Treatment changes in Class II malocclusion

ABSTRACT Objective: To compare two molar distalization devices, the Pendulum appliance (PA) and the Jones Jig (JJ) in dental Class II patients. Materials and Methods: Pretreatment and postdistalization lateral cephalograms and study models of 20 subjects (6 males, 14 females) Class II malocclusion subjects were examined. PA and JJ group both consisted of 10 patients each with a mean pretreatment age of 12 years 1 month for females and 12 years 5 months for males. The PA and the JJ appliance were activated once in a month until Class II molar relationship was corrected to a super Class I molar relationship in both groups. Initial and final measurements and treatment changes were compared by means of Paired t-test. Results: Maxillary first molar distalized an average of 3.85 mm in the PA and 2.75 mm in the JJ between T1 and T2; rate of molar distalization was 1.59 mm/month for PA, and the JJ appliance averaged 0.88 mm/month, distal molar tipping was greater in PA (6.2°) than in the JJ (3.9°). Average mesial movement of the premolars was 2.2 mm with PA and JJ both. JJ showed a greater rotation of first molars after distalization as compared to PA. The increase in vertical facial height was also greater for JJ as compared to PA. Conclusions: Both the appliances were effective in molar distalization with PA requiring less distalization time (16 days less than JJ). Some adverse effects were noted with both which one should strive to control.

Download Full-text

Comparison between direct vs indirect anchorage in two miniscrew-supported distalizing devices

The Angle Orthodontist ◽

10.2319/040715-231.1 ◽

2016 ◽

Vol 86 (3) ◽

pp. 399-406 ◽

Cited By ~ 6

Author(s):

Mauro Cozzani ◽

Mattia Fontana ◽

Giuliano Maino ◽

Giovanna Maino ◽

Lucia Palpacelli ◽

...

Keyword(s):

Treatment Time ◽

Class Ii ◽

T Test ◽

Class Ii Malocclusion ◽

Lateral Cephalograms ◽

Treatment Changes ◽

The Mean ◽

T1 And T2 ◽

Student’S T ◽

Student’S T Test

ABSTRACT Objective: To compare two distalizing devices supported by palatal miniscrews, the MGBM System (MGBM) and the Distal Screw appliance (DS), in dental Class II patients. Materials and Methods: Pretreatment (T1) and postdistalization (T2) lateral cephalograms of 53 Class II malocclusion subjects were examined. MGBM consisted of 29 patients (16 males, 13 females) with a mean pretreatment age of 12.3 ± 1.5 years; DS consisted of 24 patients (11 males, 13 females) with a mean pretreatment age of 11.3 ± 1.2 years. The mean distalization time was 6 ± 2 months for MGBM and 9 ± 2 months for DS. Initial and final measurements and treatment changes were compared by means of a Student’s t-test. Results: Maxillary superimpositions showed that the maxillary first molar distalized an average of 5.5 mm in the MGBM and 3.2 mm in the DS between T1 and T2; distal molar tipping was greater in the MGBM (10.3°) than in the DS (3.0°). First premolar showed a mean mesial movement of 1.4 mm, with a mesial tipping of 4.4° in the MGBM; on the contrary, first premolar showed a distal movement of 2.2 mm, with a distal tipping of 6.2°, in the DS. Conclusions: The MGBM system resulted in greater distal molar movement and less treatment time, resulting in more efficient movement than was associated with the DS; DS showed less molar tipping during distalization.

Download Full-text

Treatment Effects of the Herbst Appliance in Class II Malocclusion Patients after the Growth Peak

European Journal of Dentistry ◽

10.1055/s-0040-1715789 ◽

2020 ◽

Author(s):

Rodrigo Hermont Cançado ◽

Guilherme Janson ◽

Bryan Tompson ◽

José Carlos de Castro Alvares ◽

Fabrício Pinelli Valarelli ◽

...

Keyword(s):

Class Ii ◽

Control Group ◽

Class Ii Malocclusion ◽

Control Groups ◽

Lateral Cephalograms ◽

Treatment Changes ◽

Fixed Appliances ◽

And Control ◽

Experimental Group ◽

Mandibular Incisors

Abstract Objective The aim of this study was to evaluate dentoskeletal changes in the treatment of Class II malocclusion with the Herbst Cantilever Bite Jumper (CBJ) appliance, associated with multibracket appliances after the growth peak, at pretreatment. Materials and Methods A sample of 37 individuals was divided into two groups: the experimental group comprised 16 patients treated consecutively for a mean period of 2.52 years with the Herbst CBJ appliance associated with multibracket appliances. A total of 21 subjects (10 males and 11 females) with Class II malocclusion and mean age at T1 of 16.08 years were followed for a mean period of 2.12 years composed the control group. Comparisons between the two groups were performed using initial and final lateral cephalograms. Comparisons between experimental and control groups at pretreatment and of the treatment changes were performed by Mann–Whitney or independent t-tests. Results Experimental group exhibited a significantly greater labial inclination of the mandibular incisors in comparison to the control group. Additionally, significantly greater corrections in overbite, overjet, and molar relationship were observed in the experimental than in the control groups. Conclusion The effects of the Herbst CBJ appliance, associated with fixed appliances after the growth peak in Class II malocclusion treatment are correction in molar relationship toward a Class I relationship, decrease of the overjet, decrease of the overbite, and mandibular incisors labial inclination.

