Thank you so much for your inquiry. From what we gather from the question, you were asking about the possibility of acquiring HIV from getting your elbow pricked by a dental tool. The scenario above is considered to be No Risk.
The scenario above also does not meet the three components of the transmission equation (see below). In order for transmission to occur, a number of requirements must be met.
HIV transmission requires the presence of HIV positive fluid (such as semen, vaginal fluid, pre-cum, rectal fluid, breastmilk, etc), coupled with a High, Low, or Negligible Risk activity, that provides the virus with direct access to the bloodstream.
Assuming that dentists adhere to strict guidelines for sanitization and safety, it is extremely unlikely that transmission could occur.
Therefore, even in the event that the tools the dentist used did come in contact with bodily fluid from an HIV positive individual, the dentist did sanitize the tools. Also, the exposure to oxygen, coupled with the fact that there was no direct access to your bloodstream, means there is No Risk of transmission from this activity. One study on HIV transmission and saliva has indicated that "In saliva, inhibition of HIV may be partly due to several inhibitors of viruses that are present in the saliva" (1). With this knowledge, it appears as though there are certain mechanisms that the body produces which render HIV inactive in saliva, essentially making HIV transmission through saliva challenging.
Recommendation: No need for an HIV test with the scenario provided, please refer to a healthcare professional for other health-related questions.
AIDS Vancouver Helpline/Online,
1. Why Is HIV Rarely Transmitted by Oral Secretions?
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