Bioplast woes

A few days ago I ordered a Bioplast labret stud from eBay (don't ask why). It seems to be one of the increasingly popular polymers for body piercing, like Teflon (really polytetrafluoroethylene or PTFE, as it's not brand-name) and silicone. Strangely, it seem to be popular for making long barbells for pregnant women's navels, as the kids who hopped on the bellybutton piercing wagon in the 90s are now growing up and having babies. But it's bloody next to impossible to find any useful information on what it actually IS.

Googling results in several definitions:

• What the android Data's skin is made of in Star Trek.
• A trademarked biodegradable form of polyethylene or polypropylene.
• A substrate heater for aquariums.
• A tiny mass of bioplasm, in itself a living unit and having formative power, as a living white blood corpuscle; bioblast. - Webster's Dictionary. (ok, by analogy with "chloroplast" I guess...)

A PubMed search revealed two materials called "bioplast" which seem to be quite different. The most common meaning is a biodegradable, fibrin-containing plastic, which would be very bad for piercings for obvious reasons. The other is "a polyvinylacetate polyethylene" which can be used to make mouthguards and orthodontic braces (!) which seems to be more like the kind of stuff you'd make body jewellery out of. But on the website of a manufacturer of Bioplast jewellery, it says "polysulfone" but when you Google polysulfone it turns out to be a quite rigid material, like polycarbonate (that's what the popular Nalgene bottles are made of, for you non-scientists).

Actually, one of the PubMed abstracts from a Hungarian paper had pretty funny Euroglish:

During the operation we have noticed a wallment size mass of scar between the uterus and the bladder expanding to the height of the orifice of the uterus. The scarily fixed bladder has been separated from the cervix and the scarry wall of the fistula has been cut out. We have brained the cervix towards the vagina and then we've sutured the cervix and the bladder with Dexon 'O' treat, as well.

Yeah, vesico-uterine fistulas are pretty scary, I totally agree...

So can someone please tell me, WHAT exactly am I about to poke into my ear piercing???

(Maybe I should stop doing peculiar things to my body. I dyed the lower half of my hair a weird shade of purplish red today and it looks like I'm wearing a fluffy scarf because it's too unnatural to have grown out of my head.)