World Journal of Dentistry

Register      Login

VOLUME 14 , ISSUE 12 ( December, 2023 ) > List of Articles


Evaluation of Various Patterns of Arch Forms between Two Different Ethnic Populations: A Comparative Study

Arpita Singh, BS Harsha Raj, George Sam, Nivedita Sahoo, Niharika Pal, Lipsa Bhuyan

Keywords : Arch forms, Bengali, Dental casts, Odia

Citation Information : Singh A, Raj BH, Sam G, Sahoo N, Pal N, Bhuyan L. Evaluation of Various Patterns of Arch Forms between Two Different Ethnic Populations: A Comparative Study. World J Dent 2023; 14 (12):1037-1041.

DOI: 10.5005/jp-journals-10015-2333

License: CC BY-NC 4.0

Published Online: 31-01-2024

Copyright Statement:  Copyright © 2023; The Author(s).


Aim: To evaluate and compare various patterns of arch forms between Odia and Bengali ethnic populations. Materials and methods: A total of 100 Odia and 100 Bengali students between the ages of 18 and 24 years were selected for this study. Both groups comprised of 50 males and 50 females each. The transverse and sagittal measurements of the dental arches were determined on maxillary and mandibular casts. The reference points were determined as a mid-incisal edge on the labial side, canine cusp tips, mesiobuccal cusps of the first molars, and distobuccal cusp tips of the second molars. Data was recorded and statistically analyzed. Results: The males in both groups showed wider arch forms compared to the females. The transverse measurements (L66, L77) and anteroposterior measurements (L61, L71) were statistically nonsignificant. The Odia subjects reported wider arch form compared to the Bengalis. Conclusion: In conclusion, the arch forms of the Bengalis are narrower than those of Odia. The Odia subjects reported wider arch form compared to the Bengalis. Clinical significance: To achieve a stable, functional, and esthetically pleasing occlusion, it is essential to choose an appropriate arch form for treating malocclusion. Clinically, after determining the patient's pretreatment arch form, wider archwires should be chosen from the available variations for Bengali patients.

  1. Nelson SJ, Ash MM. Wheeler's Dental Anatomy, Physiology, and Occlusion, 9th edition. New Delhi: Elsevier; 2014. pp. 282–283.
  2. Irey M, Valiathan A, Krishnaprasad K. Comparison and classification of dental arch forms of Indian and Chinese subjects with normal occlusions. Indian J Dent Res 1998;9(2):47–57. PMID: 10530191.
  3. Little RM. The irregularity index: a quantitative score of mandibular anterior alignment. Am J Orthod 1975;68(5):554–563. DOI: 10.1016/0002-9416(75)90086-x
  4. Raberin M, Laumon B, Martin JL, et al. Dimensions and form of dental arches in subjects with normal occlusions. Am J Orthod Dentofacial Orthop 1993;104(1):67–72. DOI: 10.1016/0889-5406(93)70029-N
  5. McLaughlin RP, Bennett JC. Arch form considerations for stability and esthetics. Rev Esp Orthod 1999;29(3):46–63.
  6. Felton JM, Sinclair PM, Jones DL, et al. A computerized analysis of the shape and stability of mandibular arch form. Am J Orthod Dentofacial Orthop 1987;92(6):478–483. DOI: 10.1016/0889-5406(87)90229-0
  7. Hunter J. The natural history of the human teeth. American library of dental science. Am J Dent Sc 1839;1:1–75.
  8. Jain M, Dhakar N. Arch forms: an overview. Uni Res J Dent 2013;3(1):16–21. DOI: 10.4103/2249-9725.119045
  9. Kook YA, Nojima K, Moon HB, et al. Comparison of arch forms between Korean and North American white populations. Am J Orthod Dentofacial Orthop 2004;126(6):680–686. DOI: 10.1016/j.ajodo.2003.10.038
  10. Omar H, Alhajrasi M, Felemban N, et al. Dental arch dimensions, form and tooth size ratio among a Saudi sample. Saudi Med J 2018;39(1):86–91. DOI: 10.15537/smj.2018.1.21035
  11. Celebi AA, Keklik H, Tan E, et al. Comparison of arch forms between Turkish and North American. Dental Press J Orthod 2016;21(2):51–58. DOI: 10.1590/2177-6709.21.2.051-058.oar
  12. Oliva B, Sferra S, Greco AL, et al. Three-dimensional analysis of dental arch forms in Italian population. Prog Orthod 2018;19(1):34. DOI: 10.1186/s40510-018-0233-1
  13. Alkadhi OH, Almahfouz SF, Tokhtah HA, et al. Dental arch dimensions in Saudi Adults. Int J Dent 2018;2018:2190250. DOI: 10.1155/2018/2190250
  14. Aljayousi M, Al-Khateeb S, Badran S, et al. Maxillary and mandibular dental arch forms in a Jordanian population with normal occlusion. BMC Oral Health 2021;21(1):105. DOI: 10.1186/s12903-021-01461-y
  15. Kusnoto B, Evans CA. Reliability of a 3D surface laser scanner for orthodontic applications. Am J Orthod Dentofacial Orthop 2002;122(4):342–348. DOI: 10.1067/mod.2002.128219
  16. Shrestha RM. Polynomial analysis of dental arch form of Nepalese adult subjects. Orthod J Nepal 2013;3(1):7–13. DOI: 10.3126/ojn.v3i1.9267
  17. Ahmed M, Shaikh A, Fida M. Evaluation of conformity of preformed orthodontic archwires and dental arch form. Dental Press J Orthod 2019;24(1):44–52. DOI: 10.1590/2177-6709.24.1.044-052.oar
  18. Nojima K, McLaughlin RP, Isshiki Y, et al. A comparative study of Caucasian and Japanese mandibular clinical arch forms. Angle Orthod 2001;71(3):195–200. DOI: 10.1043/0003-3219(2001)071<0195:ACSOCA>2.0.CO;2
  19. Sonal NSRM. Comparison of archforms between Indian and Bhutanese populations. J Res Adv Dent 2016;5(1):75–82.
  20. Eröz UB, Ceylan I, Aydemir S. An investigation of mandibular morphology in subjects with different vertical facial growth patterns. Aust Orthod J 2000;16(1):16–22. PMID: 11201956.
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.