Dental Arch Width in Thai Population at Nopparat Rajathanee Hospital


  • Pannamas Santadusit D.D.S., MDSc. กลุ่มงานทันตกรรม โรงพยาบาลนพรัตนราชธานี
  • Busaba Supawattanabodee, Ph.D., B.Sc. ภาควิชาวิทยาการวิจัยและนวัตกรรมทางการแพทย์ คณะแพทยศาสตร์ วชิรพยาบาล


Dental arch width, Intercanine width, Intermolar width, Forensics dentistry


Background : Dental arch width, intercanine width and intermolar width are Important factors for diagnosis and treatment planning in Orthodontics including planning for the stable result in the retention period. These value are also vary to sex and ethic.

Objective : To find the mean value of dental arch width and to compare if there is sex difference with respect to dental arch widths both maxilla and mandible.

Methods : The dental cast of 85 Thai patients (45 females and 40 males) with the mean age of 14.6 years (10-25 years) in the permanent dentition attending the dental department of Nopparat Rajathanee Hospital, Bangkok, were studied. All subjects were Thais with no history of orthodontic treatment. A digital veneer caliper (Mitutoya) was used to measure the intercanine width (ICW) and intermolar width (IMW) on each dental cast. The mean value of dental arch width between both sex were compared by using independent t-test.

Results : Intercanine width in maxillary arch for male and female was 35.42 ± 2.34 mm. and 35.54 ± 2.48 mm. respectively. Intermolar width in maxillary arch for male and female was 51.90 ± 4.46 mm. and 52.57 ± 2.95 mm. respectively. Intercanine width in mandibular arch for male and female was 27.08 ± 1.96 mm. and 27.24 ± 2.26 mm. respectively. Intermolar width in mandibular arch for male and female was 45.02 ± 3.28 mm. and 44.67 ± 2.88 mm. respectively. Male showed the slightly larger intermolar arch width in the mandible . Female showed slightly larger intermolar arch width in the maxilla and slightly larger intercanine arch width in both maxilla and mandible.

Conclusion : There was no statistically significant difference between male and female with respect to intercanine and intermolar arch width.


Download data is not yet available.


Paulino V, Paredes V, Gandia JL, Cibrian R. Prediction of arch length base on intercanine width. Eur J Orthod 2008;30:295-8.

Bishara SE, Bishara SE, Stanley RN. Maxillary expansion: clinical implications. Am J Orthod Dentofacial 1987;91:3-14.

Birdie AR. Morphogenesis of mandibular dental arch shape in human embryos. J Dent Res 1968; 47: 50-8.

Bishara SE, Bayati P, Jakobsen JR. Longitudinal comparison of dental arch changes in normal and untreated class II, division I subjects and their clinical implications. AM J Orthod Dentofacial Orthop 1996; 110:483-9.

Dung TM, Ngoc VTN, Hiep NH, Khoi TD, Xiem VV, Chu-Dinh T, et al. Evaluation of dental arch dimensions in 12 year-old Vietnamese children – A cross- sectional study of 4565 subjects.Sci Rep 2019; 9:3101.

Hussein KW, Rajion ZA, Hassan R, Noor SN. Variations in tooth size and arch dimensions in Malay school children. Aust Orthod J 2009;25:163-8.

Bishara SE, Treder JE, Damon P, Olsen M. Changes in the dental arches and dentition between 25 and 45 years of age. Angle Orthod 1996;66:417-22.

Ling JY, Wong RW. Dental arch widths of Southern Chinese.Angle Orthod 2009;79:54-63.

Moorrees CFA. The dentition of the growing Child. Cambridge,Harvard University Presss; 1959.

FRANS PGM, van Der Linden. Development of the human dentition. Quintessence Publishing; 2013.

Moyers RE, van der Linden FPGM, Riolo ML, McNamara JA Jr.Standards of human occlusal development.Monograph No. 5,Craniofacial Growth Series. Ann Arbor Center for Human Growth and Development; 1976.

Frohlich FG. A longitudinal study of untreated Class II type malocclusions. Trans Eur Orthod Soc 1961;37:139-59.

Knott VB. longitudinal study of dental arch widths at four stages of dentition. Angle Orthod 1972;42:387-94.

DeKock WH. Dental arch depth and width studied longitudinally from 12 years of age to adulthood. Am J Orthod.1972;62:56-66.

Sillman JH. Dimensional changes of the dental arches:longitudinal study from birth to 25 years. Am J Orthod 1964;50:824-42.

Heikinheimo K, Nyström M, Heikinheimo T, Pirttiniemi P, Pirinen S.Dental arch width, overbite, and overjet in a Finnish population with normal occlusion between the ages of 7 and 32 years. Eur J Orthod 2012;34:418-26.

Motoyoshi M, Hirabayashi M, Shimazaki T, Namura S. An experimental study on mandibular expansion:increase in arch width and perimeter. Eur J Orthod 2002;24:125-30.

Germane Y, Lindauer SJ, Rubinstein LK, Reverse JH, Issacson RJ.Increase in arch perimeter due to orthodontic expansion. Am J Orthod Dentofacial Orthop 1991; 100: 421-27.



How to Cite

Santadusit พ, Supawattanabodee บ. Dental Arch Width in Thai Population at Nopparat Rajathanee Hospital. j dept med ser [Internet]. 2021 Jun. 18 [cited 2022 Aug. 14];46(1):170-5. Available from:



Original Article