Root and canal morphology of the maxillary first molar: A micro-computed tomography-focused observation of literature with illustrative cases. Part 2: Internal root morphology

Authors

DOI:

https://doi.org/10.17159/sadj.v79i02.16864

Keywords:

Accessory canals, apical deltas, chamber canals, MB2, MB3, micro-CT, root canals, root canal configurations

Abstract

The complexity of root canal morphology can influence cleaning and shaping of the root canal system and, ultimately, treatment outcomes. Undiscovered root canal morphology can greatly reduce the prognosis of endodontic treatment due to the preservation of offending organisms and their by products. The maxillary first molar has been identified as one of the most challenging teeth to treat endodontically due to its complex internal anatomy, the presence of additional and accessory canals and intricate root canal configurations. This paper is the second of two that provide a micro computed tomography (micro-CT)-focused overview of available literature on various aspects of the root and canal morphology of the maxillary first permanent molar. The aim of this paper is to provide an overview of relevant aspects of the internal root morphology in different populations. The content is supported by illustrative micro-CT images and clinical cases or images.

Downloads

Download data is not yet available.

References

Wu MK, Wesselink PR, Walton RE. Apical terminus location of root canal treatment procedures. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2000; 89: 9-–103. DOI: 10.1016/S1079-2104(00)80023-2 DOI: https://doi.org/10.1016/S1079-2104(00)80023-2

Vertucci FJ. Root canal morphology and its relationship to endodontic procedures. Endod Topics 2005; 10: 3-29. DOI: 10.1111/j.1601-1546.2005.00129.x DOI: https://doi.org/10.1111/j.1601-1546.2005.00129.x

Chourasia HR, Meshram GK, Warhadpande M, Dakshindas D. Root canal morphology of mandibular first permanent molars in an Indian population. Int J Dent. 2012; 2012:16. DOI: https://doi.org/10.1155/2012/745152

Jonker C, Van der Vyver PJ. Factors influencing the lifespan of modern root canal instruments – a literature review. S Afr Dent J. 2013; 68: 14-23.

Peters O. Current challenges and concepts in the preparation of root canal systems: A review. J Endod. 2004; 30: 559–67. DOI: 10.1097/01.DON.0000129039.59003.9D DOI: https://doi.org/10.1097/01.DON.0000129039.59003.9D

Wolcott J, Ishley D, Kennedy W, Johnson S, Minnich S, Meyers J. A five-year clinical investigation of second mesiobuccal canals in endodontically treated and retreated maxillary molars. J Endod. 2005; 31: 22–-4. DOI: 10.1097/01.don.0000140581.38492.8b DOI: https://doi.org/10.1097/01.don.0000140581.38492.8b

Blattner TC, George N, Lee CC, Kumar V, Yelton CDJ. Efficacy of cone-beam computed tomography as a modality to accurately identify the presence of second mesiobuccal canals in maxillary first and second molars: A pilot study. J Endod. 2010; 36: 86-–70. DOI: 10.1016/j.joen.2009.12.023 DOI: https://doi.org/10.1016/j.joen.2009.12.023

Degerness RA, Bowles WR. Dimension, anatomy and morphology of the mesiobuccal root canal system in maxillary molars. J Endod. 2010; 36: 985-9. DOI: https://doi.org/10.1016/j.joen.2010.02.017

Gutmann JL, Fan B. Tooth morphology, isolation, and access. In: Berman LH, Hargreaves KM, 12th ed. Cohen’s pathways of the pulp. St Louis: Elsevier, 2016: 103-208.

Martins JNR, Alkhawas MAM, Altaki Z, et al. Worldwide analyses of maxillary first molar second mesiobuccal prevalence: A multicenter cone-beam computed tomographic study. J Endod. 2018; 44: 1641-9. DOI: 10.1016/j.joen.2018.07.027 DOI: https://doi.org/10.1016/j.joen.2018.07.027

Fernandes NA, Herbst D, Postma TC, Bunn BK. The prevalence of second canals in the mesiobuccal root of maxillary molars: A cone-beam computed tomography study. Aust Endod J. 2019; 45: 6–-50. DOI: 10.1111/aej.12263 DOI: https://doi.org/10.1111/aej.12263

