dentist gives patients aids
http://aids2012.ucsf.edu/2012/07/19/how-the-aids-epidemic-changed-the-dental-profession-in-the-1980s/
http://www.huffingtonpost.com/2013/03/28/-w-scott-harrington-hiv-dentist-hepatitis-expose-patients_n_2974053.html
W. Scott Harrington, Oklahoma Dentist, May Have Exposed 7,000 Patients To HIV Or Hepatitis
http://www.deseretnews.com/article/240576/LAWSUIT-SAYS-FLORIDA-DENTIST-GAVE-AIDS-TO-A-6TH-PATIENT.html
http://www.dailymail.co.uk/news/article-2173095/Thousands-patients-risk-HIV-dodgy-Denver-dentist-REUSED-syringes-12-years.html
http://www.cdc.gov/mmwr/preview/mmwrhtml/00001679.htm
http://www.jpost.com/Israel/Dentist-involved-in-AIDS-case-commits-suicide
http://www.independent.co.uk/news/uk/dentist-killed-by-aids-may-have-infected-patients-1567451.html
your attention to detail is lacking here.
Its not transmission from a dentist, its transmission through not very sterilized equiptment.
In the case of Dr. David Acer of Florida, he HAD aids but the medical community is divided over whether he purposively like a serial killer gave it to his patients or whether is was through unsterilized dental instrument that he was using on himself. Its either or, because the medical community is perplexed as they consider dentist to patient transmission to be very rare, complex and hard to accomplish otherwise. But patient to dentist transmission is easily accomplished if the dentist is not wearing a mask or eye gear.