Threaded versus porous-surfaced implants as anchorage units for orthodontic treatment: Three-dimensional finite element analysis of peri-implant bone tissue stresses
| dc.creator | Pilliar, Robert M. | |
| dc.creator | Sagals, Genadijs | |
| dc.creator | Meguid, Shaker A. | |
| dc.creator | Oyonarte, Rodrigo | |
| dc.creator | Deporter, Douglas A. | |
| dc.date | 2006 | |
| dc.date.accessioned | 05-01-2026 18:13 | |
| dc.date.available | 05-01-2026 18:13 | |
| dc.description | <p>Purpose: A 3-dimensional finite element model was developed to investigate the cause of different crestal bone loss patterns observed around sintered porous-surfaced and machined (turned) threaded dental implants used for orthodontic anchorage in a previously reported animal study. Materials and Methods: Twenty-noded structural solid elements with parabolic interpolation between nodes were used for modeling the bone-implant interface zone. A 3-N traction force acting between either 2 porous-surfaced or 2 machined threaded implants placed in canine premolar mandibular sites and bone profiles observed at initiation and 22 weeks of orthodontic loading were modeled. Results: Higher maximum stresses in peri-implant bone next to the coronal region of the implants were predicted with the machined threaded implants at both the initial and final time points, with the values 20% greater than those predicted after the 22-week loading period. These values were approximately 200% greater than those predicted for the porous-surfaced implants, for which a more uniform stress distribution was predicted. Discussion: The finite element model results indicated that the observed greater retention of crestal bone next to the porous-surfaced implants was attributable to lower peak stresses developing in crestal peri-implant bone with this design, which decreased the probability of bone loss related to local overstressing and bone microfracture. Conclusion: The predicted lower stresses were a result of the more uniform transfer of force from implant to bone with the porous-surfaced implants, which was a consequence of the interlocking of bone and implant possible with this design.</p> | eng |
| dc.identifier | https://investigadores.uandes.cl/en/publications/725f64ae-11ce-424f-9054-433f5a17f668 | |
| dc.language | eng | |
| dc.rights | info:eu-repo/semantics/restrictedAccess | |
| dc.source | vol.21 (2006) nr.6 p.879-889 | |
| dc.subject | Crestal bone loss | |
| dc.subject | Finite element analysis | |
| dc.subject | Implant surfaces | |
| dc.title | Threaded versus porous-surfaced implants as anchorage units for orthodontic treatment: Three-dimensional finite element analysis of peri-implant bone tissue stresses | eng |
| dc.type | Article | eng |
| dc.type | Artículo | spa |