Aseptic (if not sterile) techniques.
D000766:Anesthesia, Dental / Q000379:methods; D000891:Anti-Infective Agents, Local / Q000494:pharmacology*; D000985:Antisepsis / Q000379:methods*; D001207:Asepsis / Q000379:methods*; D006801:Humans; D007267:Injections; D009061:Mouth Mucosa / Q000382:microbiology*; D009407:Nerve Block / Q000379:methods
D000891:Anti-Infective Agents, Local