Enhanced corrosion, tribocorrosion resistance and controllable osteogenic potential of stem cells on micro-rippled Ti6Al4V surfaces produced by pulsed laser remelting

Additive Manufacturing in Orthopedics: A Review

“…152−154 Mukherjee et al performed laser remelting of Ti6Al4V surfaces using a longpulse laser to generate microfeatures with different feature sizes. 155 The resulting surface has better corrosion and tribocorrosion resistance and enables stem cells to differentiate into the osteoblastic lineage rather than the acid-etched surface. This work demonstrates the use of pulsed laser remelting as a simple but potentially effective route to fabricate Ti6Al4V orthopedic implants with improved biological functions.…”

“…Surfaces polished by high-energy lasers favor fatigue behavior and osteoblast differentiation . Numerous studies have confirmed the benefits of laser polishing for the production of high-performance, additively manufactured metal implants, including improvements to roughness, porosity, fatigue behavior, and biocompatibility. − Mukherjee et al performed laser remelting of Ti6Al4V surfaces using a long-pulse laser to generate microfeatures with different feature sizes . The resulting surface has better corrosion and tribocorrosion resistance and enables stem cells to differentiate into the osteoblastic lineage rather than the acid-etched surface.…”

Influence of Laser Modification on the Surface Character of Biomaterials: Titanium and Its Alloys—A Review

“…Mukherjee et al, 2021 [78] In this paper, the laser modification of titanium alloy Ti6Al4V using a Yb-doped fiber laser was carried out. It was shown that the surface produced by the laser was anisotropic, which revealed that the contact angle for water was different for a parallel and perpendicular incidence of a drop on the surface.…”

“…The references of [62,74,82,83] indicate that laser-modified surfaces can exhibit anisotropic as well as isotropic properties depending on the laser operating parameters [69]. The anisotropy of a surface is more favorable due to its higher wettability than for isotropic surfaces and the contact angles for anisotropic surfaces will be different for parallel and perpendicular directions [70,78,85]. Surface modification resulting in an anisotropic surface is very important for the ability to control the wettability of materials [69], and in addition, due to the medical use of titanium and its alloys, the development of an anisotropic surface is beneficial because of improved osseointegration conditions [47].…”

Picosecond laser‐induced hybrid groove structures on Ti‐6Al‐4V bio‐alloy to accelerate osseointegration

“…Several techniques such as blasting, texturing, lithography, and chemical etching have been explored to alter the surface behavior of biomaterials. 6 However, blasting and chemical etching lead to uncontrolled patterning and surface contamination 7 while lithography is a mask based laborious process involving many steps. 8 Laser-induced surface patterning/texturing is not only devoid of any of these disadvantages but has fascinated researchers with its unique advantages of remote, single step, non-contact and fast processing capabilities.…”