Hany Mohamed Aly Ahmed

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Verified

Hany verified their affiliation via an institutional email.

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• BDS - HDD (Endo) - MFDS (RCPS) (Glasgow) - MDTFEd RCS (Edin) - PhD - FDS RCS (England) - FICD - FPFA - FADI
• Associate Professor at University of Malaya

The complexity of endo-perio lesions reflects the relevance of a close developmental relationship between the pulp and periodontal tissues. A review of the literature was undertaken to discuss the complex and dynamic nature of normal anatomical and pathological pulp and periodontal intercommunication pathways. This interrelationship was then correl...

Knowledge of root and root canal morphology is a prerequisite for effective non-surgical and surgical endodontic treatments. The external and internal morphological features of roots are variable and complex, and several classifications have been proposed to define the various types of canal configurations that occur commonly. More recently, improv...

Thorough knowledge of the anatomical complexities of the root canal system has a direct impact on the effectiveness of canal preparation and filling, and is an essential prerequisite for successful root canal treatment. A wide range of complex variations in root canal anatomy exists, including root canal configuration type, developmental anomalies...

Understanding the normal anatomical features as well as the more unusual developmental anomalies of teeth, roots and root canals is essential for successful root canal treatment. In addition to various types of root canal configuration and accessory canal morphology, a wide range of developmental tooth, root and canal anomalies exist, including C-s...

Objective: Consistent reporting of publications in a given topic is essential. This systematic review aimed to identify and evaluate the reporting items in previous publications related to root canal anatomy in major Endodontic journals. Methods: A systematic review was undertaken following the Preferred Reporting Items for Systematic Reviews and M...

Background: Mandibular first premolar teeth show a wide range of root and canal anatomical variations including accessory roots, deep root proximal grooves and multiple canals. This study aims to present micro-computed tomographic analysis and ex-vivo detection of six canals in a four-rooted mandibular first premolar tooth. Methods: An extracted fo...

This micro‐CT study evaluated the root canals of 135 mandibular incisors in a Malaysian subpopulation using Vertucci (1984) and Ahmed et al. (2017), whilst the accessory canals were classified using the Ahmed et al. (2018) system. The Fisher Exact test was used for analysis ( p = 0.05). Results showed that 53% of the teeth had Type I/ ¹ MI ¹ canals...

Objective: This study investigated the morphology of accessory canals in the mandibular first molar of a Malaysian subpopulation. Method: A total of 140 mandibular first molars were scanned using micro-computed tomography. The accessory canals for each of the mesial and distal roots were classified according to Ahmed et al. system based on location...

Objective: High-intensity focused ultrasound (HIFU) has demonstrated significant efficacy in eradicating bacteria from substrates emerging as a promising solution for root canal disinfection. This in-vitro study investigated the effects of HIFU on reducing intracanal bacteria and its impact on the chemical and mechanical properties of root dentine....

Understanding root canal morphology is essential for successful endodontic treatment. This study aimed to investigate morphological variations in root and canal systems of anterior and premolar teeth across different age groups and genders in a Saudi Arabian subpopulation using a novel classification system. A total of 3573 maxillary and mandibular...

Discipline-specific terminology is a central element of the vocabulary used by dentists and scientists in the context of their professional activities and plays a critical role in the understanding of dentistry. A number of controversial terms and non-standardized definitions exist in the field of endodontology. For example, in root and canal anato...

This study compared the chemical and physical properties of an experimental radiopaque white Portland cement (REPC) with reduced particle size to ProRoot white mineral trioxide aggregate (WMTA). The particle size distribution of experimental Portland cement (EPC) was examined. Nano-zirconium oxide (nano-ZrO) was then added to produce REPC. Chemical...

Objective Endodontic microbiota appears to undergo evolutionary changes during disease progression from inflammation to necrosis and post-treatment. The aim of this study was to compare microbiome composition and diversity in primary and post-treatment endodontic infections from a cohort of patients from the UAE. Design Intracanal samples were col...

Calcium hydroxide (CH) has been considered as a direct pulp capping materials (DPC) for the last decades despite having some limitations. Phosphorylate Pullulan (PPL) incorporated with CH (CHPPL) is a novel biomaterial that was introduced as a promising DPC material. Thus, the aim of the study was to evaluate the inflammatory response and mineraliz...

Introduction Root canal treatment procedures require a thorough understanding of root and canal anatomy. The purpose of this systematic review was to examine the morphological differences of teeth root and their canals assessed using cone-beam computed and micro-computed tomography in Saudi Arabian population. Methodology An electronic search was c...

