scholarly journals Comparison of direct skeletally anchorage distalization and two premolar extractions for Class II treatment

2021 ◽  
Author(s):  
Thales Lippi Ciantelli
Keyword(s):  
Class Ii ◽  
Class Ii Treatment

scholarly journals Does daily wear time of Twin Block reliably predict its efficiency of class II treatment?

2021 ◽  
Author(s):  
Michal Sarul ◽  
Marek Nahajowski ◽  
Grzegorz Gawin ◽  
Joanna Antoszewska-Smith
Keyword(s):  
Statistical Significance ◽  
Characteristic Curve ◽  
Class Ii ◽  
Class I ◽  
Rank Test ◽  
Treatment Efficiency ◽  
Significance Level ◽  
Twin Block ◽  
Wear Time ◽  
Class Ii Treatment

Abstract Purpose The objective of this study was to investigate how daily wear time (DWT) influences class II malocclusion treatment efficiency. Materials and methods The study group consisted of 55 patients (mean age 10.4 years) diagnosed with a class II/1 malocclusion. Twin block appliances, with built-in Theramon® microsensors (MC Technology, Hargelsberg, Austria) to monitor patients’ cooperation (daily wear time assessment), were used for treatment. Cephalograms were taken and the following initial and final measurements were compared: Co-Gn, Co-Go, Co-Olp, Pg-Olp, WITS, SNA, SNB, ANB, Co-Go-Me, overjet, molar and canine relationships. The Shapiro–Wilk test, Wilcoxon signed-rank test, Student’s t-test, Levene’s test, Mann–Whitney U test, Kruskal–Wallis test, χ2 test, and Spearman’s rank correlation coefficient with p < 0.05 set as the statistical significance level were used to determine the correlation of the outcomes with DWT; a ROC (receiver operating characteristic) curve was calculated to illustrate diagnostic ability of the binary classifier system. Results DWT was very highly positively correlated with change of the Pg-Olp parameter and highly with an improvement in the ANB, SNA, and SNB angles, an increase in the WITS parameter and an increase in Co-Gn distance. DWTs < 7.5 h correlated with significantly less improvement of the investigated variables. However, DWT > 7.5 h did not significantly correlate with the improvement of the overjet and most of the linear parameters in the mandible. The ROC curve and its AUC (area under curve) allowed the determination of a DWT of 7 h and 48 min to be capable of establishing a class I relationship with 83% probability. Conclusions Class II treatment efficiency was influenced by DWT; an 8 h threshold value had an 83% probability of establishing a class I relationship.

Teeth angulations after class II treatment with the Jones Jig followed by fixed appliances: A retrospective panoramic analysis

2020 ◽  
Vol 18 (3) ◽  
pp. 436-442
Author(s):  
Silvio Augusto Bellini-Pereira ◽  
Gabriel Querobim Sant’Anna ◽  
Maria Claudia Wagner ◽  
Aron Aliaga-DelCastillo ◽  
Mayara Paim Patel ◽  
...  
Keyword(s):  
Class Ii ◽  
Class Ii Treatment ◽  
Panoramic Analysis ◽  
Fixed Appliances

A strategy for nonextraction class II treatment

1998 ◽  
Vol 4 (1) ◽  
pp. 26-32 ◽  
Author(s):  
Anthony A. Gianelly
Keyword(s):  
Class Ii ◽  
Class Ii Treatment

scholarly journals Esthetic perception of facial profile changes after extraction and nonextraction Class II treatment

2020 ◽  
Vol 34 ◽  
Author(s):  
Andréa Damasceno ROCHA ◽  
Cleomária Evelyn Vieira Freire CASTELUCI ◽  
Fernando Pedrin Carvalho FERREIRA ◽  
Ana Claudia CONTI ◽  
Marcio Rodrigues ALMEIDA ◽  
...  
Keyword(s):  
Class Ii ◽  
Facial Profile ◽  
Class Ii Treatment ◽  
Profile Changes

scholarly journals Orthodontic Protocol Using Mini-Implant for Class II Treatment in Patient with Special Needs

