Cephalometric appraisal of Class II treatment effects after functional and fixed appliances: a retrospective study

Abstract Objective: To identify pretreatment cephalometric variables for the prediction of individual mandibular outcomes of functional jaw orthopedics (FJO) followed by fixed appliances in Class II patients treated at the peak in mandibular growth. Materials and Methods: The study was performed on 51 subjects (24 females, 27 males) with Class II malocclusion. First-phase therapy was accomplished with a twin block in 16 subjects, a stainless steel crown Herbst in 15 subjects, and an acrylic splint Herbst in 20 subjects. Lateral cephalograms were available at the start of treatment with FJO and at the completion of fixed appliance therapy. All subjects received FJO at the peak in mandibular growth (CS 3 at T1). Individual responsiveness to Class II treatment including FJO was defined on the basis of the T2-T1 increment in total mandibular length (Co-Gn) when compared with untreated Class II subjects. Results: Discriminant analysis identified a single predictive parameter (Co-Go-Me°) with a classification power of 80%. Pretreatment vertical and sagittal parameters were not able to improve the prediction based upon the mandibular angle. Conclusions: A Class II patient at the peak in skeletal maturation (CS 3) with a pretreatment Co-Go-Me° smaller than 125.5° is expected to respond favorably to treatment including FJO. A Class II patient at CS 3 with a pretreatment value for Co-Go-Me° greater than 125.5° is expected to respond poorly to treatment including FJO.

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Treatment effects of the Carriere® Motion 3D™ appliance for the correction of Class II malocclusion in adolescents

The Angle Orthodontist ◽

10.2319/121418-872.1 ◽

2019 ◽

Vol 89 (6) ◽

pp. 839-846 ◽

Cited By ~ 2

Author(s):

Hera Kim-Berman ◽

James A. McNamara ◽

Joel P. Lints ◽

Craig McMullen ◽

Lorenzo Franchi

Keyword(s):

Treatment Group ◽

Phase I ◽

Phase Ii ◽

Treatment Effects ◽

Class Ii ◽

Occlusal Plane ◽

Class Ii Malocclusion ◽

Forward Movement ◽

Skeletal Changes ◽

Fixed Appliances

ABSTRACT Objectives: To determine the treatment effects produced in Class II patients by the Carriere® Motion 3D™ appliance (CMA) followed by full fixed appliances (FFA). Materials and Methods: This retrospective study evaluated 34 adolescents at three time points: T1 (pretreatment), T2 (removal of CMA), and T3 (posttreatment). The comparison group comprised 22 untreated Class II subjects analyzed at T1 and T3. Serial cephalograms were traced and digitized, and 12 skeletal and 6 dentoalveolar measures were compared. Results: Phase I with CMA lasted 5.2 ± 2.8 months; phase II with FFA lasted 13.0 ± 4.2 months. CMA treatment restricted the forward movement of the maxilla at point A. There was minimal effect on the sagittal position of the chin at pogonion. The Wits appraisal improved toward Class I by 2.1 mm during the CMA phase but not during FFA. Lower anterior facial height increased twice as much in the treatment group as in controls. A clockwise rotation (3.9°) of the functional occlusal plane in the treatment group occurred during phase I; a substantial rebound (−3.6°) occurred during phase II. Overjet and overbite improved during treatment, as did molar relationship; the lower incisors proclined (4.2°). Conclusions: The CMA appliance is an efficient and effective way of correcting Class II malocclusion. The changes were mainly dentoalveolar in nature, but some skeletal changes also occurred, particularly in the sagittal position of the maxilla and in the vertical dimension.

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Class II treatment with functional appliances: A meta-analysis of short-term treatment effects

Seminars in Orthodontics ◽

10.1053/j.sodo.2014.09.008 ◽

2014 ◽

Vol 20 (4) ◽

pp. 324-338 ◽

Cited By ~ 9

Author(s):

Nikhilesh R. Vaid ◽

Viraj M. Doshi ◽

Meghna J. Vandekar

Keyword(s):

Treatment Effects ◽

Meta Analysis ◽

Class Ii ◽

Term Treatment ◽

Short Term ◽

Short Term Treatment ◽

Class Ii Treatment ◽

Functional Appliances

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Stability of class II treatment with Pendulum and Jones jig followed by fixed appliances