Filpo-Perez C, Bramante CM, Villas-Boas MH, Húngaro Duarte MA, Versiani MA, Ordinola-Zapata R. Micro-computed tomographic analysis of the root canal morphology of the distal root of mandibular first molar. J Endod. 2015; 41: 21–-6. DOI: 10.1016/j.joen.2014.09.024 DOI: https://doi.org/10.1016/j.joen.2014.09.024

Tomaszewska IM, Jarzebska A, Skinningsrud B, Pekala PA, Wronski S, Iwanaga J. An original Micro-CT study and meta-analysis of the internal and external anatomy of maxillary molars: Implications for endodontic treatment: Morphology of maxillary molars. Clin Anat. 2018; 31: 83-–53. DOI: 10.1002/ca.23201 DOI: https://doi.org/10.1002/ca.23201

Versiani MA, Sousa-Neto MD, Basrani B. The root canal dentition. In: Permanent dentition, 1st ed. Heidelberg: Springer, 2018: 89–240. DOI: https://doi.org/10.1007/978-3-319-73444-6

Ahmed HMA, Ibrahim N, Mohamad NS, et al. Application of a new system for classifying root and canal anatomy in studies involving micro-computed tomography and cone-beam computed tomography: Explanation and elaboration. Int Endod J. 2021; 54: 106-82. DOI: https://doi.org/10.1111/iej.13486

Ahmed HMA, Versiani MA, De-Deus G, Dummer PMH. A new system for classifying root and root canal morphology. Int Endod J. 2017; 50: 761-70. DOI: https://doi.org/10.1111/iej.12685

Anderegg AL, Hajdarevic D, Wolf TG. Interradicular canals in 213 mandibular and 235 maxillary molars by means of micro-computed tomographic analysis: An ex vivo study. J Endod. 2022; 48: 234-9. DOI: https://doi.org/10.1016/j.joen.2021.11.015

Cotton TP, Geisler TM, Holden DT, Schwartz SA, Schindler WG. Endodontic applications of cone-beam volumetric tomography. J Endod. 2007; 33: 1121–1132. DOI :10.1016/j.joen.2007.06.011 DOI: https://doi.org/10.1016/j.joen.2007.06.011

Nielsen RB, Alyassin AM, Peters DD, Carnes DL, Lancaster J. Microcomputed tomography: An advanced system for detailed endodontic research. J Endod. 1995; 21: 561-8. DOI: https://doi.org/10.1016/S0099-2399(06)80986-6

Stauber M, Müller R. Micro-computed tomography: A method for the non destructive evaluation of the three-dimensional structure of biological specimens. Methods Mol Biol. 2008; 455: 273-92. DOI: 10.1007/978-1-59745-104-8_19 DOI: https://doi.org/10.1007/978-1-59745-104-8_19

Briseño-Marroquín B, Paqué F, Maier K, Willershausen B, Wolf TG. Root canal morphology and configuration of 179 maxillary first molars by means of micro computed tomography: An ex vivo study. J Endod. 2015; 41: 2008-13. DOI: https://doi.org/10.1016/j.joen.2015.09.007

Grande NM, Plotino G, Gambarini G, et al. Present and future in the use of Micro-CT scanner 3D analysis for the study of dental and root canal morphology. Ann Ist Super Sanita. 2012; 48: 26-34.

Westenberger P. Avizo – Three-dimensional visualization framework. In: Proceedings of the Geoinformatics 2008 – Data to knowledge, USGS, 2008, 13-4.

Roerdink JBTM, Meijster A. The watershed transform: Definitions, algorithms and parallelization strategies. Fundam Inform. 2000; 41: 18-–2. DOI: https://doi.org/10.3233/FI-2000-411207

Meyer F, Beucher S. Morphological segmentation. J Vis Commun Image Represent. 1990; 1: 21-46 DOI: https://doi.org/10.1016/1047-3203(90)90014-M

Abiodun-Solanke IMF, Dosumu OO, Shaba PO, Ajayi DM. Prevalence of additional canals in maxillary first molars in a Nigerian population. J Contemp Dent Pract. 2008; 9:1-8 DOI: https://doi.org/10.5005/jcdp-9-7-81

Irhaim AA. Evaluation of the root and canal morphology of permanent maxillary first molars cone-beam computed tomography in a sample of patients treated at the Wits Oral Health Centre. Dissertation, University of Witwatersrand, 2016: 1-56

Park JW, Lee JK, Ha BH, Choi JH, Perinpanayagam H. Three-dimensional analysis of maxillary first molar mesiobuccal root canal configuration and curvature using micro-computed tomography. Oral Surg Oral Med Oral Pathol Oral Radiol Endod.

