Displaying publications 1 - 20 of 83 in total

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  1. Ahmed HM, Abbott PV
    Int Endod J, 2012 Oct;45(10):883-97.
    PMID: 22621247 DOI: 10.1111/j.1365-2591.2012.02071.x
    Advances in endodontic materials and techniques are at the forefront of endodontic research. Despite continuous improvements, tooth discolouration, especially in anterior teeth, is considered an undesirable consequence following endodontic treatment as it creates a range of aesthetic problems. This article aims to discuss the intrinsic and internalized tooth discolouration caused by endodontic procedures, and to address the discolouration potential of materials used during root canal treatment, including root canal irrigants, intra-canal medicaments, endodontic and post-endodontic filling materials. In addition, the discolouration patterns caused by combined endodontic and nonendodontic aetiological factors are discussed. The recommended guidelines that should be followed by dental practitioners to prevent and manage tooth discolouration are also outlined.
    Matched MeSH terms: Root Canal Therapy/adverse effects*
  2. Ahmad M
    Endod Dent Traumatol, 1991 Apr;7(2):55-8.
    PMID: 1782894
    The efficacy of two ultrasonic units in shaping curved canals in teeth were compared. Twenty teeth were instrumented using the Cavi-Endo unit at a power setting 1 using the technique recommended by the manufacturer. Another group of 20 teeth received similar treatment but were instrumented with the Enac unit. The time taken to instrument each canal was recorded. The pre- and post-instrumented radiographs of the teeth of x 10 magnification were taken using a microfocal technique. The radiographs were subjected to a subtraction technique to result in composite images of the pre- and post-instrumented shapes. The canal shape and the incidence of elbows were evaluated using various measurements taken from the radiographs. The manner the dentine was removed was similar in both groups. All canals exhibited unequal removal along the canal with more dentine being removed at the coronal end. The Enac group exhibited a higher incidence of elbows which occurred further apically than those in the Cavi-Endo group. There was no significant difference between groups in the following: time of instrumentation, amount of apical and coronal canal enlargement, apical deviation and change in width at the elbow. These findings were no different from those of another study using simulated canals.
    Matched MeSH terms: Root Canal Therapy/instrumentation*
  3. Ahmad M
    Endod Dent Traumatol, 1990 Feb;6(1):12-5.
    PMID: 2202589
    The resonant characteristics of ultrasonic files driven by the Cavi-Endo unit were examined. The investigation was carried out by evaluating the pattern of oscillation and the power emitted by the ultrasonic files. It was observed that the files oscillated in a sinusoidal fashion, exhibiting a standing wave pattern along the file. The power emitted was found to be directly proportional to the flexibility of the file. Such behaviour is typical of a system that exhibits resonance.
    Matched MeSH terms: Root Canal Therapy/instrumentation*
  4. Ahmad M
    Endod Dent Traumatol, 1990 Jun;6(3):104-8.
    PMID: 2079012
    Matched MeSH terms: Root Canal Therapy/instrumentation*
  5. Ahmad M
    Endod Dent Traumatol, 1990 Oct;6(5):230-1.
    PMID: 2133315
    The temperature rise of the irrigant in the root canal during free vibration of the ultrasonic file was studied in vitro in 10 human teeth. The mean temperature rise was found to be 0.6 degrees C. The minimal temperature increase may not significantly contribute to the effectiveness of ultrasonic root canal instrumentation.
    Matched MeSH terms: Root Canal Therapy/instrumentation*
  6. Luddin N, Ahmed HM
    J Conserv Dent, 2013 Jan;16(1):9-16.
    PMID: 23349569 DOI: 10.4103/0972-0707.105291
    Complete debridement and disinfection of the root canal system are fundamental requirements for successful endodontic treatment. Despite the morphological challenges of the internal root anatomy, root canal irrigants play an important role in the optimization of the root canal preparation, which is essentially a chemo-mechanical procedure. Enterococcus faecalis is one of the most resistant microorganisms that dominants the microbial ecosystem of persistent periradicular lesions in retreatment cases. For that reason, many in vitro and in vivo studies evaluated and compared the antibacterial activity of sodium hypochlorite and chlorhexidine at varying concentrations using different experimental models against this microorganism. However, many controversies with regard to the ideal irrigant and concentration do in fact exist. Hence, this review aims to discuss the antibacterial activity of these two main root canal irrigants against Enterococcus faecalis using the agar diffusion and direct contact methods and the possible modulating factors responsible for inconsistent findings among different studies. In addition, the disinfection potential of both chemical agents on gutta percha and Resilon cones are also discussed. The source of this review was conducted through an electronic literature search using PubMed database from December 1997 until December 2011, which analyze the related laboratory investigations of both irrigants, published in major endodontic journals.
    Matched MeSH terms: Root Canal Therapy
  7. Hashem AAR, Ahmed HMA
    Eur Endod J, 2017;2(1):1-4.
    PMID: 33403327 DOI: 10.5152/eej.2017.17042
    A comprehensive knowledge and understanding of root canal anatomical variations are essential for successful root canal treatment. Mandibular molar teeth show considerable variations in their external and internal radicular morphology that require special attention from dental practitioners to provide the best clinical outcomes to the patients. This report aims to present root canal treatment of a mandibular first molar that has six separate root canals (three root canals in the mesial roots and three in the distal roots [236 M3 D3]). This report points out the importance of proper exploration for identifying additional canals in mandibular molars.
    Matched MeSH terms: Root Canal Therapy
  8. Karobari MI, Noorani TY, Halim MS, Dummer PMH, Ahmed HMA
    Int Endod J, 2019 Jun;52(6):917-919.
    PMID: 31074504 DOI: 10.1111/iej.13106
    Matched MeSH terms: Root Canal Therapy
  9. Arslan H, Doğanay E, Karataş E, Ünlü MA, Ahmed HMA
    J Endod, 2017 Nov;43(11):1765-1769.
    PMID: 28967495 DOI: 10.1016/j.joen.2017.06.028
    INTRODUCTION: Low-level laser therapy (LLLT) is a practical, nonpharmacologic technique for reducing pain. This study evaluated the effect of LLLT on postoperative pain after root canal retreatment (RCR).

