| Chin cup effects using two different force magnitudes in the management of Class III malocclusions. | |
| | |
MedLine Citation:
|
PMID: 20578869 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
OBJECTIVES: To evaluate the dental and skeletal effects of chin cup using two different force magnitudes in the management of Class III malocclusion cases. MATERIALS AND METHODS: Fifty growing patients (26 males and 24 females) with skeletal Class III and mandibular prognathism were selected. The patients were divided into three groups. Patients in group 1 (n = 20) were treated with a chin cup and occlusal bite plane using 600 g of force per side. Patients in group 2 (n = 20) were subjected to the same treatment as in group 1 but using 300 g of force per side. In group 3 (n = 10) no treatment was performed. For all patients, lateral cephalograms were taken before treatment and after 1 year. Cephalograms were traced and analyzed. The collected data were analyzed statistically using one-way analysis of variance and the Tukey test. RESULTS: In the treatment groups, the SNB angle and ramus height decreased significantly. The ANB angle, Wits appraisal, anterior facial height, mandibular plane angle, and retroclination of the mandibular incisors were significantly increased in comparison to the control group. Utilization of either force showed no significant differences, except that the reduction in the ramus height was significantly greater with the use of higher force. CONCLUSIONS: The use of a chin cup improved the maxillomandibular base relationship in growing patients with Class III malocclusion but with little skeletal effect. The utilization of either force had the same effects, except that the higher force had a more pronounced effect in reduction of ramus height. |
| | |
Authors:
|
Yasser L Abdelnaby; Essam A Nassar |
Related Documents
:
|
9633169 - The influence of operator changes on orthodontic treatment times and results in a postg... 17545299 - Elective orthognathic treatment decision making: a survey of patient reasons and experi... 19561579 - Vacuum-formed retainers more effective than hawley retainers. 19686919 - Analysis of 40 cases of intraoral verticosagittal ramus osteotomies to treat dentofacia... 23512979 - Burden of intracranial steno-occlusive lesions on initial computed tomography angiograp... 15264649 - Growth and treatment changes distal to the mandibular first molar: a lateral cephalomet... 20705479 - The long term immunological response of swine after two exposures to a salmon thrombin ... 15930229 - Primary operative versus nonoperative therapy for pediatric empyema: a meta-analysis. 22261539 - New frontiers for stroke prevention in atrial fibrillation. |
Publication Detail:
|
Type: Comparative Study; Journal Article; Randomized Controlled Trial |
Journal Detail:
|
Title: The Angle orthodontist Volume: 80 ISSN: 1945-7103 ISO Abbreviation: Angle Orthod Publication Date: 2010 Sep |
Date Detail:
|
Created Date: 2010-06-28 Completed Date: 2010-09-30 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0370550 Medline TA: Angle Orthod Country: United States |
Other Details:
|
Languages: eng Pagination: 957-62 Citation Subset: D; IM |
Affiliation:
|
Department of Orthodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt. dryasserlotfy@yahoo.com |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Biomechanics Cephalometry / methods Child Dental Arch / pathology Extraoral Traction Appliances* Female Follow-Up Studies Humans Incisor / pathology Male Malocclusion, Angle Class III / therapy* Mandible / pathology Maxilla / pathology Nasal Bone / pathology Orthodontic Appliance Design Prognathism / therapy Sella Turcica / pathology Stress, Mechanical Tooth / pathology Vertical Dimension |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Evidence-based orthodontics.
Next Document: Shear bond strength of brackets bonded with hydrophilic and hydrophobic bond systems under contamina...