Document Detail

The impact of extraction vs nonextraction treatment on soft tissue changes in Class I borderline malocclusions.
MedLine Citation:
PMID:  21932939     Owner:  NLM     Status:  Publisher    
Abstract Objective: To obtain through the use of discriminant analysis a relatively bias-free sample of extraction and nonextraction, Class I, equally susceptible to both treatments' malocclusions and to analyze retrospectively the soft tissue changes between the two different treatment groups. Materials and Methods: The cephalometric, model, and demographic data of 215 patients (females and males) fueled a stepwise discriminant analysis that provided the borderline homogenous subsample (30 extraction and 32 nonextraction cases). The pretreatment and postreatment cephalograms of the borderline sample were then subjected to a thorough soft tissue cephalometric analysis. Results: The results indicated that the three variables that played the most important role in the clinician's treatment decision were indicators of lower crowding, soft tissue convexity, and lower incisor protrusion. Significant differences (P < .001) regarding upper and lower lip protrusion, upper lip thickness (P < .05), and the nasiolabial angle (P < .05) occurred. Conclusion: Extraction treatment of Class I borderline malocclusions led to significant soft tissue changes regarding the upper and lower lip position and thickness as well as the nasiolabial angle, whereas the nonextraction treatment resulted in significant upper lip retraction and lower lip protraction.
Dimitrios Konstantonis
Related Documents :
23355629 - Effects of angiotensin receptor blockade (arb) on mortality and cardiovascular outcomes...
23576469 - Predicting early allograft failure and mortality after liver transplantation: the role ...
8510899 - The effect of pars plana vitrectomy and transforming growth factor-beta 2 without epire...
21637119 - How does a varus deformity of the humeral head affect elevation forces and shoulder fun...
23034729 - Final follow-up of the multicentre aneurysm screening study (mass) randomized trial of ...
20658459 - Assessment of anterior chamber inflammation after intravitreal bevacizumab injection in...
24296869 - Ivabradine improves quality of life in subjects with chronic heart failure compared to ...
19240969 - Osteonecrosis of the jaw in patients with multiple myeloma treated with zoledronic acid.
24672099 - Observational study of compliance and continuance rates of raloxifene in the prevention...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-9-20
Journal Detail:
Title:  The Angle orthodontist     Volume:  -     ISSN:  1945-7103     ISO Abbreviation:  -     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-9-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370550     Medline TA:  Angle Orthod     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
a Research Fellow, Department of Orthodontics, School of Dentistry, University of Athens, Athens, Greece, and in Private Practice of Orthodontics, Athens, Greece.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

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

Previous Document:  The effect of quercetin on expression of SOX9 and subsequent release of type II collagen in spheno-o...
Next Document:  Effect of occlusal plane on smile attractiveness.