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    Regenerative Biomaterials

    View answers to our most asked questions about Regenerative Biomaterials

    Membranes

    Why you should use a barrier membrane Neomem® acts as a barrier to prevent the epithelial cells from growing into the bone graft. By not placing a membrane, your bone graft can be exposed to tissue growth, bacteria and food.

    Suturing technique for socket preservation using Neomem® Xac. There are many different suturing techniques. We cannot recommend one over the other. However, in socket preservation procedures, it seems as if many clinicians seem to prefer a reverse figure eight type of suture technique. The reverse technique refers to the movement of the suture needle from inside the socket to the outside. This aids in membrane retention. In terms of suture material Biotex PTFE (4.0 or 5.0) is mostly used due to the monofilament nature, which eliminates bacterial wicking.

    The Neomem® Xac manufacturing process The process to manufacture Neomem® Xac is centered on tightly controlled procedures focused on: Best in class procedure, driven by internal research and peer reviewed studies Minimal manipulation to retain optimal regenerative capacity native to tissue Exhaustive post-processing rinsing to effectively eliminate processing reagents Independent, contracted tissue recovery agencies follow strict protocols in accordance with FDA regulations and AATB standards. Serological and microbiological testing is performed at an independent, CLIA certified, FDA registered laboratory against standards that exceed the requirements of the FDA and AATB. Final donor eligibility is determined by a licensed medical director following review of all infectious disease testing, the uniform donor risk assessment interview and all relevant medical records. Placental membranes are recovered from caesarean section procedures and shipped to the manufacturer overnight in validated coolers. The membranes are processed fresh upon receipt and never frozen. The membrane is subjected to a proprietary series of mild aqueous rinses to disinfect and clean the tissue in ISO Class 6 clean rooms without the use of harsh chemicals. Once rinsed, the tissue is dehydrated, cut to size, packaged in foil and Tyvek pouches. Finished grafts are evaluated by dedicated quality control technicians and subjected to terminal sterilization via low dose e-beam irradiation to a sterility assurance level of 10-6. Every step of the process is completed in accordance with current Good Tissue Practices (cGTP), AATB standards and AORN aseptic technique. All processes are validated against appropriate ISO standards. Finally, a comprehensive review of the infectious disease testing, processing records, labeling documentation, and medical records are completed by a dedicated quality associate prior to the tissue being released for distribution.

    No, there is no orientation. Neomem® Xac amnion-chorion membrane, as well as all others we have seen in dentistry, do NOT have any orientation, as they are deepithelialized. They can be placed up or down, folded, and/or layered, without any concern.

    Amnion-chorion membranes generally resorb in 8 to 12 weeks. If the membranes are left exposed, this absorption profile will obviously differ, but given the many factors that could impact an exposed membrane, it is not possible to give a precise resorption profile for an exposed membrane. However, Neomem® Xac amnion-chorion membranes have proven to behave exceptionally well under exposure.

    Comparison between Neomem® and Neomem® FlexPlus The main difference between the two is that one is derived from highly purified type I collagen fibres from bovine Achilles tendon. The other is a single layer collagen membrane derived from porcine peritoneum. Neomem® may be too stiff in some instances, with too much memory that causes it to spring back. Neomem® FlexPlus is supple and drapy ensuring that it drapes over the ridge easily.

    Guidelines after using Neomem® Xac If the membrane is exposed to the oral environment, then for 3 days post-op please instruct the patient to avoid overly aggressive rinsing or swishing with any solution to avoid dislodgement of the membrane. After 3 days, gentle rinsing with salt water is recommended for the next 7 days. The patient should not use any oral rinses 10 days post-op. This includes antiseptics; chlorhexidine (Peridex®), chlorhexidine without alcohol, and other common oral rinses. Oral rinses can adversely impact the health of gingival cells, and chlorhexidine specifically may adversely impact the membrane. After 10 days post-op, the patient may begin using an oral rinse for plaque control.