Now that you know almost everything you need to know about tongue piercing, including the dangers, it will make sense to choose the best type of jewelry for keeping your mouth healthy. Titanium is the most frequently used jewelry for tongue piercing because it helps reduce the risk of oral allergy i.e. infection. However, medical journals recommend polytetrafluorethylene (PTFE) as a substitute for metal jewelry, which is more likely to cause infection with tongue piercing. That said, there are other types of jewelry that are considered biocompatible for tongue piercings (i.e. used in surgical implants and non-harmful to living tissue), and that includes gold, silver, and surgical steel.