title: Long-term evaluation of sandblasted and acid-etched implants used as orthodontic anchors in dogs.
abstract: The aim of this study was the clinical, radiographic, and histologic evaluation of the tissue surrounding SLA (sandblasted and acid-etched) implants loaded with a continuous and constant force for 52 weeks, after a healing period of 6 weeks, after implant insertion. SLA implants were placed in the maxilla of 3 dogs and the mandible of 5 dogs after a 12-week healing period after extraction. Abutments were attached to the 6 test implants (2 in the maxilla, 4 in the mandible). Superelastic nickel-titanium coil springs were activated between the SLA implants and the canines, producing a force of 200 g (2 N). Two unloaded implants (1 in the maxilla, 1 in the mandible) served as controls. Histologic analysis showed a corticalization of bone trabeculae, thicker at the loaded than at the unloaded implants. New bone formation at the level of the crest was slightly superior in the test implants. A difference between the tension and compression areas could not be observed in the test implants. The mean bone-implant contact values of the test implants for the maxilla and mandible were 40.23% and 49.33%, respectively. In the control implants, the bone-implant contact value was 67.91% for the maxilla and 49.23% for the mandible. SLA implants can be used as an anchorage unit with confidence, in spite of a short healing period and a prolonged force application. Further studies with different force magnitudes and healing periods are required to clarify the effects of healing period and force magnitude on bone quality and quantity.
authors.affiliation: Department of Periodontology, Faculty of Dentistry, University of Ondokuz Mayis, Samsun, Turkey.
authors.forename: Musa
authors.initials: M
authors.lastname: Aldikaçti
authors.forename: Gökhan
authors.initials: G
authors.lastname: Açikgöz
authors.forename: Tamer
authors.initials: T
authors.lastname: Türk
authors.forename: Paolo
authors.initials: P
authors.lastname: Trisi
mesh_terms: D000134:Acid Etching, Dental; D000818:Animals; D000044:Dental Abutments; D003722:Dental Alloys; D045662:Dental Etching; D015921:Dental Implants; D004285:Dogs; D008297:Male; D008334:Mandible / Q000473:pathology / Q000601:surgery; D008437:Maxilla / Q000473:pathology / Q000601:surgery; D009532:Nickel; D016382:Orthodontic Appliance Design; D009967:Orthodontic Appliances; D009969:Orthodontic Wires; D016348:Osseointegration / Q000502:physiology; D010012:Osteogenesis / Q000502:physiology; D013499:Surface Properties; D013997:Time Factors; D014025:Titanium; D014087:Tooth Movement Techniques / Q000295:instrumentation; D016474:Weight-Bearing
chemical_list: D003722:Dental Alloys; D015921:Dental Implants; C040654:titanium nickelide; D009532:Nickel; D014025:Titanium