One of the most frequent side effects of cementation is a decrease in blood pressure, which is caused by the release, or leakage, of monomer into the blood stream. Because Cemex has a lower liquid content than competitive cements, the patient is exposed to reduced levels of monomer release.1 Due to the reduced liquid content, Cemex is potentially a safer product for the surgeon and O.R. staff directly mixing and applying the bone cement.
Cemex has been shown to produce 20 percent less heat than other commercially available formulations.2 Every gram of monomer (liquid component) generates energy equal to 130 Kcal.3 Because of its unique powder component, Cemex requires about 30 percent less liquid than other bone cements, thereby substantially reducing the maximum temperature reached during the chemical reaction.2 The reduced polymerization temperature may reduce the potential for bone and tissue necrosis.4
When cement hardens, one of the effects of the chemical reaction is that the cement contracts or “shrinks”. Shrinkage is associated with a higher incidence of prosthesis loosening and early implant failure.5 The shrinkage phenomenon is proportional to the amount of liquid present in the cement mixture. By using less liquid than other commercially available formulations, Cemex shrinks 67 percent less than its competitors.6
Cemex®System, Cemex® System Fast and Fast Genta are produced by Tecres® S.p.A., Italy, and are distributed exclusively in the United States by Exactech, Inc.
1. Neotron Laboratory, Gatti G., Modena, Italy. 1989.
2. Data on file (TEC2000-55 Rev00) at Tecres, S.p.A., Italy. 2000.
3. Tonoyan A, Schiсk C, Davtyan S. Intercalated Nanocomposites Based on High-Temperature Superconducting Ceramics and Their Properties. Materials 2009;2:2154-2187.
4. Borzacchiello A, et al. The temperature at the bone-cement interface: modeling and in vitro analysis. In: Pipino F [ed]. Bone cement and cemented fixation of implants: 40 years of clinical practice and prospective for the future. Italy: Zenit; 2001. 135-40.
5. Khün D. Bone Cements: Up to Date Comparison of Physical and Chemical Properties of Commercial Materials. Berlin: Springer. 2000. 27-8
6. Trieu H, et al. Comparative measurement of shrinkage of 5 commercial cements prepared under vacuum mixing. In: Grasse F, et al [ed]. Bone cements in the year 2000: state of the art and prospects. Italy: Varese; 2000. 23.