[The possibility of radicular fracture in relation to the form of the endocanal pin]. / Possibilità di frattura radicolare in rapporto alla forma del perno endocanalare.

The aim of this study to assess the in vitro behaviour of different pin shapes in response to identical techniques and to compare the results. It is concluded that cylindrical pins give the best mechanical results though the conical pin may be preferable for certain root conformations.