Surface and biomechanical study of titanium implants modified by laser with and without hydroxyapatite coating, in rabbits.
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.
Sisti
Karin E
KE
Federal University of Mato Grosso do Sul, UFMS, Campo Grande, Brazil. karinellensisti@hotmail.com
de Rossi
Rafael
R
Antoniolli
Andreia M Brochado
AM
Aydos
Ricardo D
RD
Guastaldi
Antonio C
AC
Queiroz
Thallita P
TP
Garcia
Idelmo R
IR
Piattelli
Adriano
A
Tavares
Hewerson S
HS
D000134:Acid Etching, Dental / Q000379:methods; D000818:Animals; D001696:Biomechanical Phenomena; D040761:Biomimetic Materials / Q000737:chemistry; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D045662:Dental Etching / Q000379:methods*; D015921:Dental Implants; D003764:Dental Materials / Q000737:chemistry* / Q000528:radiation effects; D017886:Durapatite / Q000737:chemistry*; D007834:Lasers; D008297:Male; D008855:Microscopy, Electron, Scanning; D016348:Osseointegration / Q000502:physiology; D011817:Rabbits; D017640:Silicates / Q000737:chemistry; D012972:Sodium Hydroxide / Q000737:chemistry; D013499:Surface Properties; D013696:Temperature; D013977:Tibia / Q000601:surgery; D013997:Time Factors; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects; D019415:Torque; D014961:X-Ray Diffraction
D020099:Coated Materials, Biocompatible; D015921:Dental Implants; D003764:Dental Materials; D017640:Silicates; D012972:Sodium Hydroxide; D017886:Durapatite; D014025:Titanium; C005691:sodium silicate