Related Experiment Video
Updated: Jul 8, 2026
A Mouse Distraction Osteogenesis Model
Published on: November 14, 2018
Molar distalisation with skeletal anchorage
Antonio Gracco1, Lombardo Luca, Giuseppe Siciliani
1Department of Orthodontics, University of Ferrara, Ferrara, Italy. antoniogracco@libero.it
Background:
Distalisation of the upper molars can be used to treat a dental Class II deep bite malocclusion with a flat facial profile. It is a useful procedure when extraction treatment has been refused and providing distalisation is an appropriate solution to the patient's problem.
Aims:
To describe distalisation of the upper buccal segments using a modified distal jet appliance and miniscrew.
Methods:
Two case reports are presented. The first case was treated with a distal screw appliance: a modified distal jet appliance with a palatal miniscrew and without the premolar arms. The Nance button was anchored to the palatal bone by a miniscrew inserted through a posterior locating plate. Locating holes in the plate ensured that the miniscrew was inserted into a site with optimal bone in the posterior part of the palate. The second case was treated with a similar distal screw appliance, but in this case the locating plate was embedded in the acrylic button. The miniscrew was inserted through a prepared hole in the button and plate. The locating hole(s) ensured that a screw could be inserted into an optimal site to one side of the median palatal suture.
Conclusions:
The distal screw appliance can be used to distalise upper teeth with minimal or no anchorage loss.
