Morse Taper
What is it, how does it work, where and how is it used in implantology?

The screwed connection has always been a major player in implantology. However, the Morse taper connection offers numerous advantages, allowing the use of simple but effective techniques that eliminate micro-movements of the abutment, eliminate unscrewing of the abutment and eliminate the risk of bacterial infiltration at the abutment-implant interface.

Continue reading this in-depth article on the Morse taper to discover its characteristics, angulation degrees and advantages!

Summary

What is a Morse taper and what characteristics does it have to have?

The Morse taper is a type of taper used primarily in mechanical engineering to connect machine shafts, tools and other rotating parts. It is named after the American engineer Stephen Morse, who developed it in 1864.

The Morse taper consists of a conical surface (die) with a certain inclination, which fits onto a corresponding conical surface (patrice) on another part of the equipment. This configuration allows a tight and stable fit between the two parts.


To connect two parts with Morse cones, a force is applied to adhere the conical surfaces (die and male) together. Generally, to separate the parts, an extractor or hammer is used to break the adhesion of the conical surfaces and allow them to be removed.


The main features of the Morse taper include:
  1. conical shape: the Morse taper has a conical shape that allows a stable fit between the matrix and the male;
  2. dimensional accuracy: must be produced with precise tolerances in order to ensure a secure and stable fit between the matrix and the male;
  3. resistant materials: must be made of robust and wear-resistant materials in order to withstand the forces and temperatures generated during use;
  4. smooth surface: the surface of the Morse taper must be finely machined to ensure uniform contact and reduce wear during use;
  5. ease of assembly and disassembly: it must be designed to allow easy assembly and disassembly between the matrix and the male.

What are the degrees of angulation to determine that it is a Morse taper?

Morse cones are identified by their angle of inclination. There are different degrees that are used to distinguish different types of Morse taper. The two main ones are:
  1. Standard Cone Morse (CM), with an inclination angle of 5.18629 degrees;
  2. Japanese Cone Morse (JIS), with an inclination angle of 5.575 degrees.

Can a Morse taper be defined as a device with a 2° angle?

In general, a cone with an angle of two degrees is not considered a standard Morse cone. As mentioned above, standard Morse cones have an angle of approximately 5.18629 degrees (for standard Morse cones) or 5.575 degrees (for Japanese Morse cones).

However, there are devices with different tilt angles that do not fall into the standard category of Morse cones. They may be used for specific or customised purposes, but are not considered ‘Morse cones’ in the traditional sense.

If you have a device with an angle of two degrees and you want to identify it correctly, you may need to determine whether it corresponds to a specific standard or whether it is a customised or unconventional device.

The ConEx™ taper connection: the BioService implant line synonymous with precision and reliability

The ConEx™ taper connection is characterised by its internal cone with a 5° angle and a depth of 1.7 mm, ensuring optimal stability for prosthetic abutments. The anti-rotational component is guaranteed by the 2.3 mm hexagon, a feature that distinguishes the MaTrix™ implant lines and has proven its effectiveness and reliability for over 20 years.
 
The ConEx™ connection allows you to exploit the full potential of the Morse taper coupling system, offering unprecedented processing precision. The ergonomic design and ease of use make the coupling process between implant and abutment extremely efficient and safe.

It is precisely because of the tight fit between implant and abutment (Fixture and Abutment) that the Morse taper connection brings a number of advantages, such as:
  • no micromovements;
  • excellent stability of prosthetic abutments;
  • elimination of the unscrewing of the through-screw;
  • no unsightly holes;
  • optimal soft tissue management in the peri-implant area at the crestal level;
  • elimination of bacterial infiltrates.
Thanks to the precision and reliability that this system offers, excellent and long-lasting results can be achieved, significantly improving the quality of work and patient satisfaction.

Equally advantageous is the tapered prosthesis, an alternative technique to the more traditional screw-retained and cemented approaches that uses the same coupling principle as the tapered connection.

How does it work, what are its features and why is it so effective? Don't miss BioService's next article on this very topic!

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