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2010 Design of Medical Devices Conference Abstracts

Rotary Ultrasonic Machining of Dental Ceramics: A Preliminary Study on Subsurface Cracks OPEN ACCESS

[+] Author and Article Information
Zhichao Li, Matthew Stanco, Zhigang Xu

North Carolina Agricultural and Technical State University

Weilong Cong, Zhijian Pei

Kansas State University

Clyde Treadwell

Sonic-Mill Company

J. Med. Devices 4(2), 027516 (Aug 10, 2010) (1 page) doi:10.1115/1.3442795 History: Published August 10, 2010

Abstract

Commercially available dental computer aided design/computer aided manufacture (CAD/CAM) systems usually use abrasive machining processes such as diamond grinding and milling. One of the major disadvantages of abrasive machining processes is subsurface cracks. In the present paper, rotary ultrasonic machining (RUM) technology is introduced into machining of alumina dental ceramics. The subsurface cracks are observed under scanning electron microscope. Effects of ultrasonic vibration on the subsurface cracks are also investigated. Results show that RUM is a very promising process to significantly reduce subsurface cracks in CAD/CAM of dental ceramics.

Copyright © 2010 by American Society of Mechanical Engineers
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