This case report aims to present the detection, characterization, instrumentation, and filling of complex root canal configuration types in the mesio-buccal (MB) root of maxillary first molars. Three patients were referred for root canal treatment in first maxillary molars. Medical history, age, sex, and clinical findings were recorded. Intraoral p...

Background Full pulpotomy has been proposed as an alternative to root canal treatment in teeth with signs and symptoms indicative of irreversible pulpitis (IRP), but the evidence is limited, relying on underpowered studies with a high risk of bias. The aim of this study is to conduct a prospective meta-analysis (PMA) of individual participant data...

This study investigated the root canal morphology of the mandibular first molar in a Malaysian subpopulation. Using microcomputed tomography, 140 mandibular first molars were scanned. The canal configuration was described using Vertucci and Ahmed et al. (2017) systems. The two-dimensional parameters (perimeter, area, major and minor diameters, and...

This study aimed to evaluate the number of roots and root canal morphology types of maxillary premolars in relation to a patient’s gender and age in an Iraqi population using two classification systems. Cone beam computed tomography (CBCT) scans of 1116 maxillary premolars from 385 patients were evaluated for the number of roots and root canal morp...

Objectives This review aims to discuss the implications of anatomy of the root, pulp chamber and canals on pulpotomy and revitalization procedures (RPs) as treatment alternatives to root canal treatment procedures. Methods: This narrative review was undertaken to address two main questions – why remove vital pulp tissue in teeth with complex canal...

A novel system to classify root and canal morphology was recently introduced (Ahmed et al. 2017). This systematic review aimed to answer the following research question: Does Ahmed et al. system provide more accurate and practical classification of root and canal anatomy compared to other classifications? A literature search was conducted in Google...

With the ever-increasing understanding of tooth anatomy, there is a renewed focus on the pulp chamber as an important component of the root canal system. For example, the pulp chamber is of critical relevance during diagnostic procedures such as pulp sensibility tests, deep caries removal, vital pulp treatments, access cavity preparation, tooth whi...

Background: Full pulpotomy has been proposed as an alternative to root canal treatment in teeth with signs and symptoms indicative of irreversible pulpitis (IRP); but, the evidence is limited, relying on underpowered studies with a high risk of bias. The aim of this study is to conduct a prospective meta-analysis (PMA) of individual participant dat...

This report presents a case of revascularization of an open-apex maxillary central incisor in a 46-year-old patient using concentrated growth factor (CGF). After disinfection protocol, the apical foramen was mechanically enlarged, and autologous CGF gel was prepared and placed into the root canal to a level close to the cementoenamel junction. The...

Aim: This study aimed to examine the prescription of antibiotics for endodontic infections among undergraduate dental students. Methods: Two government Iraqi dental schools [(the University of Baghdad (UOB) (n=99) and University of Babylon (UB) (n=70)], and one private dental school [Osouldeen University College (OUC) (n=103)] were included in this...

Background A thorough understanding of root and canal anatomy is crucial for successful root canal treatment outcomes. This systematic review aims to explore the published micro-CT studies investigated the anatomy of root and canal system in permanent mandibular first molars. Method An electronic search was performed on Web of science, PubMed, and...

Objective: This study compared the effects of calcium chloride dihydrate (CaCl2.2H2O) on the physical properties and push-out bond strength of white Mineral Trioxide Aggregate (WMTA) and an experimental Malaysian Portland cement mixed with nano-zirconium oxide (nano-ZrO) [(radiopaque Malaysian Portland cement (RMPC). Mineral Trioxide Aggregate (MTA...

Purpose: To assess the application and accuracy of two systems (Vertucci et al 1974 and Ahmed et al. 2017) in classifying the root and canal morphology of human dentition amongst final year undergraduate, interns, and postgraduate dental students in India. Methods: The survey was conducted using physical and online presentation modes in two phases....

Stem cells are clonogenic cells capable of self-renewal and multi-lineage differentiation. Since the first isolation of dental pulp stem cells (DPSCs) in the early 2000s, stem cell research has continued to be an active topic in Endodontology. Over the last two decades, the literature has reported on a wide range of laboratory investigations relate...

The aim of direct pulp capping (DPC) is to promote pulp healing and mineralized tissue barrier formation by placing a dental biomaterial directly over the exposed pulp. Successful application of this approach avoids the need for further and more extensive treatment. In order to ensure a complete pulp healing with the placement of restorative materi...

