Ashley Tian/Shanghai Daily 

You can become infected with HIV in a dentist's chair? Yes, it's possible.
According to a recent online survey, more than 60 percent of respondents didn't have the least clue that they can end up with AIDS during oral surgery or any dental procedure and most said they go to see a doctor if they had oral diseases or dental problems.
What's more, only 30 percent of the respondents would question the safety of equipment in dental surgeries, according to the survey.
Well, you need to be careful.
Medical experts have warned that it's possible to transfer HIV in oral treatment, if the equipment has not been disinfected properly. In fact, according to a story in last Wednesday's Shanghai Morning Post, Shanghai No.9 People's Hospital detected two HIV-positive patients when treating them for mouth ulcers.
Those who seek treatment for mouth problems may not realize that they're infected by AIDS and doctors and nurses may overlook the fact that common mouth ulcers or inflammation of facial lymph glands can also be early symptoms of AIDS.
While most big hospitals meet the disinfection standards of oral equipment, some private dental clinics may not be able to. Worse, a few of them just don't care.
Therefore, choosing a public hospital over small clinics would be a good way to avoid risks, but if you have to go to a small clinic, ask questions and check the condition of their equipment. A temperature of 60 degrees Celsius kills the virus instantly.