Development of radiolucent biodegradable material for sinus floor bone augmentation

本研究的目的是开发一种材料，用来观察上颌窦成骨过程中的新骨形成。上颌后牙颊侧骨窗打开，上颌窦膜隆起。生物可吸收接骨板(Fixorb)放置在窦膜下，并固定在靠近骨窗的骨上。术后6个月，放射学观察骨形成情况。我们对10例患者13个部位的19个种植体进行了放射学检查，这些患者的平均年龄为62.2岁，他们在没有植入材料的情况下接受了鼻窦提升手术。在所有病例中，种植体周围骨形成，未见鼻窦炎。当骨骼表面产生空间时，就形成了骨骼。因此，我们开发了一种新的装置，用它抬高骨膜，在兔头上产生新的骨。此外，当我们用硅胶膜完全覆盖这个装置时，所有的空间都被新生骨填充。我们将这种新方法命名为“可扩展GBR”。

The purpose of the present study was to develop a material, with which we can observe new bone formation in maxillary sinus bone augmentation. Bony window at the buccal side of posterior maxillawas opened and maxillary sinus membrane was elevated. The bio-resorbable plate (fixorb) was placedunder the sinus membrane and fixed to the bone close to the bony window. Six months after the surgerybone formation was radiologically observed. We radiologically examined 19 implants at 13 sites of 10patients, average age 62.2 years old, who received sinus lift without graft material. In all cases bone wasformed around the implants and sinusitis was not observed. Bone is formed when space is produced onthe bone surface. Thus, we developed a new device, with which we elevated the periosteum, producingnew bone on the head of the rabbit. Furthermore, when we completely covered this device with a siliconmembrane, all the space was filled with new bone. We named this new method "expansible GBR".