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Slide Caratteristiche impianti

Morse Taper Locking Connection / Cold Weld Seal

When two metal conical parts, each with walls at an angle of 5 degrees or less are fitted together there will be a wedging effect due to the friction between the 2 walls. (Morse tapered connection) Additionally, if the male part has an angle of  approximately  0,25 degrees more than the female conical part, a seal will be formed at the top of the cone.
When this effect is applied to the  implant/abutment connection the Morse locking taper provides several advantages:

  • Strength:
    The Morse locking taper connection shows the highest reliability(99% ) in comparison with internal hex  (96% and external hex (31%)(Almeida and Coelho).
  • Elimination of the micro gap:
    In a conventional system, held in place by the internal screw, the connection between the abutment and the implant is not a perfect fit, there is always a small space between the 2 parts. The Morse locking tapered connection is shown to leave a gap with is smaller than 1 micron, whereas the smallest  bacterium measures approx. 1,5 microns.
  • Reduction of Micro movements/Reduction of screw loosening:
    Screw loosening is the most common reason for prosthetic failure in single teeth reconstructions (12 and 20%) Morse taper locking connection  absorbs vibration and functional stress(Merz) avoiding screw loosening (0,37%).

 

Morse-locking-tapered-connection

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