En-masse retraction of maxillary anterior teeth with the Double J retractor and palatal miniscrews: A case report

Johnny Liaw; Sandra Tai; Greg Huang

doi:10.1016/j.ajodo.2020.11.043

En-masse retraction of maxillary anterior teeth with the Double J retractor and palatal miniscrews: A case report

Am J Orthod Dentofacial Orthop. 2022 Apr;161(4):592-601. doi: 10.1016/j.ajodo.2020.11.043. Epub 2022 Jan 5.

Authors

Johnny Liaw¹, Sandra Tai², Greg Huang³

Affiliations

¹ Department of Orthodontics, National Taiwan University Hospital, Taipei, Taiwan. Electronic address: [email protected].
² Department of Orthodontics, University of British Columbia, Vancouver, Canada.
³ Department of Orthodontics, University of Washington, Seattle, Wash.

PMID: 34996660
DOI: 10.1016/j.ajodo.2020.11.043

Abstract

A double J retractor and palatal miniscrews were applied to retract maxillary anterior teeth without brackets after repeated periodontal flare-ups. The line of action passing through the center of resistance of maxillary anterior teeth and the moment generated by palatal miniscrews via torquing springs successfully controlled the overbite and incisor torque during space closure. In addition to en-masse retraction without brackets, it is also possible to combine this setup with labial fixed appliances or clear aligner treatment.

Publication types

Case Reports

MeSH terms

Humans
Incisor / surgery
Malocclusion, Angle Class II*
Maxilla
Orthodontic Anchorage Procedures*
Overbite* / therapy
Tooth Movement Techniques