title: 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.
authors.affiliation: Federal University of Mato Grosso do Sul, UFMS, Campo Grande, Brazil. karinellensisti@hotmail.com
authors.forename: Karin E
authors.initials: KE
authors.lastname: Sisti
authors.forename: Rafael
authors.initials: R
authors.lastname: de Rossi
authors.forename: Andreia M Brochado
authors.initials: AM
authors.lastname: Antoniolli
authors.forename: Ricardo D
authors.initials: RD
authors.lastname: Aydos
authors.forename: Antonio C
authors.initials: AC
authors.lastname: Guastaldi
authors.forename: Thallita P
authors.initials: TP
authors.lastname: Queiroz
authors.forename: Idelmo R
authors.initials: IR
authors.lastname: Garcia
authors.forename: Adriano
authors.initials: A
authors.lastname: Piattelli
authors.forename: Hewerson S
authors.initials: HS
authors.lastname: Tavares
mesh_terms: 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
chemical_list: D020099:Coated Materials, Biocompatible; D015921:Dental Implants; D003764:Dental Materials; D017640:Silicates; D012972:Sodium Hydroxide; D017886:Durapatite; D014025:Titanium; C005691:sodium silicate