[Current evaluation of a self-snapping screw system in traumatologic and orthodontic surgery].

Since the first description in 1970, by F. X. Michelet, of the use of the mini plate system in maxillo-facial surgery, if the fundamental principles remain the same, the equipment has been constantly improved. The plates have been modified in structure and shape, the screws becoming self-tapping and self-drilling and finally self-breaking. The head of the screw has diminished to the point of not going over the level of the plate. The ancillary material is now more performing and easier to use. The authors have presented 3 years ago a new self breaking screw of which they now explain the technical and biomechanical bases, the necessities and the indications insisting on the numerous advantages of this system.