title: Importance of the Roughness and Residual Stresses of Dental Implants on Fatigue and Osseointegration Behavior. In Vivo Study in Rabbits.
abstract: This study focuses on the fatigue behavior and bone-implant attachment for the more usual surfaces of the different CP-titanium dental implants. The implants studied were: as-received (CTR), acid etching (AE), spark-anodization (SA), and with a grit-blasted surface (GB). Residual stresses were determined by means of X-ray diffraction. The fatigue tests were carried out at 37°C on 160 dental implants, and the stress-failure (S-N) curve was determined. The fatigue tests showed that the grit-blasting process improved fatigue life. This is a consequence of the layer of compressive residual stresses that the treatment generates in titanium surfaces. Further, our aim was to assess and compare the short- and midterm bone regenerative potential and mechanical retention of the implants in bone of New Zealand rabbits. The mechanical retention after 4 and 10 weeks of implantation was evaluated with histometric and pull-out tests, respectively, as a measure of the osseointegration of the implants. The results demonstrated that the GB treatment produced microrough that accelerated bone tissue regeneration and increased mechanical retention in the bone bed at short periods of implantation in comparison with all other implants tested. The GB surface produced an improvement in mechanical long-time behavior and improved bone growth. These types of treated implants can have great potential in clinical applications, as evidenced by the outcomes of the current study.
authors: 1   Master de Implantología, Facultad de Odontología, Universidad de Sevilla, Spain.
authors: Eugenio
authors: E
authors: Velasco
authors: 1   Master de Implantología, Facultad de Odontología, Universidad de Sevilla, Spain.
authors: Loreto
authors: L
authors: Monsalve-Guil
authors: 1   Master de Implantología, Facultad de Odontología, Universidad de Sevilla, Spain.
authors: Alvaro
authors: A
authors: Jimenez
authors: 1   Master de Implantología, Facultad de Odontología, Universidad de Sevilla, Spain.
authors: Iván
authors: I
authors: Ortiz
authors: 1   Master de Implantología, Facultad de Odontología, Universidad de Sevilla, Spain.
authors: Jesús
authors: J
authors: Moreno-Muñoz
authors: 1   Master de Implantología, Facultad de Odontología, Universidad de Sevilla, Spain.
authors: Enrique
authors: E
authors: Nuñez-Marquez
authors: 2   Dept. Ciència dels Materials i Enginyería Metal.lúrgica, E.T.S. Enginyeria Industrial, Universitat Politècnica de Cataluña, Barcelona, Spain.
authors: Marta
authors: M
authors: Pegueroles
authors: 3   School of Dentistry, Universitat Internacional de Catalunya, Barcelona, Spain.
authors: Román A
authors: RA
authors: Pérez
authors: 3   School of Dentistry, Universitat Internacional de Catalunya, Barcelona, Spain.
authors: Francisco Javier
authors: FJ
authors: Gil
mesh_terms: D000818:Animals; D001861:Bone Regeneration; D015921:Dental Implants; D016348:Osseointegration; D011817:Rabbits; D013314:Stress, Mechanical; D013499:Surface Properties; D014025:Titanium
chemical_list: D015921:Dental Implants; D014025:Titanium
keywords: Titanium; dental implants; fatigue resistance; osseointegration; residual stresses; shot blasting