Porous titanium granules in critical size defects of rabbit tibia with or without membranes
Rafael Arcesio Delgado-Ruiz , Jose Luis Calvo-Guirado , Marcus Abboud , Maria Piedad Ramirez-Fernández , Jose Eduardo Maté-Sánchez , Bruno Negri , Alex Won , Georgios Romanos
International Journal of Oral Science ›› 2014, Vol. 6 ›› Issue (2) : 105 -110.
Porous titanium granules in critical size defects of rabbit tibia with or without membranes
Porous titanium granules (PTGs) that support growth of new bone could provide a robust scaffold for dental and skeletal repair. As a truly natural replacement, a patient’s own bone tissue seems ideal for such procedures, but bone implants tend to degrade so artificial materials may be more desirable for some applications. PTGs are sturdy and allow colonization by bone cells. Researchers led by Rafael Delgado-Ruiz of Stony Brook University in the USA tested the capacity of PTGs to mediate bone repair in rabbits. Six weeks after implantation, animals that received implants showed closure of bone defects and extensive growth of new bone relative to controls. Recovery was greatly improved by enclosure of the PTGs within a membrane. Unenclosed PTGs tended to exit the bone defect, leading to incomplete repair and an inflammatory response.
bone substitutes / collagen membranes / critical size defects / histomorphometry / titanium granules
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