Influence of extraction and nonextraction orthodontic treatment in Japanese-Brazilians with class I and class II division 1 malocclusions

Hayasaki, Sandra Márcia; Henriques, José Fernando Castanha; Janson, Guilherme; Freitas, Marcos Roberto de

doi:10.1016/j.ajodo.2003.10.043

Cited by 37 publications

(52 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[29] The absence of significant differences between the changes in both groups could be explained by the small to moderate Class II malocclusion severity. [30]…”

Section: Discussionmentioning

confidence: 99%

Comparison of esthetic outcome after extraction or non-extraction orthodontic treatment in class II division 1 malocclusion patients

Verma¹,

Sharma²,

Tandon

et al. 2013

Contemp Clin Dent

View full text Add to dashboard Cite

Introduction:The extraction of premolars as a practical form of orthodontic therapy has been accepted for many years, but there remains a controversy regarding the effect of premolar extraction to improve esthetics as well as dentoskeletal relationship. The esthetic impact of the soft-tissue profile might play a major role in deciding on premolar extraction or non-extraction treatment, particularly in borderline patients. This cephalometric study was undertaken to compare the post-treatment soft-tissue profiles of successfully managed Class II, Division 1 malocclusions treated with either all first premolar extractions or treatment with a non-extraction therapy.Materials and Methods:The sample consisted of 100 post-pubertal female patients of Class II Division I malocclusion. Group 1, treated with four first premolar extractions, consisted of 50 female patients with a mean age of 14 years 1 month. Group 2, treated without extractions, consisted of 50 patients with a mean age of 13 years 5 months. Pre-treatment and post-treatment lateral cephalometric radiographs were evaluated. The pre-treatment to post-treatment stage comparison and the intergroup comparison of the treatment changes were conducted between extraction and non-extraction groups of Class II malocclusion samples with t-tests.Results:The soft-tissue facial profiles of the extraction and non-extraction samples were the same following active treatment except for a more retruded lower lip and a more pronounced lower labial sulcus in those patients subjected to extraction.Conclusions:The extraction or non-extraction decision, if based on sound diagnostic criteria, seems to have no systematic detrimental effects on the facial profile.

show abstract

“…[29] The absence of significant differences between the changes in both groups could be explained by the small to moderate Class II malocclusion severity. [30]…”

Section: Discussionmentioning

confidence: 99%

Comparison of esthetic outcome after extraction or non-extraction orthodontic treatment in class II division 1 malocclusion patients

Verma¹,

Sharma²,

Tandon

et al. 2013

Contemp Clin Dent

View full text Add to dashboard Cite

show abstract

“…This movement can be consequentto the mechanotherapy. In this study, a slight increase occured in variable Svertical-U6, but the changes were not significantly.This is because a small amount of mesial drifting of the maxillary molar might be allowed, depending on the severity of the anterior discrepancy [13], [14]. This study had statiscally significant differences for the variables Svertikal -U1 and FL-1, this was consequent to greater decreases in these variables because retraction of maxillary incisors and mechanotherapy during orthodontic treatment.…”

Section: Discussionmentioning

confidence: 75%

“…The results of this study indicate that the first premolar tooth extraction does not cause a decrease in the vertical dimension corresponding to that found by the Staggers and the others. [4], [12], [13].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Dento Facial Vertical Dimension in Class II Division 1 Malocclusion after Premolar Extraction

2016

IJSR

View full text Add to dashboard Cite

“…6 Some findings also proved no significant vertical dimension change in the treatment of class I malocclusion with or without retraction. 19 Other studies also reported that extraction of 4 premolars had no specific effect on the vertical dimension compared with non-extraction cases. 20 Likewise, Krirschneck reported that many studies have proved that there were no significant vertical dimensional changes in both extraction and non-extraction cases.…”

Section: Discussionmentioning

confidence: 97%

Evaluation of Lower Anterior Facial Height and Incisors Vertical Dimension after Class II Division 1 Treatment

Sayutia

Latif

2020

ijmsci

View full text Add to dashboard Cite

Introduction: Orthodontic treatment of class II division 1 malocclusion by extracting the maxillary first premolar causes vertical dimensional change is still a matter of debate. The purpose of this research was to determine the vertical changes of the lower anterior facial height and maxillary incisor vertical dimensions in class II division 1 malocclusion after orthodontic treatment with Edgewise technique. Materials and Methods:This study was conducted on the cephalometry of 24 patients before and after orthodontic treatment with inclusion criteria as follows: Angle Class II division 1 malocclusion, aged 18-30 years old. Measurements were taken for the lower anterior facial height (ANS -Me) and maxillary incisor vertical dimensions by performing an Upper Anterior Dental Height (UADH). Data analysis used was the Wilcoxon test for unpaired data. Results: The result of p-value = 0.195 > 0.05 for lower anterior face height showed no significant difference; and p-value = 0.878 > 0.05 for UADH also showed no significant difference. Conclusion: Orthodontic treatment for class II division 1 malocclusion with the removal of two premolars does not change the lower anterior facial height and maxillary incisor vertical dimensions.

show abstract

Influence of extraction and nonextraction orthodontic treatment in Japanese-Brazilians with class I and class II division 1 malocclusions

Cited by 37 publications

References 13 publications

Comparison of esthetic outcome after extraction or non-extraction orthodontic treatment in class II division 1 malocclusion patients

Comparison of esthetic outcome after extraction or non-extraction orthodontic treatment in class II division 1 malocclusion patients

Evaluation of Dento Facial Vertical Dimension in Class II Division 1 Malocclusion after Premolar Extraction

Evaluation of Lower Anterior Facial Height and Incisors Vertical Dimension after Class II Division 1 Treatment

Contact Info

Product

Resources

About