FIRAS ABDULAMEER FARHAN

@uobaghdad.edu.iq

Assistant Professor, DEPARTMENT OF PROSTHODONTIC, COLLEGE OF DENTISTRY
UNIVERSITY OF BAGHDAD

FIRAS ABDULAMEER FARHAN


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https://researchid.co/dr.firas-alhilfi

EDUCATION

BDS (University of Baghdad ), MSc (University of Baghdad ), PhD (University of Malaya)

RESEARCH INTERESTS

Surface Coating, Zirconia based restoration, Ceramic Materials, Finite Element Analysis, Surface and Mechanical Properties.
12

Scopus Publications

106

Scholar Citations

6

Scholar h-index

3

Scholar i10-index

Scopus Publications

  • Analysis of radio-opacity, surface roughness, and wettability of calcium carbonate nanoparticle-reinforced three-dimensional printed acrylic resin
    Riyam Imad Taha, Firas Abdulameer Farhan
    Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications, 2026
    Background Additive manufacturing (3D-printed) technology is a major advancement in prosthodontics, offering efficiency, cost-effectiveness, and the production of high-quality prostheses. Nanoparticles have been included in three-dimensional (3D) printed denture bases to enhance their physico-mechanical and biological characteristics. This work aims to examine the influences of adding calcium carbonate nanoparticles to 3D-printed denture base resins on their radio-opacity, wettability, and surface roughness. Material and method Ninety specimens were split into three groups: two modified groups (1.5 and 2 weight percent CaCO 3 NPs) and one control group (unmodified group). Three identical subgroups for the radiopacity test, surface roughness, and wettability test were formed from each concentration (n = 10). Additionally, the chemical composition of the 3D resin was also investigated using Fourier transform infrared spectroscopy (FTIR) to see if the addition of calcium carbonate nanoparticles changed it, and the surface topography of 3D-printed acrylic specimens was compared using atomic force microscopy (AFM). Result Results revealed a significant improvement in the radio-opacity, wettability, and surface roughness (p < 0.05) after adding calcium carbonate nanoparticles to the 3D-printed denture base resin. Conclusion The specimens with 2% wt. of CaCO 3 NPs showed the greatest increase in radio-opacity. While specimens containing 1.5% wt. CaCO 3 NPs showed lower surface roughness and higher wettability.
  • Effect of incorporating calcium carbonate nanoparticles on the mechanical properties of 3D-printed acrylic resin
    Riyam Imad Taha, Firas Abdulameer Farhan
    Science Progress, 2026
    Denture base materials made using three-dimensional printing (3D printing) have expanded in availability, contributing to the meteoric rise of this innovative dental technique. Despite 3D-printed denture resins having good biocompatibility and esthetics, achieving superior mechanics in these materials is still difficult. This study aimed to find out how adding calcium carbonate (CaCO 3 ) nanoparticles to 3D-printed denture base resin affected its surface hardness, impact strength, and flexural strength. The ninety 3D printed samples were allocated into three groups following the amount of CaCO 3 NPs added to the resin: one control group had no CaCO 3 , and two modified groups—one had 1.5 wt.%, and the other group had 2 wt.%. Surface hardness, impact, and flexural strength were the three test specifications used to further divide each group into three subgroups. Analysis was also conducted utilizing energy dispersive X-ray spectroscopy (EDX) and field emission scanning electron microscopy (FESEM). All data were statistically analyzed. The results verified that adding CaCO 3 NPs to the 3D-printed denture resin significantly boosted its impact strength, flexural, and surface hardness ( P value < 0.05). These findings indicate potential for developing a novel denture base constructed from 3D-printed nanocomposites with enhanced material properties.
