title: Initial results regarding force exertion during rapid maxillary expansion in children.
abstract: OBJECTIVE
  We developed a method to measure the forces occurring during rapid maxillary expansion and carried out the University of Ulm rapid maxillary expansion method, similar to that of Chatellier and Chateau, in ten patients.
  
  
  RESULTS
  The forces occurring on the maxilla increased up to 120 N. There was considerable variation in force level from patient to patient. After "rupture" of the midpalatal suture, the forces decreased. The remaining forces seemed to be the result from stress on soft tissue and bone.
authors.affiliation: University of Ulm, Department of Orthodontics, Oberer Eselsberg, 89081 Ulm, Germany. Dr.Sander@imail.de
authors.forename: Christian
authors.initials: C
authors.lastname: Sander
authors.forename: Stefan
authors.initials: S
authors.lastname: Hüffmeier
authors.forename: Franz Martin
authors.initials: FM
authors.lastname: Sander
authors.forename: Franz Günter
authors.initials: FG
authors.lastname: Sander
mesh_terms: D000293:Adolescent; D001732:Bite Force; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D009967:Orthodontic Appliances; D010155:Palatal Expansion Technique; D005082:Physical Exertion; D013314:Stress, Mechanical