The Prevalence of Radix Paramolaris and Entomolaris in
Mandibular Molar Teeth: A Retrospective Study

KURT, Mehmet Hakan; GÖKDENİZ, Seyide Tuğçe; eren, hakan; önder, merve; SAMUNAHMETOĞLU, Erçin; ÖZTÜRK, Hilal Peker

doi:10.52037/eads.2022.0004

The Prevalence of Radix Paramolaris and Entomolaris in Mandibular Molar Teeth: A Retrospective Study

Seyide Tuğçe Gökdeniz, (Ankara Üniversitesi Diş Hekimliği Fakültesi DentoMaksillofasiyal Radyoloji Anabilim Dalı, Ankara, Türkiye)

Merve Önder, (Ankara Üniversitesi Diş Hekimliği Fakültesi DentoMaksillofasiyal Radyoloji Anabilim Dalı, Ankara, Türkiye)

Hilal Peker Öztürk, (Sağlık Bilimleri Üniversitesi, Gülhane Diş Hekimliği Fakültesi DentoMaksillofasiyal Radyoloji Anabilim Dalı, Ankara, Türkiye)

Erçin Samunahmetoğlu, (Ankara Üniversitesi Diş Hekimliği Fakültesi DentoMaksillofasiyal Radyoloji Anabilim Dalı, Ankara, Türkiye)

Hakan Eren, (DentoMaksillofasiyal Radyoloji Anabilim Dalı, Çanakkale Onsekiz Mart Üniversitesi Diş Hekimliği Fakültesi, Çanakkale, Türkiye)

Mehmet Hakan Kurt (Ankara Üniversitesi Diş Hekimliği Fakültesi DentoMaksillofasiyal Radyoloji Anabilim Dalı, Ankara, Türkiye)

European annals of dental sciences (Online)

18 0

Yıl: 2022 Cilt: 49 Sayı: 1 Sayfa Aralığı: 15 - 19 Metin Dili: İngilizce DOI: 10.52037/eads.2022.0004 İndeks Tarihi: 25-07-2022

The Prevalence of Radix Paramolaris and Entomolaris in Mandibular Molar Teeth: A Retrospective Study

Öz:

Purpose: This study aims to analyze the frequency of radix paramolaris (RP) and radix entomolaris (RE) in the mandibular őrst and second molars using cone-beam computed tomography (CBCT). Materials & Methods: The CBCT images of 400 patients at the ages of 14 to 66 were included in the study. On the included images, two maxillofacial radiologists simultaneously examined the presence of RP and RE by using axial CBCT cross-sections from the crown down to apical. Results: The prevalence of at least one RE or RP was 9% (36/400). RP was found in 1.25% (n = 20) of the teeth. Of these, two cases were bilateral, and 16 unilaterally occurred. RE was detected in 2.38% (n = 38) of the teeth, with 11 bilateral and 16 unilateral cases. The prevalence of at least one RE or RP was 10.7% (16/149) for males and 8% (20/251) for females. No statistical sex-related and side-related difference (p > 0.05 ) was detected for the prevalence of RP and RE. Conclusion: The study conőrms a 9% prevalence of at least one root variation (RP or RE) in permanent mandibular molars in a Turkish subpopulation. Clinicians need to be aware of such anatomical variations in the number of roots since they can complicate root canal treatments and tooth extractions

Anahtar Kelime:

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

1. Fava LR. Root canal treatment in an unusual maxillary őrst molar: a case report. Int Endod J. 2001;34(8):649ś653. doi:10.1046/j.1365-2591.2001.00445.x.
2. Rahimi S, Shahi S, Lotő M, Zand V, Abdolrahimi M, Es’haghi R. Root canal conőguration and the prevalence of C-shaped canals in mandibular second molars in an Iranian population. J Oral Sci. 2008;50(1):9ś13. doi:10.2334/josnusd.50.9.
3. Slowey RR. Radiographic aids in the detection of extra root canals. Oral Surg Oral Med Oral Pathol. 1974;37(5):762ś772. doi:10.1016/0030-4220(74)90142-x.
4. Vertucci FJ, Haddix JE. In: Tooth morphology and access cavity preparation. Elsevier; 2011. p. 136ś222.
5. Barker BC, Parsons KC, Mills PR, Williams GL. Anatomy of root canals. III. Permanent mandibular molars. Aust Dent J. 1974;19(6):408ś413. doi:10.1111/j.1834-7819.1974.tb02372.x.
6. Vertucci FJ. Root canal anatomy of the human permanent teeth. Oral Surg Oral Med Oral Pathol. 1984;58(5):589ś599. doi:10.1016/0030-4220(84)90085-9.
7. Nagaven NB, Umashankara KV. Radix entomolaris and paramo- laris in children: a review of the literature. J Indian Soc Pedod Prev Dent. 2012;30(2):94ś102. doi:10.4103/0970-4388.99978.
8. Tu MG, Huang HL, Hsue SS, Hsu JT, Chen SY, Jou MJ, et al. Detection of permanent three-rooted mandibular őrst molars by cone-beam computed tomography imaging in Taiwanese individuals. J Endod. 2009;35(4):503ś507. doi:10.1016/j.joen.2008.12.013.
9. Kottoor J, Albuquerque DV, Velmurugan N, Sumitha M. Four- rooted mandibular őrst molar with an unusual developmental root fusion line: a case report. Case Rep Dent. 2012;2012:237ś 302. doi:10.1155/2012/237302.
10. Rajasekhara S, Sharath Chandra S, Parthasarathy LB. Cone beam computed tomography evaluation and endodontic man- agement of permanent mandibular second molar with four roots: A rare case report and literature review. J Conserv Dent. 2014;17(4):385ś388. doi:10.4103/0972-0707.136518.
11. Stuart C, Pharoah M. Oral Radiology: Principles and Interpre- tation. St. Louis, MO: Mosby [Generic]. Elsevier; 2009.
12. Gupta A, Duhan J, Wadhwa J. Prevalence of three rooted permanent mandibular őrst molars in Haryana (North Indian) population. Contemp Clin Dent. 2017;8(1):38. doi:https://10.4103/ccd.ccd_699_16.
13. Rahimi S, Mokhtari H, Ranjkesh B, Johari M, Reyhani MF, Shahi S, et al. Prevalence of extra roots in permanent mandibular őrst molars in Iranian population: a CBCT analysis. Iran Endod J. 2017;12(1):70. doi:10.22037/iej.2017.14.
14. Miloglu O, Arslan H, Barutcigil C, Cantekin K. Evaluating root and canal conőguration of mandibular őrst molars with cone beam computed tomography in a Turkish population. J Dent Sci. 2013;8(1):80ś86. doi:10.1016/j.jds.2012.09.002.
15. Shemesh A, Levin A, Katzenell V, Ben Itzhak J, Levinson O, Zini A, et al. Prevalence of 3- and 4-rooted őrst and second mandibu- lar molars in the Israeli population. J Endod. 2015;41(3):338ś 342. doi:10.1016/j.joen.2014.11.006.
16. Felsypremila G, Vinothkumar TS, Kandaswamy D. Anatomic symmetry of root and root canal morphology of posterior teeth in Indian subpopulation using cone beam computed tomog- raphy: A retrospective study. Eur J Dent. 2015;9(4):500ś507. doi:10.4103/1305-7456.172623.
17. Walker RT. Root form and canal anatomy of mandibular őrst molars in a southern Chinese population. Endod Dent Trauma- tol. 1988;4(1):19ś22. doi:10.1111/j.1600-9657.1988.tb00287.x.
18. Tu MG, Tsai CC, Jou MJ, Chen WL, Chang YF, Chen SY, et al. Prevalence of three-rooted mandibular őrst molars among Taiwanese individuals. J Endod. 2007;33(10):1163ś1166. doi:10.1016/j.joen.2007.07.020.
19. Kuzekanani M, Najaőpour R. Prevalence and distribution of radix paramolaris in the mandibular őrst and second molars of an Iranian Population. J Int Soc Prev Community Dent. 2018;8(3):240. doi:10.4103/jispcd.JISPCD_58_18.
20. Agarwal M, Trivedi H, Mathur M, Goel D, Mittal S. The radix entomolaris and radix paramolaris: An endodontic challenge. J Contemp Dent Pract. 2014;15(4):496ś499. doi:10.5005/jp- journals-10024-1568.
21. Carlsen O, Alexandersen V. Radix paramolaris in perma- nent mandibular molars: identiőcation and morphology. Scand J Dent Res. 1991;99(3):189ś195. doi:10.1111/j.1600- 0722.1991.tb01884.x.
22. Calberson FL, De Moor RJ, Deroose CA. The radix entomolaris and paramolaris: clinical approach in endodontics. J Endod. 2007;33(1):58ś63. doi:10.1016/j.joen.2006.05.007.
23. Ahmetoğlu F, Altun O, Şimşek N, DEDEOĞLU N. Türkiye’nin doğu bölgesi nüfusundaki mandibular molar dişlerin kök ve kanal yapılarının konik ışınlı bilgisayarlı tomograő ile değerlendirilmesi. Cumhuriyet Dent J. 2014;17(3):223ś234. doi:10.7126/cdj.58140.1008002412.
24. Demirbuga S, Sekerci AE, Dinçer AN, Cayabatmaz M, Zorba YO. Use of cone-beam computed tomography to evaluate root and canal morphology of mandibular őrst and second mo- lars in Turkish individuals. Med Oral Patol Oral Cir Bucal. 2013;18(4):e737ś744. doi:10.4317/medoral.18473.
25. Loh HS. Incidence and features of three-rooted perma- nent mandibular molars. Aust Dent J. 1990;35(5):434ś437. doi:10.1111/j.1834-7819.1990.tb05426.x.
26. Omer OE, Al Shalabi RM, Jennings M, Glennon J, Claffey NM. A comparison between clearing and radiographic techniques in the study of the root-canal anatomy of maxillary őrst and sec- ond molars. Int Endod J. 2004;37(5):291ś296. doi:10.1111/j.0143- 2885.2004.00731.x.
27. Cotton TP, Geisler TM, Holden DT, Schwartz SA, Schindler WG. Endodontic applications of cone-beam volumetric tomography. J Endod. 2007;33(9):1121ś1132. doi:10.1016/j.joen.2007.06.011.
28. Souza-Flamini LE, Leoni GB, Chaves JF, Versiani MA, Cruz- Filho AM, Pécora JD, et al. The radix entomolaris and paramolaris: a micro-computed tomographic study of 3-rooted mandibular őrst molars. J Endod. 2014;40(10):1616ś1621. doi:10.1016/j.joen.2014.03.012.
29. Steelman R. Incidence of an accessory distal root on mandibular őrst permanent molars in Hispanic children. ASDC J Dent Child. 1986;53(2):122ś123.
30. Yew SC, Chan K. A retrospective study of endodontically treated mandibular őrst molars in a Chinese population. J Endod. 1993;19(9):471ś473. doi:10.1016/s0099-2399(06)80536-4.
31. Suyambukesan S, Perumal GCL, Luar JB. Radiographic De- tection of Additional Root on Mandibular Molars in Malaysian Population - A Prevalence Study. Conference Proceedings. 2013.
32. De Moor RJ, Deroose CA, Calberson FL. The radix entomolaris in mandibular őrst molars: an endodontic challenge. Int Endod J. 2004;37(11):789ś799. doi:10.1111/j.1365-2591.2004.00870.x.
33. Martins JNR, Marques D, Mata A, Caramês J. Root and root canal morphology of the permanent dentition in a Caucasian population: a cone-beam computed tomography study. Int Endod J. 2017;50(11):1013ś1026. doi:10.1111/iej.12724.
34. Sperber GH, Moreau JL. Study of the number of roots and canals in Senegalese őrst permanent mandibular molars. Int Endod J. 1998;31(2):117ś122. doi:10.1046/j.1365-2591.1998.00126.x.
35. Różyło TK, Piskórz MJ, Różyło-Kalinowska IK. Radiographic appearance and clinical implications of the presence of radix entomolaris and radix paramolaris. Folia Morphol (Warsz). 2014;73(4):449ś54. doi:10.5603/fm.2014.0067.
36. Gulabivala K, Aung TH, Alavi A, Ng YL. Root and canal morphology of Burmese mandibular molars. Int Endod J. 2001;34(5):359ś370. doi:10.1046/j.1365-2591.2001.00399.x.