  • INFLUENCE OF THE ADDITION OF NANO CERIUM OXIDE/CHITOSAN COMPOSITE ON THE MECHANICAL CHARACTERISTICS OF POLYMETHYLMETHACRYLATE RESIN
    Bulletin of Stomatology and Maxillofacial Surgery, 2025
  • Influence of Zirconia and Polymerized Microfiller on Some Properties of Polymethyl Methacrylate Denture Base
    Duaa Subhi Rasan, Firas Abdulameer Farhan
    Al Khwarizmi Engineering Journal, 2024
    يأتي الاستخدام العالمي لبولي ميثيل ميثاكريلات (PMMA) كمادة أساسية لأطقم الأسنان من سهولة المعالجة والإصلاح والتوافق الحيوي والمظهر الجمالي الممتاز. ومع ذلك ، فإن أوجه القصور في مواد البوليمر ، مثل الخواص الميكانيكية والفيزيائية غير كافية. كان الغرض من هذه الدراسة هو تقييم القوة المستعرضة وقابلية البلل PMMA بعد الاختلاط مع جزيئات الزركونيا و PMMA المبلمرة [ZP] كمواد مالئة بنسبة مختلفة. المواد والأساليب: تم اقتراح مجموعتين وفقا لإضافة ZP بنسب مئوية مختلفة إلى ؛ المجموعة A مع 2 ٪ من ZP والمجموعة B مع 4 ٪ من ZP. كانت المجموعة الضابطة بدون إضافة ZP. تم تحضير مسحوق ZP وخلطه مع مسحوق PMMA بالوزن بنسبتين مختلفتين 2٪ و 4٪ [1.2 ميكرومتر و 30٪ ZrO و 0.69 ميكرومتر و 70٪ p-PMMA]. لبلمرة العينات ، تم استخدام إجراء المعالجة الحرارية المعتاد باستخدام حمام مائي ، لكل من اختبارات قوة المرونة وقابلية البلل. تم تحليل البيانات من الدراسة باستخدام تحليل التباين أحادي الاتجاه (ANOVA مع اختبارات Tukey's HSD و Dunnett's T3 اللاحقة) مع قيمة P معنوية تبلغ (p <0.05) .. وكانت النتائج زيادة معنوية في قوة المرونة المستعرضة لوحظت مع إضافة مسحوق ZP إلى PMMA بنسبة 2٪. بينما حدث انخفاض كبير بنسبة 4٪. لوحظت زيادة كبيرة في قابلية البلل بنسبة 2٪ و 4٪. مزيج من زركونيا وجزيئات PMMA المبلمرة المستخدمة كحشو الأسنان في 2 ٪ و 4 ٪ بالوزن. تعزيز وتقليل القوة المستعرضة على التوالي ، في حين عززت قابلية البلل مع زيادة التركيز.الكلمات المفتاحية: بولي ميثيل ميثاكريلات (PMMA) ، زركونيا ، PMMA مبلمر ، قوة المرونة وقابلية للبلل.
  • Effect of addition of polymerized polymethyl methacrylate (PMMA) and zirconia particles on impact strength, surface hardness, and roughness of heat cure PMMA: An in vitro study
    DuaaSubhi Rasan, FirasAbdulameer Farhan
    Dental Hypotheses, 2023
    Introduction: This study was designed to examine the effects of addition of the combination of polymerized polymethyl methacrylate (PMMA) and zirconia (ZrO2) particles to heat cure PMMA resin on impact strength, surface hardness, and roughness. Methods: The 70% (w/w) of polymerized PMMA powder (particle size: 0.70 µm) was mixed with 30% (w/w) of zirconia powder (ZrO2) (1 µm) to produce PMMA-ZrO2 filler. Ninety acrylic specimens created were divided into three groups containing 0% wt (Control group), 2% wt, and 4% wt, PMMA-ZrO2 filler. Ten specimens were used for impact strength, surface hardness and roughness test, blindly. Data were analyzed via one-way ANOVA and the Tukey post hoc test using R 3.6.3. Results: There was statistically significant difference among study groups regarding surface hardness and roughness (p < 0.001). Yet, nonsignificant difference was found on the subject of impact strength (p = 0.33). Post hoc test showed statistically significant difference for all pairwise comparisons as regards surface hardness and roughness (p < 0.05). Conclusion: The incorporation of PMMA-ZrO2 filler did not improve impact strength (resistance during an unexpected blows or dropping). Yet, increased surface roughness and hardness, concentration-dependently.
