Clinical and radiographic evaluation of early loaded free-standing dental implants with various coatings in beagle dogs

• Published in: The Journal of prosthetic dentistry 1999-10, Vol.82 (4), p.428-435
• Main Authors: Corso, Marco, Sirota, Craig, Fiorellini, Joseph, Rasool, Faheem, Szmukler-Moncler, Serge, Weber, Hans-Peter
• Format: Article
• Language: English
• Subjects: Analysis of Variance; Animals; Coated Materials, Biocompatible; Crowns - statistics & numerical data; Dental Implantation, Endosseous - methods; Dental Implantation, Endosseous - statistics & numerical data; Dentistry; Diagnosis, Oral - instrumentation; Diagnosis, Oral - statistics & numerical data; Dogs; Durapatite; Female; Mastication; Percussion - instrumentation; Percussion - statistics & numerical data; Pilot Projects; Prognosis; Radiography, Dental - statistics & numerical data; Random Allocation; Time Factors; Titanium
• ISSN: 0022-3913; 1097-6841
• DOI: 10.1016/S0022-3913(99)70029-6

Statement of problem. Immediate loading of implants may be a predictable treatment alternative when cross-arch stabilization with a fixed provisional is observed. Purpose. This study investigated the effect of immediate masticatory loading on the stability of single-standing dental implants with 4 different surfaces. Material and methods. A total of 40 solid screw implants (diameter 3.3 mm, length 8 mm) were placed in the mandibles of 4 beagle dogs. Test groups included 3 hydroxyapatite (HA) coatings of titanium plasma-sprayed (TPS) implants. Implants with TPS alone served as control. Gold crowns were inserted 2 days after implant placement and the dogs were immediately put on a hard food diet. Implants were followed for 6 months after loading. Clinical and radiographic assessments of implants were performed at time of crown insertion (baseline) and after 1, 3, and 6 months of loading. The Periotest instrument was used for mobility measurements and radiographs were obtained for evaluation of peri-implant radiolucency and measurement of crestal bone changes. Results. Of 40 implants, 39 displayed no discernible mobility, corresponding to successful clinical function. Peri-implant radiolucencies were absent for all but the 1 mobile implant. The reduction in crestal bone levels adjacent to the implants between baseline and 6 months was statistically significant ( P