APA	GÖKDENİZ S, önder m, ÖZTÜRK H, SAMUNAHMETOĞLU E, eren h, KURT M (2022). The Prevalence of Radix Paramolaris and Entomolaris in Mandibular Molar Teeth: A Retrospective Study. , 15 - 19. 10.52037/eads.2022.0004
Chicago	GÖKDENİZ Seyide Tuğçe,önder merve,ÖZTÜRK Hilal Peker,SAMUNAHMETOĞLU Erçin,eren hakan,KURT Mehmet Hakan The Prevalence of Radix Paramolaris and Entomolaris in Mandibular Molar Teeth: A Retrospective Study. (2022): 15 - 19. 10.52037/eads.2022.0004
MLA	GÖKDENİZ Seyide Tuğçe,önder merve,ÖZTÜRK Hilal Peker,SAMUNAHMETOĞLU Erçin,eren hakan,KURT Mehmet Hakan The Prevalence of Radix Paramolaris and Entomolaris in Mandibular Molar Teeth: A Retrospective Study. , 2022, ss.15 - 19. 10.52037/eads.2022.0004
AMA	GÖKDENİZ S,önder m,ÖZTÜRK H,SAMUNAHMETOĞLU E,eren h,KURT M The Prevalence of Radix Paramolaris and Entomolaris in Mandibular Molar Teeth: A Retrospective Study. . 2022; 15 - 19. 10.52037/eads.2022.0004
Vancouver	GÖKDENİZ S,önder m,ÖZTÜRK H,SAMUNAHMETOĞLU E,eren h,KURT M The Prevalence of Radix Paramolaris and Entomolaris in Mandibular Molar Teeth: A Retrospective Study. . 2022; 15 - 19. 10.52037/eads.2022.0004
IEEE	GÖKDENİZ S,önder m,ÖZTÜRK H,SAMUNAHMETOĞLU E,eren h,KURT M "The Prevalence of Radix Paramolaris and Entomolaris in Mandibular Molar Teeth: A Retrospective Study." , ss.15 - 19, 2022. 10.52037/eads.2022.0004
ISNAD	GÖKDENİZ, Seyide Tuğçe vd. "The Prevalence of Radix Paramolaris and Entomolaris in Mandibular Molar Teeth: A Retrospective Study". (2022), 15-19. https://doi.org/10.52037/eads.2022.0004

