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Related Experiment Video

Updated: Jun 2, 2026

The Establishment of a Murine Maxillary Orthodontic Model

The Establishment of a Murine Maxillary Orthodontic Model

Published on: October 27, 2023

Mandibular lip bumper for molar torque control.

Giuseppe Celentano¹, Annalisa Longobardi, Rosangela Cannavale

¹Department of Orthodontics, Second University of Naples, Naples, Italy.

Progress in Orthodontics

|April 26, 2011

Summary

This study introduces a novel lip bumper designed to improve orthodontic treatment by enabling molar torque control. This new appliance addresses a key limitation of traditional lip bumpers in managing tooth movement.

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Last Updated: Jun 2, 2026

The Establishment of a Murine Maxillary Orthodontic Model

The Establishment of a Murine Maxillary Orthodontic Model

Published on: October 27, 2023

3D Imaging of PDL Collagen Fibers during Orthodontic Tooth Movement in Mandibular Murine Model

3D Imaging of PDL Collagen Fibers during Orthodontic Tooth Movement in Mandibular Murine Model

Published on: April 15, 2021

Area of Science:

Orthodontics
Dental Mechanics

Background:

Lip bumpers are orthodontic appliances used to influence mandibular incisor position and molar movement.
Traditional lip bumpers transmit lip forces to the dentition, aiding in distalization, uprighting, and expansion.
A significant limitation of current lip bumpers is the lack of precise molar torque control.

Observation:

Lip bumpers can cause flaring of mandibular incisors.
They facilitate distalization and uprighting of mandibular first molars.
Buccal expansion of canines, premolars, and molars is achievable with lip bumpers.

Findings:

Lip forces are effectively transmitted through the appliance to the molars.
Lip bumpers can derotate, expand, constrict, and upright teeth, reinforcing anchorage.
The presented novel lip bumper specifically incorporates the capability for molar torque control.

Implications:

This innovation offers orthodontists enhanced control over molar positioning during treatment.
The new appliance may lead to more predictable and refined orthodontic outcomes.
It addresses a previously unmet need in the application of lip bumper therapy.