Maxillofacial morphological factors related to acceleration of maxillary growth attributed to facial mask treatment

a structural superimposition study

Takashi S. Kajii, Yui Sakaguchi, Yoshihiko Sawa, Sachio Tamaoki

Research output: Contribution to journalArticle

Abstract

BACKGROUND: Anatomical textbooks mention that the contact between the pterygoid process and the palatine's pyramidal process is not a "suture" but "conjugation.".The aim was to evaluate the maxillofacial morphological factor responding most to the orthopedic force of facial mask treatment, using the structural superimposition analysis. METHODS: Thirty-one girls with Angle Class III malocclusion treated using a facial mask (FM group) and 11 girls with pseudo-Class III malocclusion (pseudo-III group) were examined. Lateral cephalograms at pre- and posttreatment were analyzed to evaluate maxillofacial changes. Cephalometric structural superimposition analysis originating with Björk and Skieller was also performed. RESULTS: In the FM group, a multiple linear regression model showed that maxillary sutural growth was significantly associated with counter-clockwise rotation of the maxilla and treatment changes in the anteroposterior distance from the pterygomaxillary fissure to the maxillary anterior alveolus, not changes in the distance from the nasion to the maxillary anterior alveolus. CONCLUSIONS: Structural superimposition analysis showed that counter-clockwise rotation of the maxilla and changes in the distance from the pterygomaxillary fissure to the maxillary anterior alveolus responded most to the orthopedic force of facial mask treatment. The analysis implicated that the pterygoid fissure-palatine's pyramidal process conjugation responds most to facial mask treatment among maxillofacial sutures and conjugation, and that the difference in the response induces maxillary counter-clockwise rotation.

Original languageEnglish
Number of pages1
JournalProgress in Orthodontics
Volume20
Issue number1
DOIs
Publication statusPublished - Jan 14 2019

Fingerprint

Masks
Maxilla
Growth
Sutures
Orthopedics
Angle Class III Malocclusion
Linear Models
Cephalometry
Textbooks
Malocclusion
Therapeutics

Keywords

  • Facial mask
  • Maxillofacial sutures
  • Orthodontics
  • Orthopedic force
  • Pterygoid fissure–palatine’s pyramidal process conjugation

ASJC Scopus subject areas

  • Orthodontics

Cite this

Maxillofacial morphological factors related to acceleration of maxillary growth attributed to facial mask treatment : a structural superimposition study. / Kajii, Takashi S.; Sakaguchi, Yui; Sawa, Yoshihiko; Tamaoki, Sachio.

In: Progress in Orthodontics, Vol. 20, No. 1, 14.01.2019.

Research output: Contribution to journalArticle

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AU - Tamaoki, Sachio

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