Maxillary protraction and chincap appliance treatment effects and long-term changes in skeletal Class III patients

Ikue Yoshida, Hideshi Ishii, Nobuhito Yamaguchi, Itaru Mizoguchi

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

The purpose of this study was to investigate the orthopedic effects of combined maxillary protraction appliance (MPA) and chincap therapy on growing Japanese girls and the posttreatment changes after growth is complete. To estimate the actual effects of treatment and posttreatment changes, we used a series of templates that had been constructed from semilongitudinal data of Japanese girls with normal occlusion. During treatment, forward movement of the maxilla with counterclockwise rotation, and backward and downward movement of the mandible with clockwise rotation and growth retardation were observed. The forward movement of the maxilla persisted until growth was complete. During the posttreatment period, the mandible maintained its improved position but showed excessive growth, which could be a rebound change. These results indicate that combined MPA and chincap treatment is effective for correcting skeletal Class III malocclusion.

Original languageEnglish
Pages (from-to)543-552
Number of pages10
JournalAngle Orthodontist
Volume69
Issue number6
Publication statusPublished - 1999 Dec 1
Externally publishedYes

Keywords

  • Chincap
  • Long-term effects
  • Maxillary protraction appliance
  • Orthopedic appliance
  • Skeletal Class III

ASJC Scopus subject areas

  • Orthodontics

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