February to May 2014. The total sample size for this cross-sectional...

Objectives: Purpose of the study was to evaluate the awareness and interest of medical students towards research projects in their education and to check the difference of approach among male and female students. Methods: This cross sectional study was conducted at College of Medicine, University of Dammam. Male and female students from second to s...

Knowledge of Medical and Dental Practitioners towards dental management of patients on anticoagulant and/or anti-platelet therapyAbstract:Objective The purpose of this study was to evaluate the knowledge of medical and dental practitioners towards the dental management of patients who are on anti-coagulant and/or anti platelet agents. Methods This...

Objectives: To evaluate patients' perception regarding treatment and environment in the interns' clinic at a university dentistry clinic. Methods: This cross-sectional study was conducted between July 2012 to May 2013 at the College of Dentistry, University of Dammam, Dammam, Kingdom of Saudi Arabia. A self-directed questionnaire was distributed...

Objective: To determine the caries burden in the primary and permanent teeth in Saudi Arabian children, adolescents and young adults between the ages of two and twenty from 1999 to 2008. Methods: PubMed database was used to search all the publications on caries prevalence by the key words of Dental caries', dmft' and DMFT'. Inclusion criter...

The aim of this review was to determine prevalence of dental caries in primary and permanent teeth in the 2-20-year-old population of the Arab league. A literature search was performed on Pubmed, Summon and Google Scholar using the key words 'Dental caries', 'dmft' and 'DMFT'. A total of 293 articles were found, of which 35 passed our inclusion cri...

Aim: The purpose of this study is to evaluate patients’ attitude towards dental clinics. Method: A survey was conducted with 242 participants who were randomly selected from different public places. The study was conducted over February and March 2013. The data were anonymous and did not contain any identifiable information about the respondents. F...

To determine the prevalence of caries in the primary and permanent teeth in a Saudi population. This study was conducted at the College of Dentistry, University of Dammam, Dammam, Kingdom of Saudi Arabia. In June 2010, a literature search was started and found all studies conducted in Saudi Arabia on dental caries from 1999 to 2008. Sixty articles...