Implant Sciences to Exhibit New Handheld and Benchtop Quantum Sniffer(TM) at AVSEC World 2006.

Implant's Improved Explosives Detection Devices to Be Unveiled at Premier Aviation Security Event

WAKEFIELD, Mass. -- Implant Sciences Corporation (AMEX: IMX) a developer and manufacturer of products for national security, medicine and industry, announced that it will exhibit its Quantum Sniffer(TM) H-150 handheld and BTS-150 benchtop explosives detection devices at AVSEC World 2006, the premier aviation security event to be held at the Sydney Convention and Exhibition Centre in Sydney, Australia from October 17 through October 19, 2006. Senior management and sales representatives from Implant Sciences will be available at booth 35 on the exhibit floor.

This annual conference attracts a broadly based audience of senior aviation security professionals from the world's airlines, governments, airport authorities, law enforcement agencies and security equipment manufacturers. The conference is a joint event which is produced by a consortium led by the International Air Transport Association (IATA).

Joanne Arsenault, Implant Sciences' VP of Sales & Marketing-Security Division, stated, "With increased globalization, many organizations within the government, industry and the aviation community have a shared responsibility in aviation security. The exhibition features "state of the art" technology and gives commercial and government sector officials from all over the world the opportunity to look at this "next generation" technology designed to enhance security in airports and other aviation facilities. We are pleased to have the opportunity to present our newly improved H-150 handheld and BTS-150 benchtop explosives detection devices at a conference attended by so many decision makers in worldwide aviation security."

About Implant Sciences

Implant Sciences, incorporated in 1984, is using its core ion technology to develop, manufacture and market products for the homeland security, semiconductor and medical device industries. The Company has developed and commercialized portable and bench-top detection devices to identify explosives which are distributed under the Quantum Sniffer(TM) brand name. The Company also provides state of the art ion implantation and wafer analytical services for the semiconductor industry. The Company also develops, manufactures and sells radioactive products for the treatment of cancer, including sales of radioactive seeds for the treatment of prostate cancer and development of a new, FDA approved radioactive source for use in the treatment of breast cancer. For further details on the Company and its products please visit the Company's website at www.implantsciences.com.

Implant Sciences believes that this press release contains forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. Such forward-looking statements are subject to risks and uncertainties. Such statements are based on management's current expectations and are subject to facts that could cause results to differ materially from the forward-looking statements. For further information you are encouraged to review Implant Sciences' filings with the Securities and Exchange Commission, including its Annual Report on Form 10-KSB for the period ended June 30, 2005, and Quarterly Report on Form 10-Q/A for the period ended September 30, 2005, and on Form 10-Q for the periods ended December 31, 2005 and March 31, 2006. The Company assumes no obligation to update the information contained in this press release.