A relatively new material that is being used to manufacture a wide range of body jewelry is Bioplast. Bioplast is a flexible material that is commonly used for belly, eyebrow, lip, nose, tongue and nipple jewelry. These parts of the body tend to be sensitive, making metallic and other rigid body jewelry uncomfortable. Bioplast is fast gaining popularity for use in nipple rings because it offers comfort, durability and safety.
Bioplast is a contraction of biological plastic, but the material is professionally known by the trade name Udel polysulfone. Bioplast is hard and strong, but it is also flexible. It is used in food service equipment, electronics, automotive parts, medical devices and chemical processing equipment. It is safe and effective for use as piercing jewelry because it does not react with biological tissue, and it can sustain heat of up to 250° F, which is more than adequate for sterilization.
The flexibility of Bioplast jewelry allows the wearer a greater range of movement than is afforded by surgical steel and titanium. This flexibility can be important in nipple piercings because breasts shift freely from relatively small body movements. The flexibility of Bioplast reduces tearing and stretching of the nipples, both of which can cause pain, infection and scarring. Bioplast has also been found to have a higher biocompatibility than metallic nipple rings, so chances are reduced that the jewelry will be rejected by the body, which can lead to infection and improper healing. Because of these properties, Bioplast is associated with a shorter healing time and reduced swelling.
Another great feature of Bioplast jewelry is that it is self-threading. Metallic jewelry must be pre-threaded so the ball caps can be affixed, but Bioplast jewelry remains smooth, so it can easily be cut to a custom length. The threading on the jewelry is actually created when the caps are screwed on for the first time. This means Bioplast jewelry can be resized any time before it is first used.
Bioplast nipple rings are about the same price as comparable jewelry made of surgical steel or titanium. They are also available in a variety of colors. However, for nipple rings, one of the most popular styles consists of a metal-colored Bioplast barbell with sterling silver end caps. Some prefer tribal or Celtic end caps, while others like to use letters. Another design is to use end caps connected by a chain with a charm hanging from the center.