In vitro retention efficiency of temporary type zinc oxide cement for orthodontic forced eruption.

OBJECTIVE

To assess the retention efficiency of three types of temporary zinc oxide cement trademarks on forced eruption using intracranal wire device.

METHODS

An in vitro evaluation included intracanal wire device displacement and detachment at 50g load force for 120 days and then the retention resistance at maximum load force.

RESULTS

All groups of temporary zinc oxide cements were efficient to support 50g load forces after 120 days. None statistical differences were found between groups. Zinc oxide cements supported a maximum retention load force, which exceeded in more than 84 times the lowest value obtained in controls (420g).

CONCLUSION

Zinc oxide cements are efficient to retain intracanal wire devices on forced eruption processes in vitro and allows removal of both when necessary (wire device and cement, respectively).