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TODAY news for Thursday, April 30, 2007

School of Dentistry news

Dentistry professor leads group in rewriting guidelines for evaluation of dental materials

Yiming Li, PhD
Yiming Li, PhD
Yiming Li, PhD, professor, director of the Center for Dental Research, School of Dentistry, is serving as chair for the American National Standard/American Dental Association Specification for Biological Evaluation Materials, a body of which he has been a longtime member.

This prestigious committee developed Specification No. 41, “Recommended standard practices for biological evaluation of dental materials,” a 202-page report with Dr. Li as the lead author, which provides guidelines for determing biocompatibility (safety) for all dental materials, devices, and equipment.

Tests cover in vitro tests of toxicity (oral inhalation), skin irritation and intracutaneous reactivity, sensitization, genotoxicity and local effects after implantation, and dental materials-specific tests such as pulp and dentin usage, pulp capping, and endodontic usage.

Working with Dr. Li were: Angela Blackwell, Center for Devices and Radiological Health, FDA, Cheng & Associates, Chicago; Scott Erickson, 3M ESPE, St. Paul, Minnesota; Stephen Gruninger, American Dental Association, Chicago; Carl T. Hanks, University of Michigan, Ann Arbor; Steven Jeffries, Dentsply International, York, Pennsylvania; Elisabet L. Kostoryz, University of Missouri–Kansas City; Elden Lamprecht, 3M ESPE, Minneapolis, Minnesota; Jack Lemons, University of Alabama, Birmingham; Milton Marshall, Texas Heart Institute, Houston; Ken Nakatani, 3M ESPE, Minneapolis; Cornelis Pameijer, University of Connecticut, Farmington; Ros Randall, 3M ESPE, St. Paul; Pamela Scott, U.W. Food & Drug Administration, Rockville, Maryland; and Chakwan Siew, American Dental Association, Chicago.

By Nancy Yuen

TODAY news for Thursday, April 30, 2007