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Fernando Pedrin Carvalho Ferreira ◽  
Anderson Paulo Barbosa Lima ◽  
Eliana de Cássia Molina de Paula ◽  
Ana Claudia de Castro Ferreira Conti ◽  
Danilo Pinelli Valarelli ◽  
...  
Keyword(s):  
Special Needs ◽  
Root Resorption ◽  
Low Cost ◽  
Treatment Success ◽  
Class Ii ◽  
Congenital Nystagmus ◽  
Severe Scoliosis ◽  
Class Ii Treatment ◽  
Dental Esthetics ◽  
Materials Used

Improving facial and dental appearance and social interaction are the main factors for special needs (SN) patients to seek orthodontic treatment. The cooperation of SN patients and their parents is crucial for treatment success.Objective. To show through a case report the satisfactory results, both functional and esthetic, in patients with intellectual disability, congenital nystagmus, and severe scoliosis.Materials Used. Pendulum device with mini-implants as anchorage unit.Results. Improvement of facial and dental esthetics, correction of Class II malocclusion, and no root resorption shown in the radiographic follow-up.Conclusion. Knowing the limitations of SN patients, having a trained team, motivating and counting on the cooperation of parents and patients, and employing quick and low-cost orthodontic therapy have been shown to be the essential factors for treatment success.

Class II treatment in early mixed dentition with the eruption guidance appliance: effects and long-term stability

2019 ◽  
Vol 42 (2) ◽  
pp. 151-156 ◽  
Author(s):  
Katri Keski-Nisula ◽  
Leo Keski-Nisula ◽  
Juha Varrela
Keyword(s):  
Treatment Group ◽  
Class Ii ◽  
Post Treatment ◽  
Mixed Dentition ◽  
Term Stability ◽  
Long Term Stability ◽  
Class Ii Treatment ◽  
Significant Correction ◽  
The Mean

Summary Objectives Our aim was to analyse dentoskeletal effects and long-term stability of Class II treatment carried out with an eruption guidance appliance (EGA) in early mixed dentition. Materials and methods Sixty-five Class II patients (38 females and 27 males), treated with an EGA in early mixed dentition, were compared with 58 children (26 females and 32 males) with untreated Class II malocclusion. The mean age in the treatment group at the start (T1) and end of treatment (T2) was 5.4 years (±0.4) and 8.5 years (±0.9), respectively, and at the final examination in the early permanent dentition (T3) 16.7 years (±0.4). In the control group, the mean age at T1 and T2 were 5.1 years (±0.5) and 8.4 years (±0.5), respectively. The independent and dependent sample t-tests, Chi-square test, and Fisher’s test were used in the statistical evaluation. Results In the treatment group, the frequency of Class II decreased from 100 to 14% during the treatment (T1–T2) and a significant correction took place in all occlusal variables. At T2, the treatment and control groups showed statistically significant differences (P &lt; 0.05) in all occlusal variables. In the treated children, mandibular length increased 5 mm more (P &lt; 0.001) from T1 to T2 compared to the control children, and the ANB angle became significantly smaller (P = 0.006). During the post-treatment period (T2–T3), the frequency of Class II in the treatment group decreased from 14 to 2% (P &lt; 0.05), overbite increased from 2.2 to 3.1 mm (P &lt; 0.05), and lower crowding increased from 2to 14% (P &lt; 0.05). Post-treatment changes in overjet and upper crowding were not statistically significant. At T3, the mean values of the SNA, SNB, and ANB angles were 83.0° (SD 3.9°), 81.3° (SD 3.8°), and 2.4° (SD 1.5°), respectively. Conclusions A clinically significant correction of the molar relationship, overjet, overbite, incisor alignment, and growth enhancement of the mandible were observed after treatment in early mixed dentition. The treatment results remained largely stable in the early permanent dentition. However, an increase was observed in overbite and lower crowding. None of the children treated in early mixed dentition needed a second treatment phase.

scholarly journals Early Class II treatment

2017 ◽  
Vol 62 ◽  
pp. 4-10
Author(s):  
CA Brierley ◽  
A DiBiase ◽  
PJ Sandler
Keyword(s):  
Class Ii ◽  
Class Ii Treatment
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