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  • Research Article
    Fused roots of maxillary molars: characterization and prevalence in a Latin American sub-population: a cone beam computed tomography study
    Maytté Marcano-Caldera, Jose Luis Mejia-Cardona, María del Pilar Blanco-Uribe, Elena Carolina Chaverra-Mesa, Didier Rodríguez-Lezama, Jose Hernán Parra-Sánchez
    Restor Dent Endod 2019;44(2):e16.   Published online April 22, 2019
    DOI: https://doi.org/10.5395/rde.2019.44.e16
    AbstractAbstract PDFPubReaderePub
    Objectives

    The upper molars generally have three roots; therefore, different combinations of fusion can occur, increasing the possibility of finding more complex root canal systems. The purpose of this study was to evaluate the prevalence and characterization of fused roots in first and second maxillary molars using cone-beam computed tomography (CBCT) in a Colombian population.

    Materials and Methods

    A total of 1274 teeth were evaluated, of which 534 were maxillary first molars and 740 were maxillary second molars. Axial sections were made at the cervical, middle, and apical levels to determine the prevalence of root fusion and the types of fusion.

    Results

    Overall, 43% of the molars (n = 551) presented some type of fused root. Root fusion was present in 23.4% of the maxillary first molars. The most frequent type of fused root was type 3 (distobuccal-palatal; DB-P) (58.9%). Root fusion was observed in 57.6% of the maxillary second molars, and the most prevalent type of fused root was type 6 (cone-shaped) (45.2%). Of the maxillary molars, 12.5% were classified as C-shaped.

    Conclusion

    Within the limitations of this study, there was a high prevalence of fused roots in maxillary molars in the Colombian population, mainly in the maxillary second molars. In first molars, the most common type of fused root was type 3 (DB-P) and in second molars, the most common type was type 6 (cone-shaped). Additionally, molars with root fusion presented variation at different levels of the radicular portion, with implications for treatment quality.

    Citations

    Citations to this article as recorded by  
    • Management of a rare bilateral maxillary first molar with six canals using a cone-beam computed tomography: Report of two cases
      Aishwarya D. Jain, Nimisha Chinmay Shah, Abhya Jain, Shreya S. Volety
      Saudi Endodontic Journal.2025; 15(2): 186.     CrossRef
    • Exploring the sex-associated differences in molars fused roots
      Maria Eduarda Nunis Locks, Erika Calvano Küchler, Leonardo Santos Antunes, Alice Corrêa Silva-Sousa, Natanael Henrique Ribeiro Mattos, Camila Paiva Perin, Paulo Henrique Condeixa França, Peter Proff, Christian Kirschneck, Flares Baratto-Filho
      Annals of Anatomy - Anatomischer Anzeiger.2024; 254: 152245.     CrossRef
    • Cone beam computed tomography analysis of the root and canal morphology of the maxillary second molars in a Syrian subpopulation
      Safaa Allawi, Mouhammad Al-Tayyan, Hassan Achour, Eyad Al-Toutangy, Yasser Alsayed Tolibah
      BMC Oral Health.2024;[Epub]     CrossRef
    • Prevalence of root fusion in canine maxillary second molar teeth using cone-beam computed tomography
      Kristin Linder, Scott MacGee, Loren Schultz
      Frontiers in Veterinary Science.2023;[Epub]     CrossRef
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      Cangül Keskin, Defne Toplu, Ali Keleş
      International Endodontic Journal.2023; 56(5): 637.     CrossRef
    • Root and canal-specific features of maxillary first molars with fused roots
      Katarina Beljic-Ivanovic, Branislav Karadzic
      Vojnosanitetski pregled.2022; 79(11): 1092.     CrossRef
    • Micro-CT Analysis of the Root Canal Configuration of Maxillary Second Molars with Fusion
      Cangül KESKİN, Özgür ÖZDEMİR, Ali KELEŞ
      European Annals of Dental Sciences.2022; 49(Suppl 1): 25.     CrossRef
    • Assessment of C-Shaped Canal Morphology in Mandibular and Maxillary Second Molars in an Iraqi Subpopulation Using Cone-Beam Computed Tomography
      Kazhan Abdalrahman, Ranjdar Talabani, Sara Kazzaz, Dlsoz Babarasul, Berndt Koslowski
      Scanning.2022; 2022: 1.     CrossRef
    • Analysis of Root and Canal Morphology of Fused and Separate Rooted Maxillary Molar Teeth in Turkish Population
      H Aydin
      Nigerian Journal of Clinical Practice.2021; 24(3): 435.     CrossRef
    • Investigating prevalence of dental anomalies in Eastern Province of Saudi Arabia through digital orthopantomogram
      Jehan ALHumaid, Maryam Buholayka, Arishiya Thapasum, Muhanad Alhareky, Maha Abdelsalam, Amr Bughsan
      Saudi Journal of Biological Sciences.2021; 28(5): 2900.     CrossRef
    • Preferred Reporting Items for Epidemiologic Cross-sectional Studies on Root and Root Canal Anatomy Using Cone-beam Computed Tomographic Technology: A Systematized Assessment
      Jorge N.R. Martins, Anil Kishen, Duarte Marques, Emmanuel João Nogueira Leal Silva, João Caramês, António Mata, Marco A. Versiani
      Journal of Endodontics.2020; 46(7): 915.     CrossRef
    • Second mesiobuccal root canal in maxillary molars—A systematic review and meta-analysis of prevalence studies using cone beam computed tomography
      Jorge N.R. Martins, Duarte Marques, Emmanuel João Nogueira Leal Silva, João Caramês, António Mata, Marco A. Versiani
      Archives of Oral Biology.2020; 113: 104589.     CrossRef
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