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VOLUME 25 , ISSUE 12 ( December, 2024 ) > List of Articles

ORIGINAL RESEARCH

Root-crown Ratio of Maxillary and Mandibular Anterior Permanent Teeth in Yemeni Adults using CBCT

Salah A Alhaidary, Khaled A Al-Haddad, Ghamdan A Al-Harazi, Mohammed H Mashyakhy, Samar S Adlan, Abdulaziz S Abu-Melha

Keywords : Anterior teeth, Cone-beam computed tomography, Crown length, Crown root ratio, Root length, Yemen

Citation Information : Alhaidary SA, Al-Haddad KA, Al-Harazi GA, Mashyakhy MH, Adlan SS, Abu-Melha AS. Root-crown Ratio of Maxillary and Mandibular Anterior Permanent Teeth in Yemeni Adults using CBCT. J Contemp Dent Pract 2024; 25 (12):1118-1126.

DOI: 10.5005/jp-journals-10024-3792

License: CC BY-NC 4.0

Published Online: 05-03-2025

Copyright Statement:  Copyright © 2024; The Author(s).


Abstract

Aim: To assess the root−crown ratio (RCR) of maxillary and mandibular anterior permanent teeth from cone-beam computed tomography (CBCT) acquired from a sample of Yemeni adults. Materials and methods: This was a retrospective radiographic observational cross-sectional study. The study included 233 CBCTs. Root length, crown length, and RCR of all anterior teeth were measured using Ez-3Di software. Factors considered for correlation included gender differences, skeletal classifications (class I, II, and III), overjet (OJ), and overbite (OB). The data were entered and analyzed using the Statistical Package for the Social Sciences software. Significance was set at a value of p < 0.05. Results: Mean RCR of maxillary and mandibular anterior teeth ranged between 1.2 and 1.3 for central incisors, 1.3 and 1.4 for lateral incisors, and 1.5 and 1.6 for canines. The length of roots and crowns was generally greater in males, except for the mean crown length of the left mandibular central incisor. Class III participants exhibited the longest root length for maxillary and mandibular canines, 15.75 and 14.7 mm, respectively, compared with class I and II participants. Participants with increased OJ (>4 mm) showed the lowest root and crown lengths in all canines and lateral incisors while displaying the highest root length in all central incisors. However, no statistically significant variances were observed in root length and the RCR (p > 0.05). Those with a deep bite had the longest roots for maxillary lateral and central incisors and the shortest roots for maxillary canines. In contrast, participants with an open bite displayed the opposite measurements. Conclusions: Gender differences in RCR were insignificant except for the mandibular right central incisor. No significant differences were observed among the three skeletal classes in all study parameters. Furthermore, RCR variations based on OJ and OB were not statistically significant, except for the mandibular left lateral incisor in relation to OB. Clinical significance: Understanding RCR variations supports clinicians in treatment planning, especially in anchorage selection, force application, and predicting treatment outcomes. This knowledge is important for minimizing potential complications and improving treatment effectiveness in various orthodontic cases.