This systematic review evaluated the effects of nano-sized cement particles on the properties of calcium silicate-based cements (CSCs). Using definite keywords, a literature search was conducted to identify studies that investigated properties of nano-calcium silicate-based cements (NCSCs). A total of 17 studies fulfilled the inclusion criteria. Re...

Background A thorough understanding of root and canal anatomy is crucial for successful root canal treatment outcomes. This systematic review aims to explore the published micro-CT based literature about the anatomy of root and canal system in permanent mandibular first molars. Method An electronic search was performed on Web of science, PubMed, an...

This chapter aims to discuss current advances in dental education and applications of e‐learning in Dentistry. It also discusses advances and applications of e‐learning tools and virtual reality combined with more recent improvements in knowledge and clinical practice in the field of endodontology. Common use of e‐learning and the support of inform...

Tooth discolouration caused by endodontic procedures can be an important aesthetic concern to the patient. The literature reveals a number of different approaches for the management of coronal discolouration. In this chapter, we discuss aetiological factors for coronal discolouration, its prevention, and management guidelines including patient prep...

The term ‘endodontic-periodontal’ (endo-perio) lesions has been used to describe lesions that involve the pulp and periodontal tissues either in a separate or a combined pattern. The diagnosis, management, and prognosis of teeth with endo-perio lesions are challenging for the clinician. The complexity of endo-perio lesions reflects the close develo...

This chapter aims to provide an update on the application of a new system for classifying root and canal morphology, accessory canals, and anomalies, to discuss anatomy of the root apex and apical foramen, and presents the growing body of knowledge on root and canal morphology in all tooth types. It aims to present updated knowledge on root and can...

Endodontic Advances and Evidence-Based Clinical Guidelines provides a comprehensive and up-to-date description of recent research findings and their impact on clinical practice. Using an innovative approach to the field, the book enables readers to translate the current body of knowledge on endodontic diseases and treatment into guidelines for enha...

The technical execution of root canal treatment procedures demands a thorough understanding and knowledge of root and canal anatomy. Over the decades, and with the aid of various research methods such as staining and clearing, 2D radiographic imaging, sectioning procedures, cone beam computed tomography and micro‐computed tomography, many laborator...

Objectives: To assess and discuss the clinical implications of endodontic access cavity (AC) designs Materials and methods: A systematic review of studies comparing the fracture resistance and/or endodontic outcomes between different endodontic cavity designs was conducted in two electronic search databases (PubMed and Web of Science) following the...

Advances in endodontic biomaterials are at the forefront of endodontic research. Along previous years, mineral trioxide aggregate has shown favorable biological properties and has been used for wide clinical applications. However, difficult handling properties, prolonged setting time, and discoloration potential are continued to be its main drawbac...

This cone beam computed tomography (CBCT) study aimed to evaluate the root canal morphology of permanent anteriors in Malaysian population using two classification systems (Vertucci 1984 and Ahmed et al 2017). CBCT images of 856 patients with 10,080 anterior teeth were analysed. Results showed that, except for six mandibular canines, all anterior t...

Adequate understanding and accurate characterization of normal and unusual root and canal morphology are essential requirements for successful root canal treatment. A new coding system for classifying root and canal morphology, accessory canals and anomalies has been introduced. In addition to technological advances related to experimental studies...

Virtual planning has become part and parcel of digital dentistry to ensure more precise planning, better treatment outcomes, and more effective communication between dental practitioners, dental technicians, and patients. In dentistry, CAD software programs are one way to achieve virtual treatment planning. Among the most crucial and critical steps...

Aim To evaluate the dental pulp responses to a novel mineral trioxide aggregate containing phosphorylated pullulan (MTAPPL) in rats after direct pulp capping. Methods Ninety-six cavities were prepared in maxillary first molars of 56 male Wister rats. The dental pulps were intentionally exposed and randomly divided into four groups according to the...

Adequate understanding and accurate characterization of normal and unusual root and canal morphology are essential requirements for successful root canal treatment. A new coding system for classifying root and canal morphology, accessory canals and anomalies has been introduced. In addition to technological advances related to experimental studies...

Adequate knowledge and accurate characterization of root and canal anatomy is an essential prerequisite for successful root canal treatment and endodontic surgery. Over the years, an ever-increasing body of knowledge related to root and canal anatomy of the human dentition has accumulated. To correct deficiencies in existing systems, a new coding s...

