Many people avoid dental visits because they fear the pain they may be subjected to by different types of dental tools. The dental drill is perhaps the most feared dental instrument by patients but is commonly used by dentists when providing treatments for dental cavities. Thankfully, there are a wide variety of anesthetics that are also being used by dentists to ensure patients can have a comfortable experience in the dentist’s chair. Among the different types of anesthetics being used by dentists besides topical anesthetics, local anesthetics, intravenous, and general anesthesia is also the nitrous oxide system that is being used since the mid-1800s. Information about whether barbers were using this system is not available despite them performing many dental procedures like extractions in those days. Fortunately, the system is still being used as a means to relax patients during minor dental procedures. It has acquired a reputation as “laughing gas” and is used by approximat...