Restorative Dentistry & Endodontics

Research Articles

CBCT study of mandibular first molars with a distolingual root in Koreans: Hee-Ho Kim, Hyoung-Hoon Jo, Jeong-Bum Min, Ho-Keel Hwang; Restor Dent Endod 2018;43(3):e33. Published online July 30, 2018; DOI: https://doi.org/10.5395/rde.2018.43.e33

Objectives

This study aimed to investigate the prevalence of a separate distolingual root and to measure the thickness of the buccal cortical bone in mandibular first molars in Koreans using cone-beam computed tomography (CBCT) images.

Materials and Methods

High-quality CBCT data from 432 patients were analyzed in this study. The prevalence of a separate distolingual root of the mandibular first molar was investigated. The distance from the distobuccal and distolingual root apices to the outer surface of the buccal cortical bone was measured. We also evaluated the thickness of the buccal cortical bone.

Results

The prevalence of a separate distolingual root (2 separate distal roots with 1 canal in each root; 2R2C) was 23.26%. In mandibular first molars with 2R2C, the distance from the distobuccal root apex to the outer surface of the buccal cortical bone was 5.51 mm. Furthermore, the distance from the distolingual root apex to the outer surface of the buccal cortical bone was 12.09 mm. In mandibular first molars with 2R2C morphology, the thickness of the buccal cortical bone at the distobuccal root apex of the mandibular first molar was 3.30 mm. The buccal cortical bone at the distobuccal root apex was significantly thicker in the right side (3.38 mm) than the left side (3.09 mm) (p < 0.05).

Conclusions

A separate distolingual root is not rare in mandibular first molars in the Korean population. Anatomic and morphologic knowledge of the mandibular first molar can be useful in treatment planning, including surgical endodontic treatment.

Citations

Citations to this article as recorded by

Radix molaris is a hidden truth of mandibular first permanent molars: A descriptive- analytic study using cone beam computed tomography
Mohammed A. Alobaid, Saurabh Chaturvedi, Ebtihal Mobarak S. Alshahrani, Ebtsam M. Alshehri, Amal S. Shaiban, Mohamed Khaled Addas, Giuseppe Minervini
Technology and Health Care.2023; 31(5): 1957. CrossRef
Prevalence of radix entomolaris in India and its comparison with the rest of the world
Sumit MOHAN, Jyoti THAKUR
Minerva Dental and Oral Science.2022;[Epub] CrossRef
A critical analysis of laboratory and clinical research methods to study root and canal anatomy
Hany Mohamed Aly Ahmed
International Endodontic Journal.2022; 55(S2): 229. CrossRef
Three-Rooted Permanent Mandibular First Molars: A Meta-Analysis of Prevalence
Nyan M. Aung, Kyaw K. Myint, Luca Testarelli
International Journal of Dentistry.2022; 2022: 1. CrossRef
Reproducibilidad en el diagnóstico imagenológico de periodontitis apical a partir de CBCT
Sandra Milena Buitrago Rojas, Yeny Zulay Castellanos Dominguez, Jhonny Alexander Contreras Vargas, Yosdi Tomás Solano Diaz, Eder Fabián Gutierrez Argote
Acta Odontológica Colombiana.2020;[Epub] CrossRef
Assessment of Root and Root Canal Morphology of Human Primary Molars using CBCT
Yoomin Choi, Seonmi Kim, Namki Choi
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY.2020; 47(1): 25. CrossRef
The prevalence of radix molaris in the mandibular first molars of a Saudi subpopulation based on cone-beam computed tomography
Hassan AL-Alawi, Saad Al-Nazhan, Nassr Al-Maflehi, Mazen A. Aldosimani, Mohammed Nabil Zahid, Ghadeer N. Shihabi
Restorative Dentistry & Endodontics.2020;[Epub] 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
Evaluation of roots and canal systems of mandibular first molars in a vietnamese subpopulation using cone-beam computed tomography
KhoaVan Pham, AnhHoang Lan Le
Journal of International Society of Preventive and Community Dentistry.2019; 9(4): 356. CrossRef

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Analysis of C-shaped root canal configuration in maxillary molars in a Korean population using cone-beam computed tomography: Hyoung-Hoon Jo, Jeong-Bum Min, Ho-Keel Hwang; Restor Dent Endod 2016;41(1):55-62. Published online January 29, 2016; DOI: https://doi.org/10.5395/rde.2016.41.1.55

Abstract PDF PubReader ePub

Objectives

The purpose of this study was to investigate the incidence of root fusion and C-shaped root canals in maxillary molars, and to classify the types of C-shaped canal by analyzing cone-beam computed tomography (CBCT) in a Korean population.