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  1. Abdelkhalik DM, Gomaa DH, Saber HM, et al. Root-crown ratio and root canal configuration of Egyptian primary molars sample using CBCT and clearing technique: An invitro study. Egypt Dent J 2018;64:895–909. DOI: 10.21608/edj.2018.76919.
  2. Stramotas S, Geenty JP, Darendeliler MA, et al. The reliability of crown–root ratio, linear and angular measurements on panoramic radiographs. Clin Orthod Res 2000;3:182–191. DOI: 10.1034/j.1600-0544.2000.030404.x.
  3. Sorensen JA, Martinoff JT. Endodontically treated teeth as abutments. J Prosthet Dent 1985;53:631–636. DOI: 10.1016/0022-3913(85)90008-3.
  4. Agenter MK, Harris EF, Blair RN. Influence of tooth crown size on malocclusion. Am J Orthod Dentofacial Orthop 2009;136:795–804. DOI: 10.1016/j.ajodo.2007.12.030.
  5. Bouwens DG, Cevidanes L, Ludlow JB, et al. Comparison of mesiodistal root angulation with posttreatment panoramic radiographs and cone-beam computed tomography. Am J Orthod Dentofacial Orthop 2011;139:126–132. DOI: 10.1016/j.ajodo.2010.05.016.
  6. Kumar M, Shanavas M, Sidappa A, et al. Cone beam computed tomography – Know its secrets. J Int Oral Health 2015;7:64–68. PMID: 25859112.
  7. Choi SH, Kim JS, Kim CS, et al. Cone-beam computed tomography for the assessment of root–crown ratios of the maxillary and mandibular incisors in a Korean population. Korean J Orthod 2017;47:39–49. DOI: 10.4041/kjod.2017.47.1.39.
  8. Agrawal JM, Agrawal MS, Nanjannawar LG, et al. CBCT in orthodontics: The wave of future. J Contemp Dent Pract 2013;14:153–157. DOI: 10.5005/jp-journals-10024-1291.
  9. Bi S, Guo Z, Zhang X, et al. Anchorage effects of ligation and direct occlusion in orthodontics: A finite element analysis. Comput Methods Programs Biomed 2022;226:107142. DOI: 10.1016/j.cmpb.2022.107142.
  10. Mageet AO. Classification of skeletal and dental malocclusion: Revisited. Stomatol Edu J 2016;3(3−4):205−211. DOI: 10.25241/stomaeduj.2016.3(3-4).art.11.
  11. Zawawi KH, Alsulaimani FF, Al-Dharrab AA, et al. Morphological features of class I, II and III malocclusions of Saudi adolescents. Saudi J Biol Sci 2021;28:3534–3539. DOI: 10.1016/j.sjbs.2021.03.026.
  12. Plaza SP, Reimpell A, Silva J, et al. Relationship between skeletal class II and class III malocclusions with vertical skeletal pattern. Dental Press J Orthod 2019;24:63–72. DOI: 10.1590/2177-6709.24.4.063-072.oar.
  13. Kinaan BK. Overjet and overbite distribution and correlation: A comparative epidemiological English–Iraqi study. Br J Orthod 1986;13:79–86. DOI: 10.1179/bjo.13.2.79.
  14. Coşkun İ, Kaya B. Relationship between alveolar bone thickness, tooth root morphology, and sagittal skeletal pattern: A cone beam computed tomography study. J Orofac Orthop 2019;80(3):144–158. DOI: 10.1007/s00056-019-00175-9.
  15. Durschlag ME. Prediction of root form using crown data: Mandibular left first premolar [Internet]. Loma Linda, CA: Loma Linda University; 2017. Available from: https://scholarsrepository.llu.edu/etd/463/.
  16. Sindi AS, Al Sanabani F, Al-Makramani BM, et al. A radiographic study of the root-to-crown ratio of natural permanent teeth in 81 Saudi adults. Med Sci Monit 2022;28:e936085-1. DOI: 10.12659/MSM.936085.
  17. Haghanifar S, Moudi E, Abbasi S, et al. Root-crown ratio in permanent dentition using panoramic radiography in a selected Iranian population. J Dent 2014;15:173–179. PMID: 25469356.
  18. Othman N, Taib H, Mokhtar N. Root-crown ratios of permanent teeth in Malay patients attending HUSM Dental Clinic. Arch Orofac Sci 2011;6:21–26. Available from: http://aos.usm.my/docs/Vol_6/Issue_1/2126.haslina.et.al.pdf.
  19. Rencz B, Alhaddad B, Remport B, et al. Root-crown ratios of permanent teeth in healthy and young Hungarian, German, and Japanese populations. Orv Hetil 2021;162:1848–1855. DOI: 10.1556/650.2021.32249.
  20. Hölttä P, Nyström M, Evälahti M, et al. Root–crown ratios of permanent teeth in a healthy Finnish population assessed from panoramic radiographs. Eur J Orthod 2004;26:491–497. DOI: 10.1093/ejo/26.5.491.
  21. Yun HJ, Jeong JS, Pang NS, et al. Radiographic assessment of clinical root-crown ratios of permanent teeth in a healthy Korean population. J Adv Prosthodont 2014;6:171–176. DOI: 10.4047/jap.2014.6.3.171.
  22. Sameshima GT, Sinclair PM. Predicting and preventing root resorption: Part I. Diagnostic factors. Am J Orthod Dentofacial Orthop 2001;119:505–510. DOI: 10.1067/mod.2001.113409.
  23. Sameshima GT, Sinclair PM. Predicting and preventing root resorption: Part II. Treatment factors. Am J Orthod Dentofacial Orthop 2001;119:511–515. DOI: 10.1067/mod.2001.113410.
  24. Arriola-Guillén LE, Valera-Montoya IS, Rodríguez-Cárdenas YA, et al. Incisor root length in individuals with and without anterior open bite: A comparative CBCT study. Dental Press J Orthod 2020;25:23e1–23e7. DOI: 10.1590/2177-6709.25.4.23.e1-7.onl.
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