Surface and Biomechanical Study of Titanium Implants Modified by Laser With and Without Hydroxyapatite Coating, in Rabbits

Abstract

Surface and biomechanical analysis of titanium implant surfaces modified by laser beam with and without hydroxyapatite. Titanium implants with 3 different surfaces were inserted into the tibias of 30 rabbits: group I (GI) machined surface (control group), group II irradiated with laser (GII), and group III irradiated with laser and hydroxyapatite coating applied-biomimetic method (GIII). Topographical analysis with scanning electron microscopy was made before surgery in the tibia. These rabbits were distributed into 2 periods of observation: 4 and 8 weeks postsurgery, after which biomechanical analysis (removal torque) was conducted. Statistical analysis used the Student-Newman-Keuls method. Surface showed roughness in GII and GIII. Biomechanical analysis demonstrated values with significant differences in GII and GIII. Titanium implants modified by laser irradiation can increase osseointegration during the initial phase.

Commercially pure titanium implants with surfaces modified by laser beam with and without chemical deposition of apatite. Biomechanical and topographical analysis in rabbits

“…; Wennerberg & Albrektsson ; Sisti et al. ). Moreover, the better results obtained with these surfaces were not only due to the topographic pattern, but also due to physicochemical properties, as shown by EDX that revealed peaks of Ca and P for HAB and HABT.…”

Skeletal stem cell and bone implant interactions are enhanced by LASER titanium modification

“…In the current study we demonstrate the efficacy of LASER irradiation of titanium to generate a surface to improve skeletal stem cell function. LASER irradiation has been shown to be a promising method for Ti surface treatment, increasing the Ti surface area, wettability and, critically, offering a high degree of surface purity at relatively low cost [11,12,19]. Furthermore, studies with LASER-modified materials implanted in rabbit tibias and subsequently presenting high removal torques [11,12,19] and properties that favour cell adhesion and proliferation make this an attractive approach [10,20].…”

“…LASER irradiation has been shown to be a promising method for Ti surface treatment, increasing the Ti surface area, wettability and, critically, offering a high degree of surface purity at relatively low cost [11,12,19]. Furthermore, studies with LASER-modified materials implanted in rabbit tibias and subsequently presenting high removal torques [11,12,19] and properties that favour cell adhesion and proliferation make this an attractive approach [10,20]. We have previously shown that the topography of a Ti LASERmodified surface displays distinct topographies including a surface roughness with an appearance comparable to a "cauliflower" morphology that provide enhanced wettability and surface area [6].…”

“…As recently detailed in a number of studies, LASER treatment appears to provide a promising method for Ti implant generation, resulting in enhance and rapid onset of osseointegration [6,10,11,12,13].…”

“…180 Ti rods were cut into 8mm diameter by 2 mm long cylinders, and the surfaces of 90 discs were modified by LASER beam as described previously [6,11,18]. All samples were sterilized by ethylene oxide.…”