2010 Fiscal Year Final Research Report

The influence of immediate loading on bone around titanium implants with different surface topographies

Research Project

Project/Area Number	21791876
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Prosthetic dentistry
Research Institution	Tohoku University
Principal Investigator	SATO Naoko Tohoku University, 大学院・歯学研究科, 助教 (80510015)
Project Period (FY)	2009 – 2010
Keywords	早期荷重 / インプラント表面性状 / 骨結合
Research Abstract	To examine the interactive effects of mechanical loading and titanium surface topography on bone formation around immediately loaded implants, bone with loaded soomth(Sm) and acid-etched (AE) implants in rats were scanned by micro-CT system and removable torque test was performed. The loaded AE implants showed significantly decreased in bone mineral density of cortical bone at week 4 and contact surface area between cortical bone and the implant at week 2 compared to those for unloaded AE implants. The removable torque values for loaded Sm implants at week 1 was significantly lower than that for unloaded Sm implants although the loading didn't affect the biomechanical strength for AE implants. These suggested that different surface topography differently affected bone responses around immediately loaded implants.