Comparison of maxillary canine retraction with sliding mechanics and a retraction spring: A three-dimensional analysis based on a midpalatal orthodontic implant

Kazuo Hayashi, Jun Uechi, Masaru Murata, Itaru Mizoguchi

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

Abstract

The purpose of this study was to compare maxillary canine retraction with sliding mechanics and a Ricketts canine retraction spring, using a midpalatal orthodontic implant as a measuring reference. Eight patients (three males and five females) were examined. Because maximum posterior anchorage was required in all subjects, osseointegrated midpalatal implants were used. To examine tooth movement, impressions of the maxillary arch were made at each appointment and cast in die stone. A three-dimensional (3D) surface-scanning system using a slit laser beam was used to measure the series of dental casts. The results demonstrated that 3D analysis of tooth movement based on a midpalatal orthodontic implant provided detailed information on canine retraction. The results also suggested that a canine retracting force of 1 N or less was more effective not only for sliding mechanics but also for the retraction spring. However, the sliding mechanics approach was superior to the retraction spring with regard to rotational control.

Original languageEnglish
Pages (from-to)585-589
Number of pages5
JournalEuropean Journal of Orthodontics
Volume26
Issue number6
DOIs
Publication statusPublished - 2004

ASJC Scopus subject areas

  • Orthodontics

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