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Publishing Language: Chinese | Open Access

Three dimensional measurement study of the correlation between the mandibular Bonwill-Hawley arch form and base bone arch shape in Class Ⅰ malocclusion patients

Yin LIU1, Xue-qi LI1, Yu CHEN2( ), Yang CAO3( )
Department of Stomatology, Nanshan Maternity & Child Healthcare Hospital of Shenzhen, Shenzhen 518000, China
Department of Orthodontics, Stomatological Hospital of Southern Medical University, Guangdong Provincial Stomatological Hospital, Guangzhou 510280, China
Department of Orthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
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Abstract

Objective

To investigate the correlation between mandibular Bonwill - Hawley arch and base bone archshape.

Methods

CBCT and Mimics10.01 software were used to locate and measure the mandibular arch of 32 patients with type Ⅰ malocclusion. The individualized Bonwill-Hawley arch was drawn and the length and width of the arch and base arch were measured, and the data were compared and analyzed by SPSS 16.0 software.

Results

Pearson correlation analysis results showed significant correlation between Bonwill - Hawley arch and base bone arch in both length and width (r＞0.5). Compared with base bone arch, anterior (t = 0.81, P = 0.25) and medium (t = 0.69, P = 0.50) Bonwill - Hawley arch showed no statistical difference in both length and width (P＞0.05), while posterior Bonwill-Hawley arch showed significant statistical difference in length (t = 2.21, P = 0.03) and width (t = 2.42, P = 0.02).

Conclusion

There was significant correlation between Bonwill-Hawley arch and base bone arch in both length and width.

Keywords

ClassⅠmalocclusionBonwill-Hawley archBase bone archEdgewise techniqueCBCT
CLC number: R783.5 Document code: A Article ID: 2096-1456(2017)05-0300-05

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Journal of Prevention and Treatment for Stomatological Diseases
Volume 25 Issue 5,
May 2017
Pages 300-304
DOI: 10.12016/j.issn.2096-1456.2017.05.005

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LIU Y, LI X-q, CHEN Y, et al. Three dimensional measurement study of the correlation between the mandibular Bonwill-Hawley arch form and base bone arch shape in Class Ⅰ malocclusion patients. Journal of Prevention and Treatment for Stomatological Diseases, 2017, 25(5): 300-304. https://doi.org/10.12016/j.issn.2096-1456.2017.05.005

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Received: 07 December 2016
Revised: 07 January 2017
Published: 20 May 2017
© 2017 by Editorial Department of Journal of Prevention and Treatment for Stomatological Diseases

This article is licensed under a Creative Commons Attribution 4.0 International License.