; 108: 43-–42. DOI: 10.1016/j.tripleo.2009.01.022 DOI: https://doi.org/10.1016/j.tripleo.2009.01.022

Somma F, Leoni D, Plotino G, Grande NM, Plasschaert A. Root canal morphology of the mesiobuccal root of maxillary first molars: A micro-computed tomographic analysis. Int Endod J. 2009; 42: 15–-74. DOI: 10.1111/j.1365-2591.2008.01472.x DOI: https://doi.org/10.1111/j.1365-2591.2008.01472.x

Gu Y, Lee JK, Spångberg LSW, et al. Minimum-intensity projection for in-depth morphology study of mesiobuccal roots. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2011; 112: 67-. DOI: https://doi.org/10.1016/j.tripleo.2011.04.036

Verma P, Love RM. A Micro-CT study of the mesiobuccal root canal morphology of the maxillary first molar tooth: Mesiobuccal root canal morphology. Int Endod J. 2011; 44: 20–-7. DOI: 10.1111/j.1365-2591.2010.01800.x DOI: https://doi.org/10.1111/j.1365-2591.2010.01800.x

Yamada M, Ide Y, Matsunaga S, Kato H, Nakagawa KI. Three-dimensional analysis of mesiobuccal root canal of Japanese maxillary first molars using micro-CT. Bull Tokyo Dent Coll 2011; 52: 7-–84. DOI: 10.2209/tdcpublication.52.77 DOI: https://doi.org/10.2209/tdcpublication.52.77

Hosoya N, Yoshida T, Iino F, Arai T, Mishima A, Kobayashi K. Detection of a secondary mesio-buccal canal in maxillary first molars: A comparative study. J RESEARCH www.sada.co.za / SADJ Vol. 79 No.2https://doi.org/10.17159/sadj.v79i02.16864The SADJ is licensed under Creative Commons Licence CC-BY-NC-4.0.< 85Conserv Dent. 2012; 15: 12-–31. DOI: 10.4103/0972-0707.94579 DOI: https://doi.org/10.4103/0972-0707.94579

Domark JD, Hatton JF, Benison RP, Hildebolt CF. Ax ex vivo comparison of digital radiography and cone-beam and micro-computed tomography in the detection of the number of canals in the mesiobuccal roots of maxillary molars. J Endod. 2013; 39: 90-–5. DOI: 10.1016/j.joen.2013.01.010 DOI: https://doi.org/10.1016/j.joen.2013.01.010

Kim Y, Chang S-W, Lee J-K, et al. A micro-computed tomography study of canal configuration of multiple-canalled mesiobuccal roots of maxillary first molars. Clin Oral Invest. 2013; 17: 154-–6. DOI: 10.1007/s00784-012-0852-8 DOI: https://doi.org/10.1007/s00784-012-0852-8

Lee K-W, Kim Y, Perinpanayagam H, et al. Comparison of alternative image reformatting techniques in micro-computed tomography and tooth clearing for detailed canal morphology. J Endod. 2014; 40: 41-–22. DOI: 10.1016/j.joen.2013.09.014 DOI: https://doi.org/10.1016/j.joen.2013.09.014

Zurawski AL, Lambert P, Solda C, Zanesco C, Reston EG, Barletta FB. Mesiolingual canal prevalence in maxillary first molars assessed through different methods. J Contemp Dent Pract. 2018; 19: 959-63 DOI: https://doi.org/10.5005/jp-journals-10024-2365

Alfouzan K, Alfadley A, Alkadi L, Alhezam A, Jamleh A. Detecting the second mesiobuccal canal in maxillary molars in a Saudi Arabian population: A Micro-CT study. Scanning. 2019; 2019: 1-7 DOI: https://doi.org/10.1155/2019/9568307

Camargo Dos Santos B, Pedano MS, Giraldi CK, De Oliveira JCM, Lima ICB, Lambrechts P. Mesiobuccal root canal morphology of maxillary first molars in a Brazilian sub-population: A micro-CT study. Eur Endod J. 2020; 5: 105-11 DOI: https://doi.org/10.14744/eej.2020.29291

Tonelli SQ, Sousa-Neto MD, Leoni GB, et al. Micro-CT evaluation of maxillary first molars: Interorifice distances and internal anatomy of the mesiobuccal root. Braz Oral Res. 2021; 35: 1-8 DOI: https://doi.org/10.1590/1807-3107bor-2021.vol35.0060

Ordinola-Zapata R, Martins JN, Plascencia H, Versiani MA, Bramante CM. The MB3 canal in maxillary molars: A Micro-CT study. Clin Oral Investig. 2020; 24: 410-–1. DOI: https://doi.org/10.1007/s00784-020-03284-7

Rezaeian M, Tonekaboni MR, Iranmanesh F. Evaluating the root canal morphology of permanent maxillary first molars in an Iranian population. Iran Endod J. 2018; 13: 7-–.

