title: A histometric comparison of smooth and rough titanium implants in human low-density jawbone.
abstract: The aim of this investigation was to conduct a comparative histometric analysis of bone-implant interface between a rough titanium surface and smooth implants in low-density human jawbone after 3, 6, and 12 months of submerged, undisturbed healing. Six adult volunteer patients undergoing standard implant placement were enrolled in this project. Each patient received 1 smooth and 1 rough implant. After 3, 6, and 12 months, the implants were harvested for histometric analysis. The values of bone-implant contact were the following: 3 months smooth 6.2%, 3 months rough 58.9%, 6 months smooth 3.55%, 6 months rough 72.9%, 12 months smooth 6.7%, and 12 months rough 76.75%. The results showed that in low-density bone the rough surface dramatically enhanced the amount of bone-to-implant contact. Because of the small number of implants examined, definite conclusions cannot be drawn, even though the statistical analysis showed significant differences between the smooth and rough groups (P = .0129; F = 76.065). Nevertheless, a trend was evident in these observations: while a rough implant surface may enhance the rate of osseointegration, it is not able to significantly change the bone density, and an implant placed low-density bone is at a higher risk of failure when occlusal loading begins.
authors.affiliation: Biomaterials Clinical Research Association, Pescara, Italy. paulbioc@tin.it
authors.forename: P
authors.initials: P
authors.lastname: Trisi
authors.forename: W
authors.initials: W
authors.lastname: Rao
authors.forename: A
authors.initials: A
authors.lastname: Rebaudi
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D001732:Bite Force; D015519:Bone Density; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D017267:Dental Prosthesis Design; D019232:Dental Restoration Failure; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008334:Mandible / Q000473:pathology* / Q000601:surgery; D016348:Osseointegration; D010012:Osteogenesis; D012307:Risk Factors; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: D015921:Dental Implants; D014025:Titanium