Objective The indiscriminate prescription of antibiotics has led to the emergence of resistance microbes worldwide. This study aimed to investigate the antibiotic prescribing practices amongst general dental practitioners and specialists in managing endodontic infections in the United Arab Emirates (UAE). Design General dental practitioners and sp...

Background There is limited data on the prevalence of Candida species in infected root canal systems of human teeth. We attempted to investigate the prevalence, genotype, virulence and the antifungal susceptibility of Candida albicans isolated from infected root canals of patients with primary and post-treatment infections in a UAE population. Met...

Objectives: Evaluate a new modified quaternary ammonium silane irrigant solution for its antimicrobial, cytotoxic and mechanical properties of dentine substrate. Methods: Root canal preparation was performed using stainless steel K-files™ and F4 size protaper with irrigation protocols of 6% NaOCl + 2% CHX; 3.5% QIS; 2% QIS and sterile saline. Bi...

This study aimed to assess regenerative treatment protocols for maturogenesis of immature teeth with apical periodontitis in dogs. Apical periodontitis was induced in immature premolars of 8 mongrel dogs teeth that were divided into 5 groups; Regeneration via blood clotting (REG group); Chitosan loaded with Demineralized bone matrix (REG-CD group);...

Introduction Negotiation, glide path, and preflaring are essential steps in root canal shaping procedures. This report aimed to discuss the terminology, basic concepts, and clinical considerations of negotiation, glide path, and preflaring procedures and the influence of these steps on root canal shaping. Methods This systematic review was underta...

Aim: To evaluate and compare the feedback of final year undergraduate dental students in eight Malaysian dental schools on the application of a new system for classifying root canal morphology in teaching and clinical practice. Methods: One PowerPoint presentation describing two classification systems for root canal morphology (Vertucci et al. 1...

Knowledge of root and canal morphology is essential for the effective practice of root canal treatment. Paediatric endodontics aims to preserve fully functional primary teeth in the dental arch; however, pulpectomy procedures in bizarre and tortuous canals encased in roots programmed for physiological resorption is a unique challenge. A new coding...

Introduction: This systematic review compared the anesthetic efficacy between Gow-Gates (GG), Vazirani-Akinosi (VA), and mental incisive (MI) nerve blocks (NBs) with inferior alveolar nerve blocks (IANBs) in mandibular teeth with irreversible pulpitis using meta-analysis and trial sequential analysis (TSA). Methods: Studies were identified from...

Introduction: This preliminary study compared clinical and radiographic outcomes of regenerative endodontic procedures (REPs) with that of conventional root canal treatment (CRCT) in necrotic mature teeth with periapical radiolucencies. Materials and Methods: Fifty six mature necrotic teeth with large periapical radiolucencies were distributed into...

Introduction: Endodontic treatment generally results in a wide range of postoperative pain intensity. The aim of this study was to investigate the effect of preoperative acupuncture on postoperative pain in molar teeth with symptomatic apical periodontitis. Methods: Thirty patients having symptomatic apical periodontitis with a preoperative and per...

Objectives: This systematic review aims to discuss the shaping properties and outcomes of nickel-titanium (NiTi) rotary and reciprocation systems assessed by micro-computed tomography. Data source: A literature search was conducted in PubMed and SCOPUS database until April 2018 to identify investigations examining the shaping properties and outc...

Abstract Objectives: To conduct a systematic review of the literature assessing the effect of the clinical application of different root canal instrumentation systems on endotoxins reduction extracted from the root canal system. Materials and methods: The literature search was conducted in two electronic data bases (PubMed and Scopus) using speci...

Aim To investigate the number of roots and root canal configurations using two coding systems and the root canal diverging and merging levels in extracted maxillary premolars in an Egyptian subpopulation using cone beam computed tomography (CBCT). Methodology: A total of 700 maxillary premolars were examined using CBCT in an Egyptian subpopulation...

Background: Portland cement based formulations continue to show continuous developments. Purpose: This study examined the pH and cytotoxic activity of a locally produced WPC (MAWPC) mixed with different radiopacifying agents [Barium Sulphate (BS), Niobium Oxide (NO) and Bismuth Oxide (BO)] on human periodontal ligament fibroblasts (HPLFs). Material...

Understanding the anatomy of roots and root canals is fundamental for successful root canal treatment and endodontic surgery. There are numerous reports on anatomical variations of teeth, and several classifications of canal configurations have been proposed. Recently, improved nondestructive digital imaging systems and the use of magnification in...