Rwenyonyi CM, Kutesa AM, Muwazi LM, Buwembo W. Root and canal morphology of maxillary first and second permanent molar teeth in a Ugandan population. Int Endod J. 2007; 40: 679-83 DOI: https://doi.org/10.1111/j.1365-2591.2007.01265.x

Sert S, Bayirli G. Evaluation of the root canal configurations of the mandibular and maxillary permanent teeth by gender in the Turkish population. J Endod. 2004; 30: 39-–8. DOI: 10.1097/00004770-200406000-00004 DOI: https://doi.org/10.1097/00004770-200406000-00004

Thomas RP, Moule AJ, Bryant R. Root canal morphology of maxillary permanent first molar teeth at various ages. Int Endod J. 1993; 26: 25-–67. DOI: 10.1111/j.1365-2591.1993.tb00570.x DOI: https://doi.org/10.1111/j.1365-2591.1993.tb00570.x

Zheng Q, Wang Y, Zhou X, Wang Q, Zheng G, Huang D. A cone-beam computed tomography study of maxillary first permanent molar root and canal morphology in a Chinese population. J Endod. 2010; 36: 148-–4. DOI: 10.1016/j.joen.2010.06.018 DOI: https://doi.org/10.1016/j.joen.2010.06.018

Razumova S, Brago A, Khaskhanova L, Barakat H, Howijieh A. Evaluation of anatomy and root canal morphology of the maxillary first molar using the cone-beam computed tomography among residents of the Moscow region. Contemp Clin Dent 2018; 9: S133-S1. DOI: https://doi.org/10.4103/ccd.ccd_127_18

Tian X, Yang X, Qian L, Wei B, Gong Y. Analysis of the root and canal morphologies in maxillary first and second molars in a Chinese population using cone-beam computed tomography. J Endod. 2016; 42: 696-701 DOI: https://doi.org/10.1016/j.joen.2016.01.017

Kyaw Moe MM, Jo HJ, Ha JH, Kim SK. Root canal configuration of Burmese (Myanmar) maxillary first molars: A micro-computed tomography study. Int J Dent. 2021; 2021:1-8 DOI: https://doi.org/10.1155/2021/3433343

Matsunaga S, Shimoo Y, Kinoshita H, et al. Morphologic classification of root canals and incidence of accessory canals in maxillary first molar palatal roots: Three dimensional observation and measurements using Micro-CT. J Hard Tissue Biol. 2014; 23: 329-34 DOI: https://doi.org/10.2485/jhtb.23.329

Albuquerque DV, Kottoor J, Dham S, Velmurugan N, Abarajithan M, Sudha R. Endodontic management of maxillary permanent first molar with 6 root canals: 3 case reports. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2010; 110: e7-–83. DOI: 10.1016/j.tripleo.2010.04.017 DOI: https://doi.org/10.1016/j.tripleo.2010.04.017

de Almeida-Gomes F, Maniglia-Ferreira C, De Sousa BC, Dos Santos RA. Six root canals in maxillary first molars. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2009; 108: e157-e159 DOI: https://doi.org/10.1016/j.tripleo.2009.04.032

Karthikeyan K, Mahalaxmi S. New nomenclature for extra canals based on four reported cases of maxillary first molars with six canals. J Endod. 2010; 36: 107-–8. DOI: 10.1016/j.joen.2009.12.001 DOI: https://doi.org/10.1016/j.joen.2009.12.001

Kottoor J, Velmurugan N, Sudha R, Hemamalathi S. Maxillary first molar with seven root canals diagnosed with cone-beam computed tomography scanning: A case report. J Endod. 2010; 36: 915-21 DOI: https://doi.org/10.1016/j.joen.2009.12.015

