Prosecutors indicted two academics Friday on charges of leaking questions from last year's national dentistry examination in violation of the Dental Practitioners' Law.

Itsuo Ueda, 59, a professor at the Health Sciences University of Hokkaido who served on the national examination board between July 1998 and June 2000, and Kenji Kusunoki, 54, a former professor at Ohu University in Fukushima Prefecture, are accused of leaking questions from the exam to Ohu students. According to investigations, the two conspired with Motoo Niwa, 56, a professor at Nippon Dental University in Tokyo's Chiyoda Ward, also a former national examination board member, to obtain information on the oral hygiene questions prepared for the March 2000 national test.

Kusunoki is charged with including those questions in an exam given in February to final-year students at the university and with passing the information on to students during a lecture.