The most reliable number I can find for patients without comorbidity is ~.4/100k[0] (so about 1/250,000). A study specific to dental anesthesia produced a simil

The most reliable number I can find for patients without comorbidity is ~.4/100k[0] (so about 1/250,000). A study specific to dental anesthesia produced a similar number (3 per 1,000,000)[1]. I couldn't find any mortality numbers for local anesthesia, but it would pretty much require an allergic reaction, and I know from past experience I don't have that allergy. So yes the increased risk for general is very low, but not unmeasurably so. [0] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3147285/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3147285/ [1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5535496/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5535496/