The magnesium membrane is strong and resorbable at the same time. It can be trimmed to size and shaped for treating individual bone defects. Because the NOVAMag® membrane is completely resorbed within a few months after implantation, a second surgical intervention to remove the membrane is not necessary
Mechanically Strong and resorbable
The NOVAMag® membrane is produced from pure magnesium metal. Magnesium is a biodegradable metal that is resorbed by the human body without toxic residuals1-3. Magnesium ions (Mg2+) released during the degradation process are a naturally occurring component in the human body and are responsible for many physiological processes4-6. Due to the inherent properties of magnesium metal, the NOVAMag® membrane provides a mechanically strong yet degradable material option for bone augmentation surgeries7-8. It is ideal for protecting bone defect voids during bone regeneration and maintaining the positioning of autologous bone and bone augmentation materials such as cerabone®.
Fixation: In a GBR treatment, the membrane should be completely immobilized on both sides of the defect (orally and buccally) with the NOVAMag® fixation screw XS or other commercially available fixation systems comprising of titanium screws.
Degradation time: Resorbable (within 2-4 months)
Resorbable barrier membrane
Controlled degradation (i.e., no early disintegration, no encapsulation).
No removal surgery necessary resulting in fewer surgical interventions and less chair time
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The NOVAMag® membrane has a smooth and shiny surface. Immediately upon implantation, the membrane begins to degrade. The degradation process creates a rough surface that improves the adhesion of the soft tissues.
As the magnesium metal degrades, magnesium salts and hydrogen gas are formed at the surface. The combination of the magnesium metal and the magnesium salts provide an effective barrier during the critical healing period7-8. In some instances, hydrogen gas slightly tents the soft tissue above the NOVAMag® membrane, thereby providing as an additional barrier without affecting bone regeneration.
The NOVAMag® membrane will be completely degraded within a few months after its implantation7-8.
During the degradation of the magnesium metal, the metallic structure is transformed into magnesium salts and a small volume of hydrogen gas is released. A small accumulation of the gas may collect around each device and is visible in X-rays8. The release of hydrogen gas might present as a slight swelling of the soft tissues.
The magnesium salts keep the original shape and position of the membrane until they are resorbed by the body, whereas the small volume of hydrogen gas initially provides a slight tenting of the soft tissue7-8. Both of these degradation by-products continue to maintain a separation of the soft and hard tissues as a second phase to the barrier functionality of the membrane until they are resorbed by the body.
Animal studies have shown that NOVAMag® membrane is usually resorbed within 8-16 weeks after implantation. In an in-vivo performance study, a similar barrier function was observed in comparison to a collagen membrane, with similar volumes of new bone and soft tissue within the defect at every timepoint8.
For instances of exposure, it is recommended that special care is taken for controlling oral hygiene, rinsing the area with e.g. CHX solutions, and avoiding acidic food and/or drink as well as smoking. No additional treatment measures for the soft tissue is required. Cases of small dehiscence should disappear after 2-3 weeks. There is no need for membrane removal in the case of localized exposure.
Upon exposure, the membrane can appear dark grey/ black in colour, which happens normally during the degradation process.
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J. Walker, S. Shadanbaz, T. B. F. Woodfield, M. P. Staiger, and G. J. Dias, “Magnesium biomaterials for orthopedic application: A review from a biological perspective,” Journal of Biomedical Materials Research – Part B Applied Biomaterials, vol. 102, no. 6. John Wiley and Sons Inc., pp. 1316–1331, Aug. 01, 2014. doi: 10.1002/jbm.b.33113.
P. Rider et al., “Biodegradable magnesium barrier membrane used for guided bone regeneration in dental surgery,” Bioact. Mater., vol. 14, pp. 152–168, Aug. 2022, doi: 10.1016/J.BIOACTMAT.2021.11.018.
P. Rider et al., “Analysis of a Pure Magnesium Membrane Degradation Process and Its Functionality When Used in a Guided Bone Regeneration Model in Beagle Dogs,” Mater. 2022, Vol. 15, Page 3106, vol. 15, no. 9, p. 3106, Apr. 2022, doi: 10.3390/MA15093106.