APA	GÖKDENİZ S, önder m, ÖZTÜRK H, SAMUNAHMETOĞLU E, eren h, KURT M (2022). The Prevalence of Radix Paramolaris and Entomolaris in Mandibular Molar Teeth: A Retrospective Study. European annals of dental sciences (Online), 49(1), 15 - 19. 10.52037/eads.2022.0004
Chicago	GÖKDENİZ Seyide Tuğçe,önder merve,ÖZTÜRK Hilal Peker,SAMUNAHMETOĞLU Erçin,eren hakan,KURT Mehmet Hakan The Prevalence of Radix Paramolaris and Entomolaris in Mandibular Molar Teeth: A Retrospective Study. European annals of dental sciences (Online) 49, no.1 (2022): 15 - 19. 10.52037/eads.2022.0004
MLA	GÖKDENİZ Seyide Tuğçe,önder merve,ÖZTÜRK Hilal Peker,SAMUNAHMETOĞLU Erçin,eren hakan,KURT Mehmet Hakan The Prevalence of Radix Paramolaris and Entomolaris in Mandibular Molar Teeth: A Retrospective Study. European annals of dental sciences (Online), vol.49, no.1, 2022, ss.15 - 19. 10.52037/eads.2022.0004
AMA	GÖKDENİZ S,önder m,ÖZTÜRK H,SAMUNAHMETOĞLU E,eren h,KURT M The Prevalence of Radix Paramolaris and Entomolaris in Mandibular Molar Teeth: A Retrospective Study. European annals of dental sciences (Online). 2022; 49(1): 15 - 19. 10.52037/eads.2022.0004
Vancouver	GÖKDENİZ S,önder m,ÖZTÜRK H,SAMUNAHMETOĞLU E,eren h,KURT M The Prevalence of Radix Paramolaris and Entomolaris in Mandibular Molar Teeth: A Retrospective Study. European annals of dental sciences (Online). 2022; 49(1): 15 - 19. 10.52037/eads.2022.0004
IEEE	GÖKDENİZ S,önder m,ÖZTÜRK H,SAMUNAHMETOĞLU E,eren h,KURT M "The Prevalence of Radix Paramolaris and Entomolaris in Mandibular Molar Teeth: A Retrospective Study." European annals of dental sciences (Online), 49, ss.15 - 19, 2022. 10.52037/eads.2022.0004
ISNAD	GÖKDENİZ, Seyide Tuğçe vd. "The Prevalence of Radix Paramolaris and Entomolaris in Mandibular Molar Teeth: A Retrospective Study". European annals of dental sciences (Online) 49/1 (2022), 15-19. https://doi.org/10.52037/eads.2022.0004