Uprighting dei molari mesioinclinati mediante la molla in acciaio NiTi-SE

The sequelae of tooth loss are both numerous and varied, increasing in severity with time. Corrective therapeutic measures can become complex both in the diagnosis and treatment of these situations. The need for interdisciplinary approach within the various areas of dentistry to collaborate in the complex rehabilitation becomes very important. The aim of this work is to show the various benefits of molar uprighting from periodontal, orthodontic, and restorative view points, and to evaluate the indications, the advantages and disadvantages of the Ni-Ti-SE steel uprighting springs. This type of spring has been employed to upright 21 molars of 11 patients. It consists of a combination of superelastic material (.16x.22 titanol) which is linked with a steel wire (.17x.22) by means of a crimped cross connector. The Authors determined that in wide areas the pseudoelastic side transfers constant moments and forces to the molars. Besides showed that is possible to apply intrusive forces over the whole uprighting area by bending and adjusting the steel part. The results determine that if an anchoring segment proves the required stability this new uprighting spring is an effective method to upright molars quickly and without periodontal or gnathologic problem.

Gli Autori in questo lavoro presentano le caratteristiche biomeccaniche e tecniche, le indicazioni e le applicazioni cliniche, i vantaggi e gli svantaggi della molla in acciaio NiTi-SE per l’uprighting dei molari. Mediante questa molla utilizzata per raddrizzare 21 molari, vengono analizzati i molteplici benefici dell’uprighting molare dal punto di vista parodontale, ortognatodontico, gnatologico, protesico ed implantologico. Si sottolinea, altresì, l’importanza di un approccio multidisciplinare tra le varie branche odontoiatriche, per collaborare alla risoluzione di una complessa riabilitazione.