Martins JN. Endodontic treatment of a maxillary first molar with seven root canals confirmed with cone-beam computer tomography – Case report. J Clin Diagn Res. 2014; 8: 1-3

Kottoor J, Velmurugan N, Surendran S. Endodontic management of a maxillary first molar with eight root canal systems evaluated using cone-beam computed tomography scanning: A case report. J Endod. 2011; 37: 71-–9. DOI: 10.1016/j.joen.2011.01.008 DOI: https://doi.org/10.1016/j.joen.2011.01.008

Ahmed HMA, Neelakantan P, Dummer PMH. A new system for classifying accessory canal morphology. Int Endod J. 2018; 51: 164-76. DOI: https://doi.org/10.1111/iej.12800

Shalabi RMA, Omer JG OE, Jennings M, Claffey NM. Root canal anatomy of maxillary first and second permanent molars. Int Endod J. 2000; 33: 40-–14. DOI: 10.1046/j.1365-2591.2000.00221.x DOI: https://doi.org/10.1046/j.1365-2591.2000.00221.x

Marceliano-Alves M, Alves FRF, Mendes D de M, Provenzano JC. Micro-computed tomography analysis of the root canal morphology of palatal roots of maxillary first molars. J Endod. 2016; 42: 28-–3. DOI: 10.1016/j.joen.2015.10.016 DOI: https://doi.org/10.1016/j.joen.2015.10.016

Divine KA, McClanahan SB, Fok A. Anatomic analysis of palatal roots of maxillary molars using micro-computed tomography. J Endod. 2019; 45: 72-–8. DOI: 10.1016/j.joen.2019.03.007 DOI: https://doi.org/10.1016/j.joen.2019.03.007

Xu T, Fan W, Tay FR, Fan B. Mico–-computed tomographic evaluation of the prevalence, distribution, and morphologic features of accessory canals in Chinese permanent teeth. J Endod. 2019; 45: 99-–9. DOI: 10.1016/j.joen.2019.04.001 DOI: https://doi.org/10.1016/j.joen.2019.04.001

Yamada M, Matsunaga S, Kasahara N, et al. The microscopic structure of the root canal morphology of the distobuccal root of the maxillary first molar in Japanese people: A micro-computed tomography study. J Hard Tissue Biol. 2023; 32: 35-40 DOI: https://doi.org/10.2485/jhtb.32.35

Alavi AM, Opasanon A, Ng YL, Gulabivala K. Root and canal morphology of Thai maxillary molars. Int Endod. J. 2002; 35: 478-85. DOI: https://doi.org/10.1046/j.1365-2591.2002.00511.x

Matsunaga S, Yamada M, Kasahara N, et al. Japanese maxillary first molar root canal morphology: An ultrastructural study using micro-computed tomography. J Hard Tissue Biol. 2022; 31: 109-14 DOI: https://doi.org/10.2485/jhtb.31.109

Haznedaroglu F, Ersev H, Odabasi H, et al. Incidence of patent furcal accessory canals in permanent molars of a Turkish population. Int Endod J. 2003; 36: 515-9 DOI: https://doi.org/10.1046/j.1365-2591.2003.00681.x

Bhuyan AC, Kataki R, Phyllei P, Gill GS. Root canal configuration of permanent maxillary first molars in a Khasi population of Meghalaya: An in vitro study. J Conserv Dent. 2014; 17: 359.63 DOI: https://doi.org/10.4103/0972-0707.136511

Mazzi-Chaves JF, Silva-Sousa YTC, Leoni GB, et al. Micro-computed tomographic assessment of the variability and morphological features of root canal system and their ramifications. J Appl Oral Sci. 2020; 28:1-10 DOI: https://doi.org/10.1590/1678-7757-2019-0393

Gao X, Tay FR, Gutmann JL, Fan W, Xu T, Fan B. Micro-CT evaluation of apical delta morphologies in human teeth. Sci Rep. 2016; 6:1–-6. DOI: 10.1038/srep36501 DOI: https://doi.org/10.1038/srep36501

Karobari MI, Parveen A, Mirza MB, et al. Root and root canal morphology classification systems. Int J Dent. 2021; 2021: 1-6 DOI: https://doi.org/10.1155/2021/6682189

Vertucci FJ. Root canal anatomy of human permanent teeth. Oral Surg Oral Med Oral Pathol 1984; 58: 58-–99. DOI: 10.1016/0030-4220(84)90085-9 DOI: https://doi.org/10.1016/0030-4220(84)90085-9