    METHODS: This study enrolled patients (N = 36) who required root canal retreatment (RCR) on mandibular molar teeth, presented with periapical lesions with periapical index scores of 2 or 3, and had a pain visual analog scale (VAS) <50 and a percussion pain VAS <50. The participants were divided into 2 groups: (1) patients scheduled for RCR followed by LLLT (n = 18) and (2) patients scheduled for RCR followed by a mock LLLT (placebo) (n = 18). Postoperative pain was assessed using the VAS. Data were collected and statistically analyzed with the chi-square test, the independent sample t test, and the Mann-Whitney U test (P = .05).

    RESULTS: On the first 4 days, postoperative pain significantly reduced in the LLLT group compared with the placebo group (P  .05). The number of patients who needed analgesics was lower in the LLLT group than in the placebo group (P 

    Matched MeSH terms: Root Canal Therapy/adverse effects*; Root Canal Therapy/methods
  10. Roy D, Chowdhury F, Shaik MM, Alam MK
    Dent Res J (Isfahan), 2014 Mar;11(2):222-7.
    PMID: 24932193
    Endodontic leakage research focus mainly on the quality of the apical seal of the root canal system and the newly introduced resilon/epiphany system claim to be superior to Gutta-percha in respect to obturation procedure. The aim of this study is to evaluate the root canal obturation completed by resilon/epiphany system.
    Matched MeSH terms: Root Canal Therapy
  11. Karobari MI, Khijmatgar S, Noorani TY, Assiry A, Alharbi T
    J Conserv Dent, 2021 02 10;23(5):518-521.
    PMID: 33911363 DOI: 10.4103/JCD.JCD_220_19
    Objective: The aim of this study is to determine the role of clinical audit in improving endodontic treatment outcomes.