Download Full-text

Soft-tissue changes after Class II malocclusion treatment using the Sander bite-jumping appliance: a retrospective study

Minerva Stomatologica ◽

10.23736/s0026-4970.19.04197-9 ◽

2019 ◽

Vol 68 (3) ◽

Cited By ~ 1

Author(s):

Michele Tepedino ◽

Maria V. Della Noce ◽

Domenico Ciavarella ◽

Patrizia Gallenzi ◽

Massimo Cordaro ◽

...

Keyword(s):

Retrospective Study ◽

Soft Tissue ◽

Class Ii ◽

Class Ii Malocclusion ◽

Tissue Changes ◽

Soft Tissue Changes

Download Full-text

Uso de propulsor mandibular fixo Flex Developer como recurso no tratamento da Classe II em paciente não colaborador

Orthodontic Science and Practice ◽

10.24077/2020;1352-4051 ◽

2020 ◽

Vol 13 (52) ◽

pp. 40-51

Author(s):

Renato Barcellos Rédua

Keyword(s):

Upper Airway ◽

Class Ii ◽

Class Ii Malocclusion ◽

Skeletal Class ◽

Advantages And Disadvantages ◽

Skeletal Class Ii ◽

High Incidence ◽

Therapeutic Alternatives ◽

Smile Aesthetics ◽

Treatment Alternatives

Class II malocclusion has a high incidence in the population, which may compromise smile aesthetics, occlusion function and stability. Skeletal Class II may affect facial aesthetics and upper airway volume. Class II malocclusion is routinely associated with skeletal Class II condition, having as treatment alternatives the use of Extra Buccal Appliance (EBA) or removable or fixed propulsor appliance. This article describes a case of a patient who did not accept the use of EBA and so it was fitted a Flex Developer propulsor for Class II correction and discussed the advantages and disadvantages of therapeutic alternatives for Class II correction.

Download Full-text

Functional Appliances in the Treatment of Class II Malocclusion- A Review

10.24087/iam.2017.1.1.22 ◽

2017 ◽

Vol 1 (1) ◽

Author(s):

Aakash Shah ◽

Purvesh Shah ◽

Santosh Goje ◽

Romil Shah ◽

Bhumi Modi

Keyword(s):

Class Ii ◽

Class Ii Malocclusion ◽

Functional Appliances

Download Full-text

Comparative Dentoskeletal Study of Class II Division 1 and Class II Division 2 Malocclusion Subjects

Orthodontic Journal of Nepal ◽

10.3126/ojn.v1i1.9365 ◽

2011 ◽

Vol 1 (1) ◽

pp. 36-41

Author(s):

Jyoti Dhakal

Keyword(s):

Class Ii ◽

Class Ii Malocclusion ◽

Basic Difference ◽

Cephalometric Radiograph ◽

Significant Difference ◽

Division 1 ◽

Dentoskeletal Morphology ◽

Division 2 ◽

Dental Cast ◽

Class Ii Division 1

The dentoskeletal characteristics of Class II malocclusion subjects were evaluated using cephalometric radiograph and dental cast of 60 untreated patients. The sample included 30 Class II Division 1 and 30 Class II Division 2 malocclusion patients. The inter-canine, inter-premolar, inter-molar, inter-canine alveolar, inter-premolar alveolar, inter-molar alveolar widths are measured on study models. The result showed statistically significant difference between the groups for mandibular inter-canine width only. The cephalometric analysis revealed that SNB angle was responsible for the skeletal sagittal difference between the two groups except for the position of maxillary incisors. No basic difference in dentoskeletal morphology existed between Class II Division 1 and Class II Division 2 malocclusions.

Download Full-text

Evaluation of 3D Printed Modified Twin Block for Correction of Skeletal Class II Malocclusion in Growing Females

Case Medical Research ◽

10.31525/ct1-nct04028661 ◽

2019 ◽

Author(s):

Keyword(s):

Class Ii ◽

Class Ii Malocclusion ◽

Twin Block ◽

Skeletal Class ◽

Skeletal Class Ii ◽

3D Printed

Download Full-text

Proxy Crimps: A Transformative Solution

The Journal of Indian Orthodontic Society ◽

10.1177/0301574220963419 ◽

2021 ◽

pp. 030157422096341

Author(s):

Jamoy James ◽

Payal Ostwal ◽

Juhi Notra

Keyword(s):

Low Cost ◽

Class Ii ◽

Class Ii Malocclusion ◽

Functional Appliances

The Forsus appliance is one of the most commonly used rigid fixed functional appliances in the correction of class II malocclusion. It is often seen that parts go missing with regular usage of the appliance. Replacement of the same is expensive and also requires a large inventory. An innovative low-cost and easy option for lost or broken split crimps is described in this article.

Download Full-text