  • Visibility of mandibular canal on CBCT cross-sectional images in comparison with panoramic radiograph: Retrospective study
    International Medical Journal, 2021
  • Comparison of the accuracy of intraoral digital impression system and conventional impression techniques for multiple implants in the full-arch edentulous mandible
    F. Farhan, A. Sahib, A. Fatalla
    Journal of Clinical and Experimental Dentistry, 2021
    Background Several impression techniques, especially in combination with computer-aided design and computer-aided manufacturing (CAD/CAM), are used in increasing the accuracy of dental implantology and decreasing patient discomfort. The study was designed to examine the accuracy of the digital impression (DI) of multiple implants with an intraoral scanner (IOS) and compared with that of a conventional impression (CI). Material and Methods Four dental implants were placed in teeth area #33, #36, #43 and 46# of the mandibular full-arch model. The implanted model was replicated by IOS and CI after fitting of scannable abutments over the implant screws. Then, a small hole was made on the scan region (as a reference point). Two types of CI techniques were used; dual-phase (DP) and monophase (MP). Stone casts were produced through a conventional close tray impression technique using die stone. The casts were scanned with a laboratory scanner. DI was attained by scanning the implanted model with the IOS. The control sample was accomplished by scanning the implanted model directly with a laboratory scanner. Dimensional accuracy was calculated by measuring the distances between the reference points of four measuring parameters as follows; A-B, B-C, C-D, and A-D using CAD software. Results The mean values and standard deviation between the four parameters of different impression techniques (CI and DI) and the control group showed convergent value. One-way ANOVA test showed all CI techniques, except IOS, showed a significant differences from the control group. Conclusions Compared with CI, the IOS was more accurate because no differences were observed between its measurements and those of the control model. CI is simple and reduces patient discomfort when used in fabricating multiple implants and allowing communication with dental technicians. Key words:Dimension accuracy, conventional impressions, digital impressions, multiple implants.
  • ASSOCIATION OF SELF-REPORTED SYMPTOMS OF XEROSTOMIA WITH VAPING AND CIGARETTE SMOKING: A CROSS-SECTIONAL STUDY
    Ali M. Hasan, Rasha Salah, Firas A. Farhan, Ali A. Abdulkareem
    Journal of Stomatology, 2021
  • Prevalence of Developmental Dental Anomalies and Defects: A Clinical Survey
    Journal of International Dental and Medical Research, 2021
  • Physico-mechanical behavior of room temperature vulcanized maxillofacial silicon after addition of glass flakes
    Indian Journal of Forensic Medicine and Toxicology, 2020
  • Application of zirconia surface coating to improve fracture resistance and stress distribution of zirconia ceramic restorations
    Firas Abdulameer Farhan, Eshamsul Sulaiman, Muralithran G. Kutty
    Ceramics International, 2018
  • Effect of new zirconia surface coatings on the surface properties and bonding strength of veneering zirconia substrate
    Firas Abdulameer Farhan, Eshamsul Sulaiman, Muralithran G. Kutty
    Surface and Coatings Technology, 2018

