scholarly journals Long-term stability of maxillary anterior alignment in non-extraction cases

2013 ◽  
Vol 18 (3) ◽  
pp. 46-53 ◽  
Author(s):  
Luiz Filiphe Gonçalves Canuto ◽  
Marcos Roberto de Freitas ◽  
Karina Maria Salvatore de Freitas ◽  
Rodrigo Hermont Cançado ◽  
Leniana Santos Neves
Keyword(s):  
Pearson Correlation ◽  
Correlation Coefficients ◽  
Term Stability ◽  
Long Term Stability ◽  
Irregularity Index ◽  
Posttreatment Period ◽  
Fixed Appliances ◽  
Maxillary Incisors ◽  
Dental Cast

OBJECTIVE: The purpose of this retrospective study was to evaluate long-term stability of maxillary incisors alignment in cases submitted to non-extraction orthodontic treatment. METHODS: The sample comprised 23 patients (13 female; 10 male) at a mean initial age of 13.36 years (SD = 1.81 years), treated with fixed appliances. Dental cast measurements were obtained at three different time points (T1 - pretreatment, T2 - posttreatment and T3 - long-term posttreatment). Variables assessed in maxillary arch were Little Irregularity Index, intercanine, interpremolar and intermolar widths, arch length and perimeter. The statistical analysis was performed by one-way ANOVA and Tukey tests when necessary. Pearson' correlation coefficients were used to investigate possible associations between the evaluated variables. RESULTS: There was no significant change in most arch dimension measurements during and after treatment, however, during the long-term posttreatment period, it was observed a significant maxillary incisors crowding relapse. CONCLUSION: The maxillary incisors irregularity increased significantly (1.52 mm) during long-term posttreatment. None of the studied clinical factors demonstrated to be predictive of the maxillary crowding relapse.

scholarly journals Sexual dimorphism in the long-term stability (10 years) of skeletal Class III treatment

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Natalia Tejedor ◽  
Conchita Martín ◽  
José Antonio Alarcón ◽  
María Dolores Oteo-Calatayud ◽  
Juan Carlos Palma-Fernández
Keyword(s):  
Sexual Dimorphism ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Class ◽  
Term Stability ◽  
Long Term Stability ◽  
Fixed Appliances ◽  
Males And Females ◽  
Class Iii Treatment

Abstract Background Class III malocclusion is associated with high sexual dimorphism, especially in individuals older than 13 years of age, with significant differences in growth between males and females during the pubertal and postpubertal stages, and in adulthood. The aim of this research was to examine differences between males and females in long-term stability (10 years) of treatment for skeletal Class III malocclusion. Methods Thirty patients (15 males and 15 females) with skeletal Class III malocclusion, who had been treated with rapid maxillary expansion (RME) combined with face mask protraction followed by fixed appliances, were selected sequentially. Thirty patients (15 males and 15 females) with skeletal Class I and mesofacial patterns treated only with fixed appliances for dental problems served as the control group. Differences between groups and sexes were evaluated using lateral cephalograms taken at the start of treatment (T0), immediately after the end of treatment (T1), and after 10 years (T2). The long-term treatment success rate was calculated. Results Ten years after Class III treatment, overjet and overbite relapse occurred similarly in females (− 0.68 ± 0.7 mm; − 0.38 ± 0.75 mm, respectively) and males (− 1.09 ± 1.47 mm; − 0.64 ± 0.9 mm, respectively); the ANB angle and Wits appraisal became significantly more negative in males (− 1.37 ± 1.06°; − 2.7 ± 2.53 mm) than in females (− 0.18 ± 1.26°; − 0.46 ± 1.94 mm). The success rate was 73.3% in males and 80% in females. Conclusions Significant differences in the long-term stability of Class III treatment outcomes have been found between males and females, with a larger skeletal Class III relapse and lower long-term success rates in males.

scholarly journals Long-term stability of rapid maxillary expansion combined with chincup protraction followed by fixed appliances

2015 ◽  
Vol 85 (2) ◽  
pp. 270-277 ◽  
Author(s):  
Juan Carlos Palma ◽  
Natalia Tejedor-Sanz ◽  
M. Dolores Oteo ◽  
José Antonio Alarcón
Keyword(s):  
Rapid Maxillary Expansion ◽  
Maxillary Expansion ◽  
Term Stability ◽  
Long Term Stability ◽  
Fixed Appliances

scholarly journals Predictors of long-term stability of maxillary dental arch dimensions in patients treated with a transpalatal arch followed by fixed appliances

2015 ◽  
Vol 16 (1) ◽  
Author(s):  
Gaetana Raucci ◽  
Maryam Elyasi ◽  
Camila Pachêco-Pereira ◽  
Vincenzo Grassia ◽  
Fabrizia d’Apuzzo ◽  
...  
Keyword(s):  
Dental Arch ◽  
Term Stability ◽  
Long Term Stability ◽  
Fixed Appliances ◽  
Transpalatal Arch

scholarly journals Long-term stability of early anterior open bite treatment by magnetic and spring-loaded bite blocks

2019 ◽  
Vol 9 ◽  
pp. 44-51
Author(s):  
Umal H. Doshi ◽  
Wasundhara A. Bhad
Keyword(s):  
Repeated Measures ◽  
Pearson Correlation ◽  
Open Bite ◽  
Block Group ◽  
Anterior Open Bite ◽  
Bite Block ◽  
Term Stability ◽  
Long Term Stability ◽  
Skeletal Open Bite

Introduction The purpose of the present study was to evaluate the long-term stability of open bite correction with spring-loaded and magnetic bite blocks. Materials and Methods A total of 14 patients out of the original sample of 20 were evaluated clinically and cephalometrically at post-treatment, post-retention, and 4.2 years after retention. Of 14 patients, eight were from spring-loaded bite block group, while remaining six were from magnetic bite block group. Normality of data was checked with Shapiro–Wilk test and one-way repeated measures analysis of variance was used to compare the values at different time intervals. Pearson correlation analysis was used to examine the correlations between various cephalometric variables. Results Clinically, decrease in overjet and increase in overbite were evident in 12 patients, while two patients showed non- significant decrease in overbite. Skeletal changes in the form of the closure of mandibular plane angle, clockwise rotation of palatal plane, and significant increase in posterior face height were seen. Molar intrusion relapsed in the follow-up period but was compensated by the incisor extrusion. Overall, the success rate of 85.8% was seen. Conclusion Stability of early treatment with active bite blocks is comparable to any other treatment modality for correction of mild-to-moderate skeletal open bite cases. Importance of retention using the passive bite blocks needs further evaluation.

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