| Changes in occlusal relationships in mixed dentition patients treated with rapid maxillary expansion. | |
| | |
MedLine Citation:
|
PMID: 19905846 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
ABSTRACT Objective: To prospectively measure occlusal changes in mixed dentition patients who underwent a standardized early expansion protocol. Materials and Methods: The treatment sample consisted of 500 patients who were assigned to three groups according to molar relationship: Class I (n = 204), end-to-end (n = 166), and Class II (n = 130). All patients were treated with a bonded rapid maxillary expander (RME) followed by a removable maintenance plate and a transpalatal arch. Mean age at the start of treatment was 8.8 years (T(1)), with a pre-phase 2 treatment cephalogram (T(2)) taken 3.7 years later. The control sample consisted of the cephalometric records of 188 untreated subjects (Class 1, n = 79; end-to-end, n = 51; Class II, n = 58). Results: The largest change in molar relationship was noted when the Class II treatment group (1.8 mm) was compared with the matched control group (0.3 mm). A positive change was seen in 81% of the Class II treatment group, with almost half of the group improving by >/=2.0 mm. The end-to-end treatment group had a positive change of 1.4 mm, compared with a control value of 0.6 mm, and the Class I group of about 1 mm compared with controls, who remained unchanged (0.1 mm). Skeletal changes were not significant when any of the groups were compared with controls. Conclusion: The expansion protocol had a significantly favorable effect on the sagittal occlusal relationships of Class II, end-to-end, and Class I patients treated in the early mixed dentition. |
| | |
Authors:
|
James A McNamara; Lauren M Sigler; Lorenzo Franchi; Susan S Guest; Tiziano Baccetti |
Related Documents
:
|
17605486 - Treatment and posttreatment effects of quad-helix/crib therapy of dentoskeletal open bite. 20500076 - Objective three-dimensional assessment of lip form in patients with repaired cleft lip. 1877546 - The nature of class ii relapse after herbst appliance treatment: a cephalometric long-t... 19641766 - Response of maxillary retrusion cases to face mask treatment. 12818266 - Effects of 6-12 months of esomeprazole treatment on the gastric mucosa. 19723396 - The incidence of pulmonary non-tuberculous mycobacteria in british columbia, canada. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: The Angle orthodontist Volume: 80 ISSN: 0003-3219 ISO Abbreviation: Angle Orthod Publication Date: 2010 Mar |
Date Detail:
|
Created Date: 2009-11-12 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0370550 Medline TA: Angle Orthod Country: United States |
Other Details:
|
Languages: eng Pagination: 230-8 Citation Subset: D; IM |
Affiliation:
|
a Thomas M. and Doris Graber Endowed Professor of Dentistry, Department of Orthodontics and Pediatric Dentistry, School of Dentistry; Professor of Cell and Developmental Biology, School of Medicine; and Research Professor, Center for Human Growth and Development, The University of Michigan, Ann Arbor, Mich. Private practice of orthodontics, Ann Arbor, Michigan. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Laterality of Asymmetry in Movements of the Corners of the Mouth during Voluntary Smile.
Next Document: Initial Forces and Moments Delivered by Removable Thermoplastic Appliances during Rotation of an Upp...