L'Orthodontie Française
MENUMise en place des mini-vis : avec ou sans avant-trou ? Volume 78, issue 2, Juin 2007
I, 545 avenue du Pr Jean-Louis Viala, 34193 Montpellier Cedex 5, France
INSERM ADR 08 , 99 rue Puech Villa, 34197 Montpellier Cedex 5, France
- Key words: Anchorage, Mini-screw, Self-drilling, Self-tapping, Screwing couple
- DOI : 10.1051/orthodfr:2007009
- Page(s) : 123-32
- Published in: 2007
The recent introduction of the new systems of intraosseous anchorages called
mini-screw, allowing an immediate loading, has revolutioned the clinical and
biomechanical approach of anchorage in orthodontics. Trans-gingival
insertion by a manual screwdriver is done easily and most frequently without
before-hole. The goal of this experimental study is to show that the
realization of a before-hole limits the intraosseous constraints during
screwing. This having short-term effects on the primary stability of the
mini-screws and long-term effects on their maintenance.
Materials and methods: two self-drilling
and self-tapping mini-screws Aarhus