Histomorphometric analysis and removal torque of small diameter implants with alternative surface treatments and different designs.
This study was designed to investigate the histomorphometric and biomechanical comparison of small-diameter implants with different designs. These implants can be placed surgically in narrow bone spaces, such as the lower incisor region, that have low occlusal loading. Specimens of screw-shaped pin implants were designed for the study. These specimen implants were divided into 6 groups: group 1, machined implants; group 2, resorbable blast media (RBM)-treated implants; group 3, machined implants with a long vertical groove; group 4, RBM-treated implants with a long vertical groove; group 5, RBM-treated implants with a vertical groove on the upper thread; and group 6, RBM-treated implants with a vertical groove on the lower trunk. The specimen implants were placed surgically on the medial side of the rabbit tibia. Animals were sacrificed 2, 4, and 8 weeks after surgery. The removal torque was measured and tissues were prepared for histologic and histomorphometric analysis. The bone-to-implant contact and the percentage of the bone area inside the threads were measured. RBM-treated implants with vertical groove groups showed significantly higher values of removal torque, bone-implant contact, and bone area rate than the ones of machined surface groups.
Ahn
Su-Jin
SJ
Department of Biomaterials and Prosthodontics, East-West Neo Medical Center, Kyung Hee University School of Dentistry, Seoul, Korea.
Leesungbok
Richard
R
Lee
Suk-Won
SW
D000818:Animals; D020099:Coated Materials, Biocompatible; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D017267:Dental Prosthesis Design; D020878:Device Removal; D020007:Implants, Experimental; D008297:Male; D008904:Miniaturization; D016348:Osseointegration; D011817:Rabbits; D013499:Surface Properties; D013977:Tibia / Q000601:surgery; D019415:Torque
D020099:Coated Materials, Biocompatible; D015921:Dental Implants