3-dimensional interconnected nano-porosity
The Nanopore™ surface with its calcium deposits and 3-dimensional interconnecting nano-porosity comes as close to nature as possible. The SEM picture of the surface bears a striking resemblance to and almost mirrors the microstructure of human cancellous bone. This unique surface topography provides an optimized osteoconductive environment for mechanical interlocking by bone apposition.
calcium reinforced surface chemistry
The reinforcement of osseointegration with Nanopore™ is influenced by two primary factors which are mechanical interlocking and chemical bonding.
The moderately rough surface with 3-dimensional interconnecting porosities provide the osteoconductive characteristics to enhance mechanical interlocking of bone onto the implant surface. The chemical bonding is derived from the calcium deposited surface chemistry characteristic of Nanopore™. These two factors contribute to the documented enhanced osseointegration values of the Nanopore™ surface during development at the University of Gothenburg in Sweden*.
These mechanical and chemical bonding characteristics provide a greater degree of primary stability to the implant, thereby allowing for early or immediate loading in select indications.
*(Dept of Biomaterial Sciences/Handicap Research, institute for Surgical Sciences, Faculty of Medicine, University of Gothenburg, Sweden Gothenburg
optimized surface roughness
In a review* focusing on topographic and chemical properties of different implant surfaces, moderately rough surfaces such as the Nanopore™ surface showed stronger bone response than relatively smoother or rougher surfaces. Rough surfaces such as the aggressively etched and blasted or the plasma sprayed surfaces have an increased incidence of peri-implantitis due to the increased risk of retaining bacteria when exposed to the oral environment.
*(Albrektsson T, Wennerberg A. Oral implant surfaces: Part 1-Review focusing on topographic and chemical properties of different surfaces and in vivo response to them. Int J Prosthodont 2004;17:536-543.
Albrektsson T, Wennerberg A. Oral implant surfaces: Part 1-Review focusing on clinical knowledge of different surfaces.Int J Prosthodont 2004;17:544-564.)