    Materials and Methods: An audit at the department of endodontics at dental specialty centre kingdom of Saudi Arabia was carried out. The audit was conducted by developing endodontics treatment and success predictors based on evidence, that can be measured for endodontic care. A total of 12 months' data was examined from the previous dental records. Ten clinical cards were which included root canal treatment were selected. The audit was carried out for a minimum of 50 teeth and a maximum of 200 teeth. The radiographs of record cards were studied and a single dentist completed the audit tool.

    Results: The vitality test was performed in 1.98% cases, intra-canal medicament was used and named in 3.96% cases, 3.96% the teeth were extracted due to endodontic failure. Further, in 6.93% of the cases that were identified had certain spaces but overall root canal filling was evaluated as satisfactory.

    Conclusion: The vitality test, type of intracanal medicament, and assessment of root canal filling were not done, but there was an overall performance of predictors for endodontic treatment.

    Matched MeSH terms: Root Canal Therapy
  12. Karobari MI, Adil AH, Basheer SN, Murugesan S, Savadamoorthi KS, Mustafa M, et al.
    Comput Math Methods Med, 2023;2023:7049360.
    PMID: 36761829 DOI: 10.1155/2023/7049360
    AIM: This comprehensive review is aimed at evaluating the diagnostic and prognostic accuracy of artificial intelligence in endodontic dentistry.

    INTRODUCTION: Artificial intelligence (AI) is a relatively new technology that has widespread use in dentistry. The AI technologies have primarily been used in dentistry to diagnose dental diseases, plan treatment, make clinical decisions, and predict the prognosis. AI models like convolutional neural networks (CNN) and artificial neural networks (ANN) have been used in endodontics to study root canal system anatomy, determine working length measurements, detect periapical lesions and root fractures, predict the success of retreatment procedures, and predict the viability of dental pulp stem cells. Methodology. The literature was searched in electronic databases such as Google Scholar, Medline, PubMed, Embase, Web of Science, and Scopus, published over the last four decades (January 1980 to September 15, 2021) by using keywords such as artificial intelligence, machine learning, deep learning, application, endodontics, and dentistry.

    RESULTS: The preliminary search yielded 2560 articles relevant enough to the paper's purpose. A total of 88 articles met the eligibility criteria. The majority of research on AI application in endodontics has concentrated on tracing apical foramen, verifying the working length, projection of periapical pathologies, root morphologies, and retreatment predictions and discovering the vertical root fractures.

    CONCLUSION: In endodontics, AI displayed accuracy in terms of diagnostic and prognostic evaluations. The use of AI can help enhance the treatment plan, which in turn can lead to an increase in the success rate of endodontic treatment outcomes. The AI is used extensively in endodontics and could help in clinical applications, such as detecting root fractures, periapical pathologies, determining working length, tracing apical foramen, the morphology of root, and disease prediction.