Orthodontics and Craniofacial Research ◽

10.1111/ocr.12447 ◽

2020 ◽

Author(s):

Mayara Paim Patel ◽

José Fernando Castanha Henriques ◽

Karina Maria Salvatore Freitas ◽

Renato Almeida ◽

Guilherme Janson

Keyword(s):

Class Ii ◽

Class Ii Treatment ◽

Fixed Appliances

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Comparison of the dentoskeletal and soft tissue changes with the cervical headgear and Jones Jig followed by fixed appliances in Class II malocclusion patients: A retrospective study

International Orthodontics ◽

10.1016/j.ortho.2020.03.001 ◽

2020 ◽

Vol 18 (3) ◽

pp. 424-435

Author(s):

Fernanda Pinelli Henriques Fontes ◽

Silvio Augusto Bellini-Pereira ◽

Aron Aliaga-Del-Castillo ◽

Mayara Paim Patel ◽

Marcos Roberto de Freitas ◽

...

Keyword(s):

Retrospective Study ◽

Soft Tissue ◽

Class Ii ◽

Class Ii Malocclusion ◽

Tissue Changes ◽

Fixed Appliances ◽

Soft Tissue Changes

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Class II treatment effects of the Frankel appliance

European Journal of Orthodontics ◽

10.1093/ejo/25.3.301 ◽

2003 ◽

Vol 25 (3) ◽

pp. 301-309 ◽

Cited By ~ 28

Author(s):

G. R. P. Janson

Keyword(s):

Treatment Effects ◽

Class Ii ◽

Class Ii Treatment

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Class ii treatment effects with fixed functional appliances: jasper jumper vs. forsus fatigue resistant device

Orthodontics and Craniofacial Research ◽

10.1111/ocr.12515 ◽

2021 ◽

Author(s):

D.C. Pupulim ◽

J.F.C. Henriques ◽

K.M.S. Freitas ◽

F.P.H. Fontes ◽

T.M.F. Fernandes

Keyword(s):

Treatment Effects ◽

Class Ii ◽

Class Ii Treatment ◽

Functional Appliances ◽

Forsus Fatigue Resistant Device

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Long-term skeletal and dental effects and treatment timing for functional appliances in Class II malocclusion

The Angle Orthodontist ◽

10.2319/052912-450.1 ◽

2012 ◽

Vol 83 (2) ◽

pp. 334-340 ◽

Cited By ~ 40

Author(s):

Lorenzo Franchi ◽

Chiara Pavoni ◽

Kurt Faltin ◽

James A. McNamara ◽

Paola Cozza

Keyword(s):

Treatment Group ◽

Class Ii ◽

Control Group ◽

Class Ii Malocclusion ◽

Treatment Timing ◽

Class Ii Treatment ◽

Lateral Cephalograms ◽

Functional Appliances ◽

Fixed Appliances

ABSTRACT Objective: To analyze the long-term skeletal and dentoalveolar effects and to evaluate treatment timing of Class II treatment with functional appliances followed by fixed appliances. Materials and Methods: A group of 40 patients (22 females and 18 males) with Class II malocclusion consecutively treated either with a Bionator or an Activator followed by fixed appliances was compared with a control group of 20 subjects (9 females and 11 males) with untreated Class II malocclusion. Lateral cephalograms were available at the start of treatment (mean age 10 years), end of treatment with functional appliances (mean age 12 years), and long-term observation (mean age 18.6 years). The treated sample also was divided into two groups according to skeletal maturity. The early-treatment group was composed of 20 subjects (12 females and 8 males) treated before puberty, while the late-treatment group included 20 subjects (10 females and 10 males) treated at puberty. Statistical comparisons were performed with analysis of variance followed by Tukey's post hoc tests. Results: Significant long-term mandibular changes (Co-Gn) in the treated group (3.6 mm over the controls) were associated with improvements in the skeletal sagittal intermaxillary relationship, overjet, and molar relationship (∼3.0–3.5 mm). Treatment during the pubertal peak was able to produce significantly greater increases in total mandibular length (4.3 mm) and mandibular ramus height (3.1 mm) associated with a significant advancement of the bony chin (3.9 mm) when compared with treatment before puberty. Conclusion: Treatment of Class II malocclusion with functional appliances appears to be more effective at puberty.

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