Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Changes in cheek pressure following rapid maxillary expansion

D J Halazonetis1, E Katsavrias, M N Spyropoulos

  • 1Department of Orthodontics, Athens University, Greece.

European Journal of Orthodontics
|August 1, 1994
PubMed
Summary

Rapid maxillary expansion significantly increases cheek pressure on the maxillary arch. This elevated pressure persists during retention, suggesting it may contribute to relapse after orthodontic treatment.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Novel software for quantitative evaluation and graphical representation of masticatory efficiency.

Journal of oral rehabilitation·2013
Same author

Geometric morphometric analysis of craniofacial variation, ontogeny and modularity in a cross-sectional sample of modern humans.

Journal of anatomy·2013
Same author

Pharmacological management of pain during orthodontic treatment: a meta-analysis.

Orthodontics & craniofacial research·2012
Same author

Fluctuating molar asymmetry in relation to environmental radioactivity.

Archives of oral biology·2009
Same author

Cortical bone response adjacent to applied light orthodontic forces in ovariectomized rats.

Journal of musculoskeletal & neuronal interactions·2009
Same author

A cephalometric morphometric study of the sella turcica.

European journal of orthodontics·2007

Area of Science:

  • Orthodontics
  • Dental Biomaterials
  • Craniofacial Biology

Background:

  • Rapid maxillary expansion (RME) is a common orthodontic treatment for maxillary constriction.
  • The role of soft tissue pressures in RME outcomes is not fully understood.
  • Understanding these forces is crucial for long-term treatment stability.

Purpose of the Study:

  • To investigate the impact of RME on buccal (cheek) pressures exerted on the maxillary arch.
  • To quantify changes in buccal pressure before, during, and after RME.
  • To assess soft tissue adaptation to expansion over time.

Main Methods:

  • A sample of 15 patients (median age 12 years) with bilateral maxillary constriction underwent RME using Hyrax or Haas appliances.
  • Buccal pressures were measured at the upper first molars bilaterally.

Related Experiment Videos

  • Measurements were taken pre-expansion, post-expansion, and after 3-4 months of retention.

    • Main Results:

    • Mean buccal pressure increased from approximately 3 g/cm² pre-expansion to 9 g/cm² post-expansion.
    • A pressure increase of approximately 0.6 g/cm² was observed per millimeter of expansion.
    • Buccal pressures remained elevated during the 3-4 month retention period with no significant soft tissue adaptation.

    Conclusions:

    • Cheek pressures significantly increase following rapid maxillary expansion.
    • Elevated buccal pressures persist even after the typical retention period.
    • These sustained pressures may play a role in the relapse observed after RME treatment.