Ratanajirasut R, Panichuttra A, Panmekiate S. A Cone-beam computed tomographic study of root and canal morphology of maxillary first and second permanent molars in a Thai population. J Endod. 2018; 44: 5-–61. DOI: 10.1016/j.joen.2017.08.020 DOI: https://doi.org/10.1016/j.joen.2017.08.020

Martins JNR, Ordinola-Zapata R, Marques D, Francisco H, Caramês J. Differences in root canal system configuration in human permanent teeth within different age groups. Int Endod J. 2018; 51: 93-–41. DOI: 10.1111/iej.12896 DOI: https://doi.org/10.1111/iej.12896

Buchanan GD, Gamieldien MY, Tredoux S, Vally ZI. Root and canal configurations of axillary premolars in a South African subpopulation using cone-beam computed tomography and two classification systems. J Oral Sci. 2020; 62: 9-–7. DOI: 10.2334/josnusd.19-0160 DOI: https://doi.org/10.2334/josnusd.19-0160

Buchanan GD, Gamieldien MY, Fabris-Rotelli I, Van Schoor A, Uys A. Root and canal morphology of maxillary second molars in a Black South African subpopulation using cone-beam computed tomography and two classifications. Aust Endod J. 2022; 00: -–. DOI: https://doi.org/10.1111/aej.12720

Olczak K, Pawlicka H, Szymanski W. Root form and canal anatomy of maxillary first premolars: A cone-beam computed tomography study. Odontology. 2022; 110: 365-75. DOI: 10.1007/s10266-021-00670. DOI: https://doi.org/10.1007/s10266-021-00670-9

Mirza MB, Gufran K, Alhabib O, et al. CBCT-based study to analyze and classify root canal morphology of maxillary molars: A retrospective study. Eur Rev Med Pharmacol Sci. 2022; 26: 6550-60

Kuzekanani M, Najafipour R. Prevalence and distribution of radix paramolaris in the mandibular first and second molars of an Iranian population. J Int Soc Prev Community Dent. 2018; 8: 240-4 DOI: https://doi.org/10.4103/jispcd.JISPCD_58_18

Cantatore G, Berutti E, Castellucci A. Missed anatomy: Frequency and clinical impact. Endod Topics. 2006; 15: 3-31 DOI: https://doi.org/10.1111/j.1601-1546.2009.00240.x

Rouhani A, Bagherpour A, Akbari M, Azizi M, Nejat A, Naghavi N. Cone-beam computed tomography evaluation of maxillary first and second molars in an Iranian population: A morphological study. Iran Endod J. 2014; 9: 190-4

Pérez-Heredia M, Ferrer-Luque CM, Bravo M, Castelo-Baz P, Ruíz-Piñón M, Baca P. Cone-beam computed tomographic study of root anatomy and canal configuration of molars in a Spanish population. J Endod. 2017; 43: 151-–6. DOI: 10.1016/j.joen.2017.03.026 DOI: https://doi.org/10.1016/j.joen.2017.03.026

Ahmed HMA. A critical analysis of laboratory and clinical research methods to study root and canal anatomy. Int Endod J. 2022; 55: 229-80 DOI: https://doi.org/10.1111/iej.13702

Smadi L, Khraisat A. Detection of a second mesiobuccal canal in the mesiobuccal roots of maxillary first molar teeth. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2007; 103: e7-–e81. DOI: 10.1016/j.tripleo.2006.10.007 DOI: https://doi.org/10.1016/j.tripleo.2006.10.007

Hartwell G, Appelstein CM, Lyons WW, Guzek ME. The incidence of four canals in maxillary first molars: A clinical determination. J Am Dent Assoc. 2007; 138: 134-–6. DOI: 10.14219/jada.archive.2007.0050 DOI: https://doi.org/10.14219/jada.archive.2007.0050

Al-Nazhan S. The prevalence of two root canals in mesial roots of endodontically treated maxillary first molars among a Saudi Arabian sub-population. Saudi Dent J. 2006; 13: 46-52

Kaya-Büyükbayram I, Kartal N. Evaluation of complex mesiobuccal root anatomy in maxillary first molar teeth. Int J Morphol. 2018; 36: 46-–64. DOI: 10.4067/S0717-95022018000200460 DOI: https://doi.org/10.4067/S0717-95022018000200460

