Document Detail

A cephalometric study to compare the effects of cervical traction and Andresen therapy in the treatment of Class II division 1 malocclusion. Part 1--Skeletal changes.
MedLine Citation:
PMID:  2310738     Owner:  NLM     Status:  MEDLINE    
Lateral cephalometric radiographs at the beginning of treatment, end of active treatment, and post-treatment of 30 Andresen and 40 cervical traction patients were analysed, and compared with those of a control group of 22 untreated cases. The cervical traction group was divided into a non-extraction group and an extraction of maxillary second molars group. A clinically significant reduction of ANB was achieved, mainly by mandibular changes in the Andresen group and by maxillary changes in the cervical traction groups. Cervical traction was associated with a small distal positioning and anterior downward tipping of the maxilla during treatment. A more favourable sagittal position of the mandible was achieved in the Andresen group compared to the cervical traction groups, particularly the non-extraction group, where a greater transient backward rotation of the mandible occurred during treatment. A significant, but clinically small increase in mandibular body length occurred in Andresen patients compared to the control. However, in both treatment groups this was due to an increase in growth of the vertical ramus. The lower face heights, both anterior and posterior, increased in all groups, with the anterior upper face height also increasing in the cervical traction group.
K Derringer
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  British journal of orthodontics     Volume:  17     ISSN:  0301-228X     ISO Abbreviation:  Br J Orthod     Publication Date:  1990 Feb 
Date Detail:
Created Date:  1990-04-17     Completed Date:  1990-04-17     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0376035     Medline TA:  Br J Orthod     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  33-46     Citation Subset:  D; IM    
Orthodontic Department, Eastman Dental Hospital, London.
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MeSH Terms
Activator Appliances
Extraoral Traction Appliances
Facial Bones / pathology
Malocclusion / therapy*
Malocclusion, Angle Class II / therapy*
Mandible / growth & development*
Maxillofacial Development*
Orthodontics, Corrective / methods*
Outcome and Process Assessment (Health Care) / statistics & numerical data
Vertical Dimension

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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