Materials and Methods

Digitized CBCT images from 911 subjects were obtained in Chosun University Dental Hospital between February 2010 and July 2012 for orthodontic treatment. Among them, a total of selected 3,553 data of maxillary molars were analyzed retrospectively. Tomography sections in the axial, coronal, and sagittal planes were displayed by PiViewstar and Rapidia MPR software (Infinitt Co.). The incidence and types of root fusion and C-shaped root canals were evaluated and the incidence between the first and the second molar was compared using Chi-square test.

Results

Root fusion was present in 3.2% of the first molars and 19.5% of the second molars, and fusion of mesiobuccal and palatal root was dominant. C-shaped root canals were present in 0.8% of the first molars and 2.7% of the second molars. The frequency of root fusion and C-shaped canal was significantly higher in the second molar than the first molar (p < 0.001).

Conclusions

In a Korean population, maxillary molars showed total 11.3% of root fusion and 1.8% of C-shaped root canals. Furthermore, root fusion and C-shaped root canals were seen more frequently in the maxillary second molars.

Citations

Citations to this article as recorded by

A Cone‐Beam Computed Tomography Evaluation of C‐Shaped Canal Configuration in Maxillary Molars Among an Iranian Population
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Endodontic treatment of a C‐shaped mandibular second molar with narrow dentinal thickness: A case report
Mina Mehrjouei, Hamid Jafarzadeh, Pourya Esmaeelpour, Maryam Khorasanchi
Clinical Case Reports.2024;[Epub] CrossRef
Evaluation of 2- and 3-dimensional anatomic parameters of C-shaped root canals with cone beam computed tomography, microcomputed tomography, and nanocomputed tomography
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Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology.2023; 136(6): 759. CrossRef
Cone-Beam Computed Tomography (CBCT) Analysis of an Unusual Configuration of the Upper First Molar With a C-shaped Canal With Apically Fused Roots: A Case Report
Kapil D Wahane, Anand V Bansod, Sudha mattigatti, Rushikesh Mahaparale, Yuvraj B Rote, Mayur B Wanjari
Cureus.2023;[Epub] 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
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Root and canal-specific features of maxillary first molars with fused roots
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Kkot-Byeol Bae, Bin-Na Lee, Hoon-Sang Chang, In-Nam Hwang, Won-Mann Oh, Yun-Chan Hwang
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Kai Chen, Xing Ran, Yan Wang
World Journal of Clinical Cases.2022; 10(32): 12036. CrossRef
Evaluation of C-shaped canals in maxillary molars in a Chinese population using CBCT
Yuyan Qian, Yamei Li, Jukun Song, Ping Zhang, Zhu Chen
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BMC Oral Health.2022;[Epub] CrossRef
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Emre KÖSE, Rüya AK
Clinical and Experimental Health Sciences.2021; 11(3): 444. CrossRef
Maxillary First Molars with Two Palatal Root Canals
Kun-Hwa Sung, Ho-Keel Hwang, Hyoung-Hoon Jo, Konstantinos Michalakis
Case Reports in Dentistry.2021; 2021: 1. 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
Evaluation of root and root canal morphology of elderly Korean patients maxillary molars using cone-beam computed tomography
Tae-Yong Lee, Mi-Yeon Kim, Sun-Ho Kim, Jeong-Hee Kim
The Journal of Korean Academy of Prosthodontics.2020; 58(2): 95. CrossRef
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Archives of Oral Biology.2020; 113: 104589. CrossRef
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BMC Medical Imaging.2017;[Epub] CrossRef

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