Surgical Tooth Implants, Combat and Field.
Abstract
Long term implant studies of alumina tooth roots are being performed in both humans and baboons. The implants designed for this project are single root elliptical and rectangular designs with serrations arranged for maximal stress distribution of occlusal loads. The implant is of a three-piece design. Roots are produced by grinding bisque fired alumina stock on a computer controlled milling machine. This technique provides high quality, high strength, and design flexibility. A series of sixteen graded sizes of implants have been produced. Extensive quality assurance has been performed on the implants intended for human implant. Quality assurance procedures include: wet densities, radiography, visual inspection and mechanical testing of test bars. The quality of alumina root has consistently improved throughout this project. Implants have been followed in the baboon colony for three years. 'Success' continues to be at the same level as reported in the previous year. The 'success' rate this year for roots ingrown and in function has been 92%. Failure of roots usually occurs during the initial 3-month ingrowth period. This ingrowth period is most crucial to the overall success of the implant. The three piece design as well as the wide variety of available sizes assists in minimizing loss during the ingrowth period.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1978
- Accession Number
- ADA067740
Entities
People
- Craig R. Hassler
- Gary L. Messing
- Orville E. Russell
- Robert H. Downes
Organizations
- Battelle Memorial Institute