| 2081 Mini Dental Implants in Human Long-Term Fixed Prosthetic Function | ||
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B.E. BALKIN, J.H. DIAZ, J. YANG, and T.E. RAMS, Temple University School of Dentistry, Philadelphia, PA, USA Objectives: Small 1.8 mm diameter screw dental implants were originally employed for transitional anchorage of provisional dental prosthesis for periods of only several months after their surgical placement. This pilot study examined the outcome with digital subtraction radiography of human mini dental implants subjected to long-term fixed prosthetic function over at least three years following their immediate loading after surgical placement. Methods: 14 mini titanium screw implants were surgically inserted with an auto-advance technique in three systemically-healthy adults, and then immediately loaded with fixed prosthetic bridges. Periapical radiographs of each mini implant taken at surgical placement and at least three years post-treatment were analyzed for changes in crestal alveolar bone mass using an FDA-approved, computer-assisted, digital subtraction radiography program (DSR™, Electro Medical Systems, Richardson, TX), which compensated for geometric projection and film contrast differences between pairs of radiographic images prior to their subtraction. A board-certified oral radiologist independently scored generated digital subtraction images at 27 proximal surfaces on the 14 mini implants as either exhibiting a gain, no change, or a loss in crestal alveolar bone mass over the three-year period subsequent to their immediate fixed prosthetic loading and function. Results: None of the mini implants were lost over the three-year observation period. 8 (29.6%) mini implant surfaces exhibited a gain, 18 (66.7%) no change, and 1 (3.7%) a loss in crestal alveolar bone mass in the scored digital subtraction radiographic images. Conclusions: These preliminary observations demonstrate that human mini dental implants subjected to immediate fixed prosthetic loading and function for at least three years survived and exhibited a remarkably high degree of stability in crestal alveolar bone mass. Further research is indicated on the capability of mini dental implants to successfully anchor fixed bridge restorations over extended periods after their surgical placement and immediate prosthetic loading. | ||
| Seq #231 - Clinical Research 2:00 PM-4:00 PM, Friday, 11 March 2005 Baltimore Convention Center Exhibit Hall E-F | ||
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