Cutting Through Dental Machining Challenges

Using the right application-specific end mills offers excellent results.

Example of cobalt chrome dental part

The production of dental prosthetics through use of modern manufacturing techniques presents unique challenges. A successful process is interdependent on the performance of the machine, the CAD/CAM software, and the cutting tools, in order to attain the level of precision necessary to achieve the complex contours, exacting tolerances, and consistent surface finishes the industry demands.

Because the cutting tools have a direct impact on the final result, they can be the determinate factor in the ultimate success of the process. End mills that have been developed specifically for restorative dental applications offer additional benefits. For example, Emuge Corp., West Boylston, MA, offers dental end mills featuring solid carbide construction with optimized designs. These products provide greater stability in long reach applications to minimize deflection, and feature cutting geometries and coatings engineered specifically to address the unique characteristics of the materials most commonly used in restorative dentistry, including cobalt-chrome, titanium, zirconium-oxide, PMMA (polymethyl methacrylate) and wax.

Emuge dental tools are suitable for use in the wide variety of machines currently in use for dental prosthetics manufacturing. These range from small dedicated, stand-alone or closed systems – unique to the dental field – up to full 5-axis high speed machining centers that are used throughout a broad range of manufacturing industries, such as mold & die and aerospace, to manufacture complex components. Typically, the cutting tools used in these closed systems are proprietary to the machines manufacturer; however, the Emuge line includes tools made to the unique specifications of some of the more popular systems, including the KaVo Everest and 3M Lava systems. The ability to open these systems competitively affords the opportunity to evaluate various cutting tool solutions and identify the best individual solution for each material and application, ultimately maximizing productivity while minimizing costs.

Emuge offers a full line of dental end mills.

Emuge dental end mills are available in ball nose and torus (radius-corner) designs with two and four cutting edges, in diameters ranging between 1mm and 4mm, feature cutting diameter tolerances of 0.0100mm (0.0004"), and radius tolerances of ±0.0050mm (0.0002"). The tools come in a variety of length configurations with 3mm or 6mm shanks, precision ground to a h6 tolerance.

These end mills are available with a range of coatings, including two TiAlN variations; one to protect excessive wear in metal alloys and another that provides greater lubricity and heat resistance in titanium applications. Two diamond coatings are available to protect against chip-out, ensuring extremely long tool life and various grades of zirconium oxide. Tools are also available with CrN coating, which prevents against adhesion when cutting PMMA and wax.

This program of end mills is compatible with all software systems used in the dental prosthetics field including hyperDENT CAM software from Emuge’s technical partner – Open Mind Technologies U.S.A. Inc. (openmind-tech.com).

 

Emuge Corp.
West Boylston, MA
emuge.com

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