RECENT SCHOLAR PUBLICATIONS

  • Analysis of radio-opacity, surface roughness, and wettability of calcium carbonate nanoparticle-reinforced three-dimensional printed acrylic resin
    RI Taha, FA Farhan
    Proceedings of the Institution of Mechanical Engineers, Part L: Journal of … , 2026
    2026
  • Effect of incorporating calcium carbonate nanoparticles on the mechanical properties of 3D-printed acrylic resin
    RI Taha, FA Farhan
    Science Progress 109 (1), 00368504261428915 , 2026
    2026
  • Influence of the Addition of Nano Cerium Oxide/Chitosan Composite on the physical Characteristics of Polymethylmethacrylate Resin
    AH Jaber, FA Farhan
    (Humanities, social and applied sciences) Misan Journal of Academic Studies … , 2025
    2025
  • The Desirable Impression Material and Technique Used For partial Dentures among Prosthodontist: Impression Material Technique and partial Dentures among Prosthodontist
    HK Hameed, FA Farhan
    Journal of Medical and Oral Biosciences (JMOB) 2 (1), 32-47 , 2025
    2025
  • Effect of Immersion Time of a Hydrogen Peroxide and Vinegar Mixture Solution on the roughness of Heat-cured and CAD/CAM Polymethyl Methacrylate Resin
    AI Shanef, FA Farhan
    (Humanities, social and applied sciences) Misan Journal of Academic Studies … , 2024
    2024
  • Effect of Addition Zirconia/Chitosan Filler on Mechanical Properties of Heat Cure Polymethyl Methacrylate Resin
    SL Mohammed, FA Farhan
    (Humanities, social and applied sciences) Misan Journal of Academic Studies … , 2024
    2024
    Citations: 2
  • Influence of zirconia and polymerized microfiller on some properties of polymethyl methacrylate denture base
    DS Rasan, FA Farhan
    Al-Khwarizmi Engineering Journal 20 (1), 42-50 , 2024
    2024
    Citations: 2
  • Effect of addition of polymerized polymethyl methacrylate (PMMA) and zirconia particles on impact strength, surface hardness, and roughness of heat cure PMMA: An in vitro study
    DS Rasan, Farhan, Firas Abdulameer
    Dental Hypotheses 14 (1), 36-8 , 2023
    2023
    Citations: 8
  • Visibility of Mandibular Canal on CBCT Cross-Sectional Images in Comparison with Panoramic Radiograph: Retrospective Study
    Resha Jameel Abdulsaheb, Areej Ahmed Najm, Firas Abdulameer Farhan
    International Medical Journal 28 (1), 65-68 , 2021
    2021
    Citations: 6
  • Comparison of the accuracy of intraoral digital impression system and conventional impression techniques for multiple implants in the full-arch edentulous mandible
    Firas Abdulameer Farhan, Ali Jameel Abdul Sahib, Abdalbseet Ahmad Fatalla
    Journal of Clinical and Experimental Dentistry 13 (5), e487-492 , 2021
    2021
    Citations: 22
  • Visibility of mandibular canal on CBCT cross-sectional images in comparison with panoramic radiograph (retrospective study)
    R Jameel, AA Najm, FA Farhan
    J Res Med Dent Sci 9, 290-4 , 2021
    2021
    Citations: 5
  • ASSOCIATION OF SELF-REPORTED SYMPTOMS OF XEROSTOMIA WITH VAPING AND CIGARETTE SMOKING: A CROSS-SECTIONAL STUDY
    Ali, Rasha, Firas, Ali
    Journal of Stomatology 74 (3), 188-194 , 2021
    2021
    Citations: 6
  • Prevalence of Developmental Dental Anomalies and Defects: A Clinical Survey
    MA Kashmoola, NS Mustafa, SM Noor, R Rozaimee, FA Farhan
    Journal of International Dental and Medical Research 14 (1), 265-272 , 2021
    2021
    Citations: 12
  • Physico-Mechanical Behavior of Room Temperature Vulcanized Maxillofacial Silicon after Addition of Glass Flakes
    Ghassan Abdul-Hamid Naji, Mohammed Moudhaffer Ali, Firas Abdulameer Farhan
    Indian Journal of Forensic Medicine & Toxicology 14 (1), 1304-1310 , 2020
    2020
    Citations: 5
  • Application of zirconia surface coating to improve fracture resistance and stress distribution of zirconia ceramic restorations
    FA Farhan, E Sulaiman, MG Kutty
    Ceramics International 44 (17), 21633-21640 , 2018
    2018
    Citations: 4
  • Effect of new zirconia surface coatings on the surface properties and bonding strength of veneering zirconia substrate
    FA Farhan, E Sulaiman, MG Kutty
    Surface and coatings technology 333, 247-258 , 2018
    2018
    Citations: 20
  • Effect of Surface Treatment of Zirconia-Ceramic Dental Restorations
    FA Farhan
    PQDT-Global , 2018
    2018
  • Effect of surface treatment of zirconia-ceramic dental restorations/Firas Abdulameer Farhan
    F Firas Abdulameer
    2018
  • Effect of post-pressing times on adaptation of maxillary heat cured acrylic denture base at posterior palatal seal area
    FA Farhan
    Journal of Baghdad College of Dentistry 325 (2204), 1-4 , 2013
    2013
    Citations: 3
  • Evaluation of transverse and tensile bond strength of repaired nylon denture base material by heat, cold and visible light cure acrylic resin
    FA Farhan, GA Abood, AA Mohamad
    Journal of baghdad college of dentistry 25 (special issue 1), 1-5 , 2013
    2013
    Citations: 5

