ARAB DENTAL 24 (2011), No. 4 15. Dec. 2011
ARAB DENTAL 24 (2011), No. 4 (15.12.2011)
Page 16-25, Language: Arabic
Rebilda Post System
Endodontic posts do not increase the stability of the remaining tooth substance in endodontically-treated teeth. On the contrary, they weaken them as a result of the additional substance loss due to the post hole drilling. In many cases with a high degree of damage to the clinical crown, the additional loss of this tooth substance is necessary for the long-term retention of the build-up. A system should thus be chosen that minimizes the risk of root fracture, based on biomimetric properties. Adhesively luted endodontic posts reinforced with glass- or quartz-fiber lead to better homogeneous tension distribution when loaded than metal or zirconium oxide ceramic posts and contemporaneously possess advantageous optical properties. To date, however, there are only relatively few clinical studies on metal-free post systems that are promising. There are admittedly substantial differences in the mechanical loading capacity of the different fiber-reinforced endodontic posts. The practitioner should be aware of such differences in order to select a suitable post system followed by a thorough investigation.