Ricucci D, Siqueira Jr. JF. Fate of the tissue in lateral canals and apical ramifications in response to pathologic conditions and treatment procedures. J Endod 2010; 36: -–15. DOI: 10.1016/j.joen.2009.09.038 DOI: https://doi.org/10.1016/j.joen.2009.09.038

De Deus QD. Frequency, location, and direction of the lateral, secondary, and accessory canals. J Endod. 1975; 1: 361-6 DOI: https://doi.org/10.1016/S0099-2399(75)80211-1

Cheung GSP, Yang J, Fan B. Morphometric study of the apical anatomy of C-shaped root canal systems in mandibular second molars. Int Endod J. 2007; 40: 239-46 DOI: https://doi.org/10.1111/j.1365-2591.2007.01193.x

AAE. Glossary of Endodontic Terms. https://www.aae.org/specialty/download/ glossary-of-endodontic-terms/2020: accessed 8 August 20.

Liu N, Li X, Liu N, et al. A micro-computed tomography study of the root canal morphology of the mandibular first premolar in a population from southwestern China. Clin Oral Investig. 2013; 17: 999-1007 DOI: https://doi.org/10.1007/s00784-012-0778-1

Ordinola-Zapata R, Martins JNR, Niemczyk S, Bramante CM. Apical root canal anatomy in the mesiobuccal root of maxillary first molars: Influence of root apical shape and prevalence of apical foramina – a micro-CT study. Int Endod J. 2019; 52: 128–-. DOI: https://doi.org/10.1111/iej.13109

Simon JH, Glick DH, Frank AL. The relationship of endodontic–periodontic lesions. J Periodontol. 1972; 43: 202-8 DOI: https://doi.org/10.1902/jop.1972.43.4.202

Pineda F, Kuttler Y. Mesiodistal and buccolingual roentgenographic investigation of 7,275 root canals. Oral Surg Oral Med Oral Pathol. 1972; 33: 11–-10. DOI: 10.1016/0030-4220(72)90214-9 DOI: https://doi.org/10.1016/0030-4220(72)90214-9

Wolf TG, Wentaschek S, Wierichs RJ, Briseño-Marroquín B. Interradicular root canals in mandibular first molars: A literature review and ex vivo study. J Endod. 2019; 45: 19–-35. DOI: 10.1016/j.joen.2018.10.019 DOI: https://doi.org/10.1016/j.joen.2018.10.019

Dammaschke T, Witt M, Ott K, Schäfer E. Scanning electron microscopic investigation of incidence, location, and size of accessory foramina in primary and permanent molars. Quintessence Int. 2004; 35: 699-705

Weine FS, Healey HJ, Gerstein H, Evanson L. Canal configuration in the mesiobuccal root of the maxillary first molar and its endodontic significance. Oral Surg Oral Med Oral Pathol. 1969; 28: 419-25 DOI: https://doi.org/10.1016/0030-4220(69)90237-0

Kartal N, Cimilli H (Kapkin). The degrees and configurations of mesial canal curvatures of mandibular first molars. J Endod. 1997; 23: 38–-62. DOI: 10.1016/S0099-2399(97)80182-3 DOI: https://doi.org/10.1016/S0099-2399(97)80182-3

Gupta SK, Saxena P. Proposal for a simple and effective diagrammatic representation of root canal configuration for better communication amongst oral radiologists and clinicians. J Oral Biol Craniofac Res. 2016; 6: 0–-6. DOI: 10.1016/j.jobcr.2015.09.005 DOI: https://doi.org/10.1016/j.jobcr.2015.09.005

Ahmed HMA, Dummer PMH. Advantages and applications of a new system for classifying roots and canal systems in research and clinical practice. Eur Endod J. 2018; 3:9–-. DOI: https://doi.org/10.5152/eej.2017.17064

Ahmed HMA, Che Ab Aziz ZA, Azami NH, et al. Application of a new system for classifying root canal morphology in undergraduate teaching and clinical practice: A national survey in Malaysia. Int Endod J. 2020; 53: 871-9 DOI: https://doi.org/10.1111/iej.13271

Downloads

Published

2024-04-14

How to Cite

Root and canal morphology of the maxillary first molar: A micro-computed tomography-focused observation of literature with illustrative cases. Part 2: Internal root morphology. (2024). South African Dental Journal, 79(02), 75-85. https://doi.org/10.17159/sadj.v79i02.16864