Piattelli A, Manzon L, Scarano A, Paolantonio M, Piattelli M
Dental School, University of Chieti, Italy.
Int J Oral Maxillofac Implants. 1998 Nov-Dec;13(6):805-10.
The aim of this study was to make a comparative analysis between the bone response to machined and sandblasted implants. The sandblasting was done with 150-microns aluminum oxide particles. Under scanning electron microscopic examination, the machined implants presented typical machining grooves, while a very rough, highly irregular surface with depressions and indentations was present on the sandblasted implants. Light microscopy showed a different bone growth pattern on machined (implantopetal growth) and sandblasted (implantofugal growth) implants. No negative effects on the rate of bone growth were observed in spite of the presence of aluminum ions. The histomorphometric analysis showed that sandblasted implants presented, from the third week onwards, a significantly higher contact percentage (P < .0001). These values could point to higher osteoconductivity as a result of the higher surface roughness of sandblasted surfaces.
本研究的目的是对机械加工种植体和喷砂处理种植体的骨反应进行对比分析。喷砂处理采用150微米的氧化铝颗粒。在扫描电子显微镜检查下，机械加工种植体呈现出典型的加工沟槽，而喷砂处理种植体表面则非常粗糙、高度不规则，有凹陷和压痕。光学显微镜显示，机械加工种植体（向心性生长）和喷砂处理种植体（离心性生长）上的骨生长模式不同。尽管存在铝离子，但未观察到对骨生长速率有负面影响。组织形态计量学分析表明，从第三周起，喷砂处理种植体的接触率显著更高（P <.0001）。这些数值可能表明，由于喷砂表面具有更高的粗糙度，其骨传导性更高。