The aim of this systematic review was to address the question: Do different irrigating protocols have an impact on the dislocation resistance of mineral trioxide aggregate (MTA)- based materials? The review was performed using a well-defined search strategy in three databases (PubMed, Scopus, Web of Science) to include laboratory studies performed...

Objectives: A new coding system for classifying the roots, main and accessory canals as well as developmental anomalies has been introduced recently. This paper discusses the advantages and potential application of the new system in research and clinical practice. Methods: A comprehensive analysis was undertaken on the most common, existing classif...

Supernumerary teeth are developmental anomalies that might require endodontic treatment for functional and/or aesthetic reasons. A review of the literature was conducted using appropriate key words (Supernumerary’ OR ‘Supplemental’ OR “Rudimentary” AND ‘Tooth’. ‘Mesiodens’ OR ‘Paramolar’ OR ‘Distomolar’).in major endodontic journals (Australian End...

Aim: This report aims to present the application of partial pulpotomy procedures in fractured maxillary central incisors with immature roots. The application of this treatment approach in fractured immature permanent teeth is advantageous but a number of challenges exist particularly when the affected teeth are severed with complicated fractures Me...

Additional Supporting Information may be found in the online version of this article: Appendix S1. shows general guidelines and several examples of codes allocated for different anomalies.

Aim: A thorough understanding of root and canal anatomical variations is essential for achieving successful endodontic treatment. Literature continues to demonstrate complex root and canal anatomical variations in mandibular third molars which are sometimes in close approximation to the inferior alveolar canal. Methodology: A 26-year-old male patie...

Thorough knowledge of anatomical complexities of the root canal system has a direct impact on the effectiveness of canal preparation and filling, and is an essential prerequisite for successful root canal treatment. A wide range of complex variations in root canal anatomy exists, including root canal configuration type, developmental anomalies and...

Background: Advances in endodontic biomaterials are at the forefront of endodontic research. Purpose: This study aimed to compare the dentinogenic differentiation potential of extracts of two formulations [normal and fast set (FS) by the addition of CaCl2.2H2O] of white Portland cements (WPC) of a different origin [Aalborg, Malaysia (MA), Egypt (EG...

This review aims to evaluate the antimicrobial efficacy of calcium hydroxide against endodontic pathogens when used for seven days or longer. A systematic electronic literature search was performed in the PubMed, Embase, and EBSCO Dentistry & Oral Sciences Source databases by using appropriate key words to identify investigations written in the Eng...

Introduction: Biological testing of biomaterials on dental pulp stem cells (DPSCs) is one recent advance in endodontic research. The aim of this study was to compare the cytotoxicity, cell attachment properties, and dentinogenic differentiation potential of extracts of white mineral trioxide aggregate (WMTA)/calcium chloride dihydrate CaCl2.2H2O co...

Introduction: Low-level laser therapy (LLLT) is a practical, nonpharmacologic technique of reducing pain. This study evaluated the effect of LLLT on postoperative pain after root canal retreatment. Materials and Methods: This study enrolled patients (n=36) who required root canal retreatment (RCR) on mandibular molar teeth, presented with periapica...

Abstract Introduction: Literature reveals controversies with regards to the formation of para-chloroaniline (PCA) when chlorhexidine (CHX) is mixed with sodium hypochlorite (NaOCl). This study aimed to investigate the stability of PCA in presence of NaOCl, and to examine the in vitro cytotoxic effects of CHX/NaOCl reaction mixtures. Methods: Differ...

Objectives: This study aimed to evaluate the chemical and biological properties of fast-set white mineral trioxide aggregate (FS WMTA), which was WMTA combined with calcium chloride dihydrate (CaCl2.·2H2O), compared to that of WMTA. Materials and Methods: Surface morphology, elemental, and phase analysis were examined using scanning electron micros...

Abstract: Introduction: The removal of obturation materials from the root canal system is a primary objective in root canal retreatment procedures. This systematic review aims to discuss the effectiveness of different instrumentation procedures in removing root-canal filling materials assessed by microcomputed tomography. Methods: An electronic sea...

Aims To investigate preferences and experiences of general dental practitioners (GDPs) and endodontists in using NiTi rotary instruments (NiTi-RIs) for root canal retreatment (RCR), and to explore the influencing factors. Materials and Methods: Following a pilot study, the final questionnaire comprised 43 questions. The sample size was calculated c...