MOST CITED SCHOLAR PUBLICATIONS

  • Comparison of the accuracy of intraoral digital impression system and conventional impression techniques for multiple implants in the full-arch edentulous mandible
    Firas Abdulameer Farhan, Ali Jameel Abdul Sahib, Abdalbseet Ahmad Fatalla
    Journal of Clinical and Experimental Dentistry 13 (5), e487-492 , 2021
    2021
    Citations: 22
  • Effect of new zirconia surface coatings on the surface properties and bonding strength of veneering zirconia substrate
    FA Farhan, E Sulaiman, MG Kutty
    Surface and coatings technology 333, 247-258 , 2018
    2018
    Citations: 20
  • Prevalence of Developmental Dental Anomalies and Defects: A Clinical Survey
    MA Kashmoola, NS Mustafa, SM Noor, R Rozaimee, FA Farhan
    Journal of International Dental and Medical Research 14 (1), 265-272 , 2021
    2021
    Citations: 12
  • Effect of addition of polymerized polymethyl methacrylate (PMMA) and zirconia particles on impact strength, surface hardness, and roughness of heat cure PMMA: An in vitro study
    DS Rasan, Farhan, Firas Abdulameer
    Dental Hypotheses 14 (1), 36-8 , 2023
    2023
    Citations: 8
  • Visibility of Mandibular Canal on CBCT Cross-Sectional Images in Comparison with Panoramic Radiograph: Retrospective Study
    Resha Jameel Abdulsaheb, Areej Ahmed Najm, Firas Abdulameer Farhan
    International Medical Journal 28 (1), 65-68 , 2021
    2021
    Citations: 6
  • ASSOCIATION OF SELF-REPORTED SYMPTOMS OF XEROSTOMIA WITH VAPING AND CIGARETTE SMOKING: A CROSS-SECTIONAL STUDY
    Ali, Rasha, Firas, Ali
    Journal of Stomatology 74 (3), 188-194 , 2021
    2021
    Citations: 6
  • Effect of different metal surface treatments on microleakage of two types of the acrylic resin: heat cure and light cure at Co/Cr interface
    FA Farhan
    A master thesis, Department of Prosthetic Dentistry, College of Dentistry … , 2009
    2009
    Citations: 6
  • Visibility of mandibular canal on CBCT cross-sectional images in comparison with panoramic radiograph (retrospective study)
    R Jameel, AA Najm, FA Farhan
    J Res Med Dent Sci 9, 290-4 , 2021
    2021
    Citations: 5
  • Physico-Mechanical Behavior of Room Temperature Vulcanized Maxillofacial Silicon after Addition of Glass Flakes
    Ghassan Abdul-Hamid Naji, Mohammed Moudhaffer Ali, Firas Abdulameer Farhan
    Indian Journal of Forensic Medicine & Toxicology 14 (1), 1304-1310 , 2020
    2020
    Citations: 5
  • Evaluation of transverse and tensile bond strength of repaired nylon denture base material by heat, cold and visible light cure acrylic resin
    FA Farhan, GA Abood, AA Mohamad
    Journal of baghdad college of dentistry 25 (special issue 1), 1-5 , 2013
    2013
    Citations: 5
  • Application of zirconia surface coating to improve fracture resistance and stress distribution of zirconia ceramic restorations
    FA Farhan, E Sulaiman, MG Kutty
    Ceramics International 44 (17), 21633-21640 , 2018
    2018
    Citations: 4
  • Effect of post-pressing times on adaptation of maxillary heat cured acrylic denture base at posterior palatal seal area
    FA Farhan
    Journal of Baghdad College of Dentistry 325 (2204), 1-4 , 2013
    2013
    Citations: 3
  • Effect of Addition Zirconia/Chitosan Filler on Mechanical Properties of Heat Cure Polymethyl Methacrylate Resin
    SL Mohammed, FA Farhan
    (Humanities, social and applied sciences) Misan Journal of Academic Studies … , 2024
    2024
    Citations: 2
  • Influence of zirconia and polymerized microfiller on some properties of polymethyl methacrylate denture base
    DS Rasan, FA Farhan
    Al-Khwarizmi Engineering Journal 20 (1), 42-50 , 2024
    2024
    Citations: 2
  • Analysis of radio-opacity, surface roughness, and wettability of calcium carbonate nanoparticle-reinforced three-dimensional printed acrylic resin
    RI Taha, FA Farhan
    Proceedings of the Institution of Mechanical Engineers, Part L: Journal of … , 2026
    2026
  • Effect of incorporating calcium carbonate nanoparticles on the mechanical properties of 3D-printed acrylic resin
    RI Taha, FA Farhan
    Science Progress 109 (1), 00368504261428915 , 2026
    2026
  • Influence of the Addition of Nano Cerium Oxide/Chitosan Composite on the physical Characteristics of Polymethylmethacrylate Resin
    AH Jaber, FA Farhan
    (Humanities, social and applied sciences) Misan Journal of Academic Studies … , 2025
    2025
  • The Desirable Impression Material and Technique Used For partial Dentures among Prosthodontist: Impression Material Technique and partial Dentures among Prosthodontist
    HK Hameed, FA Farhan
    Journal of Medical and Oral Biosciences (JMOB) 2 (1), 32-47 , 2025
    2025
  • Effect of Immersion Time of a Hydrogen Peroxide and Vinegar Mixture Solution on the roughness of Heat-cured and CAD/CAM Polymethyl Methacrylate Resin
    AI Shanef, FA Farhan
    (Humanities, social and applied sciences) Misan Journal of Academic Studies … , 2024
    2024
  • Effect of Surface Treatment of Zirconia-Ceramic Dental Restorations
    FA Farhan
    PQDT-Global , 2018
    2018