A comparative study of osseointegration of titanium implants in autogenous and freeze-dried bone grafts. 1998

K J Pansegrau, and K L Fridrich, and D Lew, and J C Keller
University of Iowa, Iowa City, USA.

OBJECTIVE This study was undertaken to compare the rate and degree of osseointegration of dental implants when placed into either autogenous corticocancellous chip or freeze-dried corticocancellous chip bone grafts. METHODS The canine ilium was used as the model site. Thirty experimental and 15 control implants were placed in 15 dogs: autogenous versus freeze-dried corticocancellous chip bone grafts around the exposed implant surfaces. In addition to the placement of control implants, the apical portion of the grafted implants acted as their own control. The implants were harvested at 1, 2, and 3 months. The evaluation of the integration process was performed by means of light microscopy, microradiography, and histomorphometry. RESULTS Using this model, the results indicate that at 1 month there was no statistical difference in the degree of osseointegration in the two bone grafts. At 2 months, there was a statistically greater degree of osseointegration noted in the autogenous corticocancellous chip sites than in the freeze-dried bone grafts. At 3 months, the degree of osseointegration in the two groups was 70% and 33%, respectively. At 3 months, there was virtually 100% integration with trabecular bone at the control implant sites. CONCLUSIONS The results indicate that at 2 months postoperatively implants placed in an autogenous bone chip graft osseointegrate to a significantly greater degree than implants placed in a freeze-dried bone chip graft, and this difference remains at 3 months.

UI MeSH Term Description Entries
D007085 Ilium The largest of three bones that make up each half of the pelvic girdle. Auricular Surface of Ilium,Iliac Crest,Iliac Crest Bone,Iliac Fossa,Bones, Iliac Crest,Crest Bone, Iliac,Crest Bones, Iliac,Crest, Iliac,Crests, Iliac,Fossa, Iliac,Iliac Crest Bones,Iliac Crests,Iliums
D004285 Dogs The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065) Canis familiaris,Dog
D005612 Freeze Drying Method of tissue preparation in which the tissue specimen is frozen and then dehydrated at low temperature in a high vacuum. This method is also used for dehydrating pharmaceutical and food products. Lyophilization,Drying, Freeze,Dryings, Freeze,Freeze Dryings,Lyophilizations
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D014025 Titanium A dark-gray, metallic element of widespread distribution but occurring in small amounts with atomic number, 22, atomic weight, 47.867 and symbol, Ti; specific gravity, 4.5; used for fixation of fractures.
D014182 Transplantation, Autologous Transplantation of an individual's own tissue from one site to another site. Autografting,Autologous Transplantation,Autotransplantation,Autograftings,Autologous Transplantations,Autotransplantations,Transplantations, Autologous
D016025 Bone Transplantation The grafting of bone from a donor site to a recipient site. Grafting, Bone,Transplantation, Bone,Bone Grafting
D016348 Osseointegration The growth action of bone tissue as it assimilates surgically implanted devices or prostheses to be used as either replacement parts (e.g., hip) or as anchors (e.g., endosseous dental implants). Peri-implant Endosseous Healing,Endosseous Healing, Peri-implant,Endosseous Healings, Peri-implant,Healing, Peri-implant Endosseous,Healings, Peri-implant Endosseous,Peri implant Endosseous Healing,Peri-implant Endosseous Healings

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