Though most people consider piercing a low-risk choice, there are significant risks associated with oral piercings. Common symptoms after oral piercing include pain, swelling and an increased flow of saliva. The mouth is full of bacteria and cannot be kept “clean” in the traditional sense. As a result, infection also occurs more readily after oral piercing, and, though not common, can include serious infections, such as hepatitis or endocarditis (inflammation of the tissue surrounding the heart). Additionally, piercers have no standardized training and may have limited knowledge of anatomy and physiology. If a blood vessel or nerve is in the path of the needle during the piercing, severe and difficult-to-control bleeding or nerve damage can result. For some, blood poisoning, metal allergies, or blood clots can occur. Even after the initial healing process, there is the ongoing risk of serious damage to teeth and gum tissue posed by the mouth jewelry itself. Metal jewelry is often the culprit in cracked or broken teeth. Plastic jewelry reduces this risk, though cannot eliminate it entirely. For piercings of the lips, the “backside” of the jewelry, attached inside the mouth, can be a source of irritation to the opposing tissue. As the metal or plastic rests on the gum tissue, it can abrade and literally wear it away as it moves back and forth. This requires reconstructive surgery to repair and in some instances results in lost teeth. This happens more commonly than people realize. Therefore, it is very important to regularly check the tissues in contact with the metal or plastic piercing to ensure one’s continued health. If the jewelry is causing damage or infection, it is essential to discover this early in the process.
Source: California Dental Association