    Matched MeSH terms: Root Canal Therapy/methods
  13. Soh JA, Sheriff SO, Ramar NA, Pulikkotil SJ, Nagendrababu V, Neelakantan P, et al.
    Aust Endod J, 2019 Aug;45(2):171-176.
    PMID: 30230109 DOI: 10.1111/aej.12303
    In endodontic infections, inflammatory mediators such as cytokines are released, recruited and retained until the infection is eradicated. Root canal therapy is performed to prevent the spread of infection. The aim of this study was to investigate the effects of root canal debridement (cleaning and shaping) on periapical inflammation by measuring the levels of inflammatory cytokines, Interleukin-8 (IL-8) and Interleukin-10 (IL-10). The study includes twenty patients with pulp necrosis and asymptomatic apical periodontitis. Periradicular sample was collected using paper points before and after root canal debridement. Cytokine levels were determined by Sandwich Enzyme-Linked Immunosorbent Assay (ELISA). Data were analysed using paired t-test (PASW Statistics 18) (P = 0.05). All samples showed the presence of IL-8 and IL-10 prior to root canal debridement. Significantly reduced levels (P < 0.05) of IL-8 and IL-10 were detected after root canal debridement. In conclusion, root canal debridement significantly decreased the levels of the tested pro- and anti-inflammatory cytokine in the periradicular interstitial fluid.
    Matched MeSH terms: Root Canal Therapy
  14. Varghese LL, Bhattacharya A, Sharma P, Apratim A
    BMJ Case Rep, 2020 Jul 20;13(7).
    PMID: 32690568 DOI: 10.1136/bcr-2020-234699
    Chronic apical periodontitis associated with dental pulp necrosis is the main cause of odontogenic extraoral cutaneous sinus openings. These tracts are often initially misdiagnosed unless the treating clinician considers a dental aetiology. This case report of a 19-year-old woman describes the diagnosis and treatment of an extraoral cutaneous sinus tract of odontogenic origin. Non-surgical conservative endodontic therapy was opted as the involved teeth were restorable. One month after the completion of obturation, there was closure of the sinus tract. One year follow-up showed complete resolution of the sinus tract with minimal scar formation.
    Matched MeSH terms: Root Canal Therapy/methods*
  15. Vivekananda Pai AR, Arora V
    J Conserv Dent, 2018 4 21;21(2):230-232.
    PMID: 29674831 DOI: 10.4103/JCD.JCD_316_16
    A metallic obstruction in the canal orifice of a maxillary right canine could not be bypassed during endodontic treatment. Aids such as ultrasonics and retrieval kits were not available for the removal of the obstruction. Therefore, a novel approach using a disposable syringe needle was employed. A 22-gauge needle was inserted into the orifice and turned in an arc with a gentle apical pressure and alternate rocking motion around the obstruction. This procedure was repeated few times to cut dentin and successfully dislodge and remove the obstruction using the sharp beveled tip of the needle. This case report demonstrates that, in the absence of other aids, the use of a disposable syringe needle is a simple, economical, and yet an effective technique for conservative removal of dentin and to dislodge and remove an obstruction from the root canal. However, its effectiveness depends on case selection and straight-line accessibility to the obstruction.
    Matched MeSH terms: Root Canal Therapy
  16. Che Ab Aziz, Z.A.
    Ann Dent, 2008;15(2):67-70.
    MyJurnal
    Aim: To manufacture a clinical simulation apparatus for the undergraduates' endodontic radiography teaching Objectives: • To provide a model for teaching of parallax method using Kelly's forcep • To provide a model for undergraduates to practice radiographic localization employing parallax method. • To allow students to practice taking radiographs in a way that simulates the clinical situations with a good diagnostic quality Methods: Impressions of a dentate arch (maxillary and mandibullary) were used to form a stone cast. A section of the cast, in the area where the natural teeth were to be placed, is sectioned and removed. Three maxillary extracted teeth (canine, first and second premolar) were selected and mounted with acrylic resin at the sectioned area. The resin was cured in a light box. The arches were mounted in a phantom head with a placement of rubber cheek. The first premolar was isolated with rubber dam. The intraoral holder (Kelly's forcep) was attached to a robotic arm. The students were taught the correct angulations of the x-ray cone for the paralleling technique and parallax method using Kelly's forcep during root canal treatment. Results: All students managed to complete the exercise and were considered competent when they produced acceptable quality of radiographs. Conclusion: The model described was improvised from a model that has been used during the past 2 years for undergraduates' endodontic courses. It has been well accepted as it simulates the clinical situation more closely than was possible previously.
