Beta
197178

Canine angulation and rotation during canine retraction using elastomeric chains with and without a power arm

Article

Last updated: 22 Jan 2023

Subjects

-

Tags

-

Abstract

Background: During canine retraction, orthodontic forces are applied away from the tooth's center of resistance. This introduces canine distal tipping and mesiobuccal rotation. The correction of these unwanted movements will prolong treatment time. Applying the force closer to the center of resistance should decrease this unwanted tooth movement. Objective: Compare the canine angulation and rotation during canine retraction with and without the use of power arm. Materials and Methods: Twenty-four female orthodontic patients (age 19.32± 4.17 years) with dental Class II indicated for bilateral maxillary first premolar extraction and maximum anchorage were included in this study. The canines were retracted with elastomeric chains over 0.016" X 0.022" statinless steel arch wires to reduce friction. The retraction force was 150g. In twelve patients, the canines were retracted using a power arm fixed to the vertical slots of the canine brackets. For the other twelve patients, the elastic chains were attached to the bracket hooks. Results: Before treatment, the canine angulation and rotation was similar for the two groups. The canine angulation was 12.38± 8.27 and 14.5º± 9.41 for the group with the power arm and without, respectively. while canine rotation was 64.74º± 11.65 and 63.12º± 14.88, respectively. Post-retraction, there was no significant difference in the canine angulation or rotation between the groups. Conclusion: Compared to canine retraction with a power arm, conventional canine retraction with elastomeric chains attached to the bracket hook may provide similar control over distal tipping, provided a stiff 0.017" X 0.025" stainless steel arch wire is used.

DOI

10.21608/edj.2021.96357.1790

Keywords

canine retraction, power arm, canine angulation, canine rotation

Authors

First Name

Hend

Last Name

ElSayed

MiddleName

-

Affiliation

Associate Professor, Department of Orthodontics & Pediatric Dentistry, Oral and Dental Research Division, National Research Centre, Giza, Egypt & Adjunct Assistant Professor, Department of Epidemiology & Health Promotion, College of Dentistry, NYU.

Email

hs.hafez@nrc.sci.eg

City

-

Orcid

-

First Name

Reem

Last Name

Alshazly

MiddleName

-

Affiliation

Assistant lecturer, Department of Orthodontics and Dentofacial Orthopedics, Faculty of Oral & Dental Medicine, Future University in Egypt, Cairo, Egypt.

Email

reemhazem24@gmail.com

City

-

Orcid

-

First Name

Amr

Last Name

El Beialy

MiddleName

-

Affiliation

Associate Professor, Department of Orthodontics and Dentofacial Orthopedics, Faculty of Dentistry, Cairo University, Cairo, Egypt.

Email

amrelbeialy@gmail.com

City

-

Orcid

-

First Name

Fouad

Last Name

El Sharaby

MiddleName

-

Affiliation

Associate Professor, Department of Orthodontics and Dentofacial Orthopedics, Faculty of Dentistry, Cairo University, Cairo, Egypt.

Email

fsharaby@dentistry.cu.edu.eg

City

-

Orcid

0000-0002-7266-8806

Volume

67

Article Issue

4

Related Issue

27904

Issue Date

2021-10-01

Receive Date

2021-09-19

Publish Date

2021-10-01

Page Start

2,933

Page End

2,937

Print ISSN

0070-9484

Online ISSN

2090-2360

Link

https://edj.journals.ekb.eg/article_197178.html

Detail API

https://edj.journals.ekb.eg/service?article_code=197178

Order

10

Type

Original Article

Type Code

254

Publication Type

Journal

Publication Title

Egyptian Dental Journal

Publication Link

https://edj.journals.ekb.eg/

MainTitle

-

Details

Type

Article

Created At

22 Jan 2023