Is dental treatment under local anesthesia safe?

Dental treatment is, at least according to the literature and our clinical experience, completely safe. The world literature describes only a few cases of allergic reactions supposedly associated with preservatives added to anesthetic solutions. Of course, local complications could theoretically occur, such as a local hematoma resulting from injury to a blood vessel caused by the needle as it passes through tissue. A hematoma can become infected, which means an additional complication, so in the case of larger hematomas we prescribe an antibiotic. Nerve injuries from the needle are almost impossible. Breakage of a needle in the tissue can be a serious complication that needs to be managed with an additional surgical procedure to remove the broken part. Anesthetics themselves are completely safe solutions and their effects disappear entirely within a short period of time.
Feeling faint during administration of the anesthetic is a consequence of vasovagal syncope (fear) and not an effect of the local anesthetic.

Have a nice day.