    Matched MeSH terms: Root Canal Therapy
  17. Neelakantan P, Romero M, Vera J, Daood U, Khan AU, Yan A, et al.
    Int J Mol Sci, 2017 Aug 11;18(8).
    PMID: 28800075 DOI: 10.3390/ijms18081748
    Microbiota are found in highly organized and complex entities, known as biofilms, the characteristics of which are fundamentally different from microbes in planktonic suspensions. Root canal infections are biofilm mediated. The complexity and variability of the root canal system, together with the multi-species nature of biofilms, make disinfection of this system extremely challenging. Microbial persistence appears to be the most important factor for failure of root canal treatment and this could further have an impact on pain and quality of life. Biofilm removal is accomplished by a chemo-mechanical process, using specific instruments and disinfecting chemicals in the form of irrigants and/or intracanal medicaments. Endodontic research has focused on the characterization of root canal biofilms and the clinical methods to disrupt the biofilms in addition to achieving microbial killing. In this narrative review, we discuss the role of microbial biofilms in endodontics and review the literature on the role of root canal disinfectants and disinfectant-activating methods on biofilm removal.
    Matched MeSH terms: Root Canal Therapy/methods
  18. Hany Mohamed Aly Ahmed, Deepti Saini
    Archives of Orofacial Sciences, 2012;7(2):101-106.
    MyJurnal
    Sufficient knowledge on the root and root canal anatomy is essential for practicing root canal treatment. The mesiobuccal roots of maxillary molar teeth present an endodontic challenge due to their wide variability and complexity of their internal morphological landmarks. A review on the literature indicates that the prevalence of a third mesiobuccal root canal in the mesiobuccal root of maxillary molar teeth may reach 9%, and the root canal configuration usually is type XV (3-2). These reported data reveal the importance of absolute awareness for this anatomical aberration that requires special attention from dental practitioners while commencing root canal treatment in maxillary molar teeth. Hence, this article aims to report and describe the management of a maxillary first molar tooth with three mesiobuccal root canals, but with an unusual configuration.
    Matched MeSH terms: Root Canal Therapy
  19. Varadan P, Ganesh A, Konindala R, Nagendrababu V, Ashok R, Deivanayagam K
    Cureus, 2017 Oct 26;9(10):e1805.
    PMID: 29308333 DOI: 10.7759/cureus.1805
    Introduction Root canal irrigants play an important role in reducing intracanal microorganisms, which in turn helps in achieving a successful outcome for the root canal treatment. Objective To compare the antibacterial efficacy of alexidine and chlorhexidine against Enterococcus faecalis. Methods A total of 50 extracted single-rooted teeth were randomly divided into five groups after being infected with Enterococcus faecalis. The groups were based on irrigants used: Group I - 0.4% alexidine; Group II - 1% alexidine; Group III - 1.5% percent alexidine; Group IV - 2% alexidine; Group V - 2% chlorhexidine. Following irrigation, colony-forming units were determined from the dentinal shavings collected at 400 µm depth. Results Use of 2% alexidine reduced the bacteria effectively when compared to 0.4%, 1%, and 1.5% alexidine. A statistically significant difference was not observed between 2% alexidine and 2% chlorhexidine. Discussion Alexidine, due to its higher virulence factors for bacteria and better bacterial penetrability at 400 µm depth of dentin showed better eradication of Enterococcus faecalis in comparison to chlorhexidine. Conclusion The use of 2% alexidine against Enterococcus faecalis at 400 µm depth of dentin has efficacy comparable to chlorhexidine. Hence, alexidine can be used as an alternative irrigant for chlorhexidine during endodontic procedures.
    Matched MeSH terms: Root Canal Therapy
  20. Ahmed HMA, Musale PK, El Shahawy OI, Dummer PMH
    Int Endod J, 2020 Jan;53(1):27-35.
    PMID: 31390075 DOI: 10.1111/iej.13199
    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 physiologic resorption are unique challenges. A new coding system for classifying the roots and main canals (https://doi.org/10.1111/iej.12685), accessory canals (https://doi.org/10.1111/iej.12800) and developmental anomalies (https://doi.org/10.1111/iej.12867) has been introduced recently. This paper discusses challenges for describing root and canal morphology in primary teeth and describes the potential application of the new classification system for root canals in the primary dentition.
    Matched MeSH terms: Root Canal Therapy
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