Gravid Matthieu, Eicrhelberger Alexandre, Kanarelis Takis, Masaelli Bahram

Title: The molar protraction techniques


In order to restore the patient's chewing function, if periodontal conditions are optimal, the orthodontist can move forward the maxillary and/or mandibular molars in the following cases: agenesis or extraction of second premolars, loss of the first molars.

In the context of lingual orthodontic treatment for adults we more frequently face this problem (past medical history, uncompensated tooth losses).

The purpose of this study is to identify some of the techniques by which this complex movement is obtained. To this end we will analyse the system of Dr. Wiechmann with fixed Herbst appliance, Dr Wilmes’s Benefit system, the protraction by straight archwire, the protraction on miniscrew with and without double cable, and the protraction without auxiliary or bone anchorage.

In all cases the success of the treatment will depend on the control of the anchorage as well as side-effects related to the mechanics used.

The molar protraction is now facilitated by the bone anchorages and permits to limit the use of the fixed prosthesis. However the orthodontic treatment duration is increased, and in some asymmetrical cases, an occlusal compromise is necessary.