| 2080 Maxillary ITI Implants Placed in Combination with Sinus Mucosa Elevation | ||
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P.A. ADRIAENS, M. VAN ASCH, and L.M. ADRIAENS, International Center for Period. & Oral Implants, Brussels, Belgium Objectives: to evaluate clinical and radiological findings for ITI endosseous implants installed in posterior maxillary segments with compromised bone height and necessitating maxillary sinus mucosa elevation. Methods: 578 consecutive posterior maxillary sites (242 patients) receiving ITI dental implants were included. 64 sites (11%) in 46 patients needed elevation of the maxillary sinus mucosa combined with implant installation. The implant installation in these compromised sites included local anaesthesia, mid-crestal incision and minimal flap reflection, osteotomy of implant sites with adapted pilot drills until reaching the cortical bone of the maxillary sinus floor, infracture of the bottom of the implant site using osteotomes with adapted diameter, sinus floor mucosa elevation with stepwise insertion of a mixture of autologous bone chips and bone substitute material (Bio-Oss Spongiosa 0.25-1 mm particles, Geistlich Pharma AG, Wolhusen) followed by implant installation. Flap closure left all implants in a transmucosal configuration. Results: The age of the patients (78% females) was 59 ± 10 years (mean ± standard deviation). Implants were in function since 31 ± 15 months. 83% of these implants were 10 mm in length. 44 ± 22% of the implant length was placed in grafted material inserted during sinus mucosa elevation. Radiographic evaluation showed full coverage of the intra-sinus portion of the implant with graft material for 85% of these implants. The average time before successful abutment installation with 35 Ncm torque force was 6.0 ± 4.3 months. Four implants (6.25%) were placed in smokers. Two implants (3.1%) placed in non-smoking patients failed at 1 and 8 months, respectively. Both were early failures since they occurred prior to abutment installation. Conclusion: The prognosis for ITI implants installed in the posterior maxillary segment in combination with sinus mucosa elevation is comparable to the prognosis for implants placed in native maxillary bone. | ||
| 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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