The Journal of Contemporary Dental Practice

Register      Login

SEARCH WITHIN CONTENT

FIND ARTICLE

Volume / Issue

Online First

Archive
Related articles

VOLUME 8 , ISSUE 3 ( March, 2007 ) > List of Articles

RESEARCH ARTICLE

Tooth Size and Arch Dimension in Uncrowded Versus Crowded Class I Malocclusions

Maryam Poosti, Tahereh Jalali

Citation Information : Poosti M, Jalali T. Tooth Size and Arch Dimension in Uncrowded Versus Crowded Class I Malocclusions. J Contemp Dent Pract 2007; 8 (3):45-52.

DOI: 10.5005/jcdp-8-3-45

License: CC BY-NC 3.0

Published Online: 00-03-2007

Copyright Statement:  Copyright © 2007; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim

The purpose of this investigation was to examine the extent to which arch dimension or tooth size contributes to dental crowding.

Methods and Materials

Two groups of dental casts were selected. Each group consisted of 30 pairs of dental casts including equal male and female samples. The first group had Class I malocclusions without crowding or spacing. The second group exhibited Class I malocclusions with severe dental crowding (> a 5 mm space deficiency). The following parameters were measured and used to compare the two groups: individual and collective mesiodistal tooth diameters, dental arch length, as well as buccal and lingual dental arch widths in the canine and molar regions. To compare the two groups the Student's t-test with 95% confidence interval was used.

Results

Statistically significant differences in both tooth diameters and transverse arch dimensions were found between the two groups. The crowded group was found to have a significantly smaller maxillary arch width and larger tooth size when compared with the uncrowded group.

Conclusion

The results of this study suggest under equal conditions (a Class I skeletal relationship) tooth size has a greater role in developing dental crowding.

Citation

Poosti M, Jalali T. Tooth Size and Arch Dimension in Uncrowded Versus Crowded Class I Malocclusions. J Contemp Dent Pract 2007 March;(8)3:045-052.


PDF Share
  1. Contemporary Orthodontics. 3rd ed. St. Louis: Mosby; 2000. P.108-110.
  2. Orthodontics Current Principles and Techniques. 3rd ed. St. Louis: Mosby; 2000. P. 395-397, 408.
  3. Handbook of Orthodontics. 3rd ed. Michigan: Yearbook Medical Publisher; 1988. P. 195-200.
  4. The etiology of crowding of the teeth (based an studies of twins and on morphological investigations) and its bearing on orthodontic treatment (expansion or extraction). Tr. European Orthodont Soc 1951;176-91.
  5. Crowding of mandibular incisor. Am J Orthod 1970;58:156-63.
  6. A biometric study of tooth size and dental crowding. Am J Orthod 1981;79:326-35.
  7. Mandibular incisor crowding in completed cases. Am J Orthod 1972;61:374-91.
  8. An examination of dental crowding and its relationship to tooth size and arch dimension. Am J Orthod 1983;83:363-73.
  9. Dental crowding and its relationship to mesiodistal crown diameters and arch dimension. Am J Orthod Dentofac Orthop 1988;94:50-56.
  10. Tooth size and spacing in relation to eruption or impaction of third molars. Am J Orthod Dentofac Orthop 1988;94:57-61.
  11. Mandibular incisor dimensions and crowding. Am J Orthod 1984;86:493-502.
  12. The form of the human dental arch. Angle Orthodontics 1998;68:29-35.
  13. Arch width changes from 6 weeks to 45 years of age. Am J Orthod 1997;111:401-9.
  14. A longitudinal study of arch size and from in untreated adults. Am J Orthod Dentofac Orthop 1997;111:419-27.
  15. Maturation of untreated normal occlusions. Am J Orthod 1983;83:114-23.
  16. Dimensional changes of the dental arches: Longitudinal study from birth to 25 years. Am J Orthod 1961;50:824-41.
  17. Mandibular dental arch form and dimension. Am J Orthod 1974;66:58-71.
  18. Occlusion and arch width in families. Am J Orthod 1980;78:155-63.
  19. The relationship of arch length to alterations in dentalarch width. Am J Orthod Dentofac Orthop 2000;118:184-88.
  20. Correlations between lower incisor crowding and lowerincisor position and lateral cranial face morphology. Am J Orthod Dentofac Orthop 1988;94:231-39.
  21. A new approach in maxillary molar distalization: Intra Oral bodily molar distalization. Am J Orthod Dentofac Orthop 2000;117:39-48.
  22. Dento alveolar and skeletal changes associated with Pendulum appliance. Am J Orthod Dentofac Orthop 2000;117:333-43.
  23. Japanese NiTi coils used to move molar distally. Am J Orthod Dentofac Orthop 1991;99:564-6.
  24. Non extraction treatment. J Clin Orthod 1983;17:396-413.
  25. Tooth width ratios in crowded and non crowded dntitions. Angle Orthod. 2004;74:765-8.
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.