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Related Experiment Video

Updated: Jun 25, 2026

The Establishment of a Murine Maxillary Orthodontic Model

The Establishment of a Murine Maxillary Orthodontic Model

Published on: October 27, 2023

Class II correction with the Cantilever Bite Jumper.

Alexandre Moro¹, Guilherme Janson, Marcos Roberto de Freitas

¹Department of Orthodontics, Federal University of Parana, Brazil. alexandremoro@uol.com.br

The Angle Orthodontist

|February 17, 2009

Summary

The Cantilever Bite Jumper (CBJ) effectively corrects Class II malocclusions, achieving significant skeletal and dentoalveolar changes. This orthodontic appliance demonstrates good vertical dimension control during treatment.

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Area of Science:

Orthodontics
Craniofacial Biology
Dental Mechanics

Background:

Class II malocclusion is a common dental issue requiring effective treatment strategies.
The Cantilever Bite Jumper (CBJ) is an orthodontic appliance used for Class II correction.
Understanding the specific changes induced by the CBJ is crucial for optimizing treatment outcomes.

Purpose of the Study:

To investigate the skeletal, dentoalveolar, and soft tissue alterations resulting from Class II correction using the Cantilever Bite Jumper (CBJ).

Main Methods:

A prospective cephalometric study involving 26 subjects with Class II division 1 malocclusion treated with the CBJ.
Comparison with a control group of 26 untreated subjects with Class II malocclusion.
Analysis of lateral head films using conventional cephalometric and Johnston analyses before and after CBJ therapy.

Main Results:

Class II correction was achieved through a 2.9 mm apical base change, 1.5 mm distal movement of maxillary molars, and 1.1 mm mesial movement of mandibular molars.
The CBJ demonstrated effective control of the vertical dimension during treatment.
A notable side effect identified was potential mesial tipping of mandibular molars due to the lever arm action of the telescope's vertical force vectors.

Conclusions:

The Cantilever Bite Jumper effectively corrects Class II malocclusions.
Treatment with the CBJ results in comparable skeletal and dentoalveolar changes.
Awareness of potential side effects, such as molar tipping, is important for clinical application.