Last week I came to a clinic. The dentisit was washing a patient's teeth, and I saw there was a lot of blood in the patient's mouth. About five minutes later, the dentist touch the bleeding cut and ulcer in my mouth with tools and gloves.
I didn't notice if the tools were new or disinfected, but the dentist didn't change his gloves from beginning to end.
I want to know if the patient before me is infected and remains blood on dentist's glove (just like the dentist did to me), for me is there any risk of being infected by the touch？