Osseointegration of short titan implants: A pilot study in pigs.
Reduced vertical bone level in the implantation area is often considered one of the limiting factors before implant insertion. Inserting implants of reduced length might be useful in order to avoid vertical bone augmentation prior to implantation. To the present day, no official guidelines exist as to the optimal length for these implants. It is nevertheless well known that the stability of an implant depends primarily on its osseointegration, which could otherwise be influenced by modifying implant surface texture. The aim of our study was to evaluate osseointegration in correlation with implant length and surface texture. Three different variations of titan implants (n=5) were compared: two types, each with an acid-etched and ceramic blasted surface, were inserted in the upper jaw of adult female minipigs at different lengths (tioLogic ST Shorty, 5mm length; tioLogic ST, 9mm length) and were compared to a control group (tioLogic ST, 9mm length, ceramic blasted surface). Eight weeks after unloaded healing, bone tissue specimens containing the implants were processed, stained with Masson-Goldner-trichrome and analyzed histologically. Regardless of implant length and surface texture, new bone formation with no signs of inflammation could be detected in the area of the threads. Implants with a modified surface showed no statistically significant difference in bone-implant-contact (BIC) (tioLogic ST Shorty, 56.5%; tioLogic(©)ST; 77.2%), but a statistically significant difference could be found, when the 9mm implants were compared to the control group (BIC 48.9%). Surface modification could positively influence osseointegration as well as contribute to overcoming the adverse effects of length reduction.
Department of Orthodontics, University Medical Center, Technische Universität Dresden, 01307 Dresden, Germany. Electronic address: Ute.Botzenhart@uniklinikum-dresden.de.
Ute
U
Botzenhart
Department of Orthodontics, University Medical Center, Technische Universität Dresden, 01307 Dresden, Germany.
Christiane
C
Kunert-Keil
Department of Prosthodontics, Gerodontology and Biomaterials, Medical University of Greifswald, 17489 Greifswald, Germany.
Friedhelm
F
Heinemann
Department of Orthodontics, University Medical Center, Technische Universität Dresden, 01307 Dresden, Germany.
Tomasz
T
Gredes
Department of Orthodontics, University Medical Center, Technische Universität Dresden, 01307 Dresden, Germany.
Juliane
J
Seiler
Department of Orthodontics and Pediatric Dentistry, University of Szeged, 6720 Szeged, Hungary.
Ádám
Á
Berniczei-Roykó
Department of Orthodontics, University Medical Center, Technische Universität Dresden, 01307 Dresden, Germany.
Tomasz
T
Gedrange
D000134:Acid Etching, Dental; D000818:Animals; D001672:Biocompatible Materials; D002516:Ceramics; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D017267:Dental Prosthesis Design; D005260:Female; D008334:Mandible / Q000033:anatomy & histology / Q000254:growth & development; D008437:Maxilla / Q000033:anatomy & histology / Q000254:growth & development; D016348:Osseointegration; D013499:Surface Properties; D013552:Swine; D013556:Swine, Miniature; D014025:Titanium
D001672:Biocompatible Materials; D015921:Dental Implants; D014025:Titanium
Acid-etched and ceramic blasted surface; Osseointegration; Reduced length; Short implants; Shorty's; Surface modification