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Volume 19 , Issue 4
July/August 2004

Pages 524533

Immediate Loading with Fixed Screw-Retained Provisional Restorations in Edentulous Jaws: The Pickup Technique

German O. Gallucci, DMD/Jean-Pierre Bernard, PD Dr Med, MD/Michel Bertosa, CDT/Urs C. Belser, Prof Dr Med Dent, DMD

PMID: 15346749

Purpose: This article describes (a) an immediate loading technique in the treatment of edentulous arches with screw-retained provisional restorations and (b) the effort to determine whether the described technique is compatible with the predictable achievement of osseointegration. Materials and Methods: Eight patients with either 1 or 2 edentulous arches were treated. A diagnostic tooth arrangement was carried out for each patient and was then duplicated twice to fabricate a provisional template and a surgical guide. Six to 10 solid-screw ITI implants were placed around the dental arch to reach the first molar regions. On the same day, all patients received splinted metal-free screw-retained provisional restorations according to the pickup technique. The provisional prostheses were retrieved every 2 weeks during the healing phase. Results: Seventy-eight implants were placed in 11 edentulous arches. Two implants were not immediately loaded because of inadequate primary stability. In an 8- to 20-month follow-up period (mean 14 months), two 8-mm implants were lost after 5 weeks of functional loading, resulting in an overall survival rate of 97.4%. All implants were assessed by resonance frequency analysis. After 4 months of functional loading, the mean implant stability quotient was 60 4.1 units (range 51 to 72 ISQ units) for maxillary implants and 65 6.5 units (range 47 to 74 ISQ units) for mandibular implants. Discussion and Conclusion: The immediate loading of implants placed in edentulous arches with screw-retained 1-piece (cross-arch) provisional restorations does not appear to jeopardize the achievement of osseointegration. Neither the metal-free design of the provisional prostheses nor the removal of the provisional prostheses during the healing phase adversely affected osseointegration. The pickup technique for immediate provisionalization represents a reproducible treatment option. INT J ORAL MAXILLOFAC IMPLANTS 2004;19:524533

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