Smart distalization of the upper arch with an easy, efficient and no-compliance procedure

2021 ◽  
pp. 146531252110575
Author(s):  
Lorenza Catalfamo ◽  
Enrico Gasperoni ◽  
Daniel Celli
Keyword(s):  
Optimal Control ◽  
Stainless Steel ◽  
Tooth Movement ◽  
Simple Technique ◽  
Class Ii ◽  
Class Ii Treatment ◽  
Mini Implants ◽  
Anchorage Loss ◽  
Maxillary Arch ◽  
Clinical Cases

In conventional Class II treatment, distalisation of the maxillary arch usually requires multiple phases of tooth movement during which anchorage loss can occur. In order to solve this issue, a rational and simple technique has been developed. Instead of using intraoral distalisers along with palatal mini-implants, Ni-Ti superelastic loops are used to obtain molar distalisation while buccal interradicular miniscrews (BIM), preferably placed between the roots of upper premolars, supply the necessary anchorage. Once the distalisation of molars and second premolars is performed, miniscrews are placed between the roots of first molars and second premolars after removing the previous miniscrews. Elastic chains or tie-backs, which go from the new miniscrews to the hooks of a 0.019×0.025-inch stainless-steel archwire, produce the retraction of incisors, canines and first premolars with optimal control of anchorage. Clinical cases are shown to illustrate the technique.

scholarly journals Distalization of maxillary arch and correction of Class II with mini-implants: A report of two cases

2015 ◽  
Vol 6 (2) ◽  
pp. 226 ◽  
Author(s):  
PawankumarDnyandeo Tekale ◽  
Ketan KVakil ◽  
JeegarK Vakil ◽  
KetanA Gore
Keyword(s):  
Class Ii ◽  
Mini Implants ◽  
Maxillary Arch

scholarly journals Comparative Evaluation of Frictional forces between different Archwire-bracket Combinations

2014 ◽  
Vol 4 (1) ◽  
pp. 22-28 ◽  
Author(s):  
Vinit Singh ◽  
Swati Acharya ◽  
Satyabrata Patnaik ◽  
Smruti Bhusan Nanda
Keyword(s):  
Stainless Steel ◽  
Tooth Movement ◽  
Testing Machine ◽  
Frictional Resistance ◽  
Nickel Titanium ◽  
Orthodontic Bracket ◽  
Fixed Appliance ◽  
Beta Titanium ◽  
Frictional Forces

Introduction: During sliding mechanics, frictional resistance is an important counterforce to orthodontic tooth movement; whichmust be controlled to allow application of light continuous forces.Objective: To investigate static and kinetic frictional resistance between three orthodontic brackets: ceramic, self-ligating, andstainless steel, and three 0.019×0.025” archwires: stainless steel, nickel-titanium, titanium-molybdenum.Materials & Method: The in vitro study compared the effects of stainless steel, nickel-titanium, and beta-titanium archwires onfrictional forces of three orthodontic bracket systems: ceramic, self-ligating, and stainless steel brackets. All brackets had 0.022”slots, and the wires were 0.019×0.025”. Friction was evaluated in a simulated half-arch fixed appliance on a testing machine. Thestatic and kinetic friction data were analyzed with 1-way analysis of variance (ANOVA) and post-hoc Duncan multiple rangetest.Result: Self-ligating (Damon) brackets generated significantly lower static and kinetic frictional forces than stainless steel (Gemini)and ceramic brackets (Clarity). Among the archwire materials, Beta-titanium showed the maximum amount of frictional forceand stainless steel archwires had the lowest frictional force.Conclusion: The static and kinetic frictional force for stainless steel bracket was lowest in every combination of wire.

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.

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