A.Article -- Oral Health in America: A Report of the Surgeon General
“The report elaborated on the meaning of oral health and explains why oral health is essential of general health and well-being.” ( http://www.surgeongeneral.gov/library/oralhealth/ Published by U.S. department of health and human service)
	B. The Journal of the Canadian Dental Association:
“We know that toothbrushes can transmit disease.”(2000; 66:186-7, Accepting the Need for “Overkill” in Infection Control)
	C.USA Today:
“4 out of 5 new toothbrushes straight out of the package are already contaminated…”(27 April 2000, http://216.239.51.100/search?q=cache:AreMjSo78KgC:www.usatoday.com/life/health/doctor, Your toothbrush may be a biohazard)
	D-1.The New Haven Department of Health:
“Laboratory cultures made from used toothbrushes have shown many dangerous pathogenic germs.” (Vol.LII, No. 10, http://info.med.yale.edu/newhavenhealth/documents/historical/monthly/toothbrush.html, The Toothbrush)
	D-2.The Journal of Dentistry for Children:
“Streptococcus and pathogenic microorganisms can be transferred readily when a toothbrush is used, increasing the risk of dental caries and infectious diseases.” (May-June 1989; 56(3): 201-4, Residual contamination of toothbrushes by microorganisms)