I was tested for metas, glues, and antibiotics. I have tested positive for neomycin sulfate, an antiobiotic, and methyl methacrylate, which is the main component in the glue it works as the bonding agent.ntjis is also used in the dental fillings that are more up to date than the old silver ones. I am writing this as I had surgery yesterday for repair if having a significant tear in my rt. Rotator cuff, which I did by pushing my self up out of sofas, chairs and any other types I’d seats that were very low! And I’m still looking at a revision! But they don’t make a cement without the methacrylate ingredient! So don’t know what I’m going to do about my knee. ANYONE WHO HAS A SUGGESTION IM OPEN TO HEARING THEIR EXPERIENCE.