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The International Journal of Oral & Maxillofacial Implants



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Int J Oral Maxillofac Implants 27 (2012), Nr. 5     15. Sep. 2012
Int J Oral Maxillofac Implants 27 (2012), Nr. 5  (15.09.2012)

Seite 1199-1204, PubMed:23057034, Sprache: Englisch

Immediate Loading of Maxillary Prostheses Using Flapless Surgery, Implant Placement in Predetermined Positions, and Prefabricated Provisional Restorations. Part 2: A Retrospective 10-Year Clinical Study
Rocci, Antonio / Rocci, Marta / Scoccia, Andrea / Martignoni, Massimiliano / Gottlow, Jan / Sennerby, Lars
Purpose: Immediate loading has become a widely reported practice in implant dentistry. The aim of this study is to report on the 10-year clinical and radiographic outcomes of an immediate-loading treatment protocol that included flapless surgery.
Materials and Methods: Forty-six patients were treated with 97 immediately loaded Mk IV implants (Nobel Biocare) with machined surface in the maxilla. Presurgically, a three-dimensional model of each patient's soft tissue and underlying alveolar bone anatomy was created and a surgical template was fabricated. A circular mucotome was used to punch out a 5-mm hole in the mucosa to avoid flap elevation. Control examinations were performed on the day of surgery and at 1, 2, 3, 6, 8, and 10 years after surgery.
Results: All prepared implant sites had intact buccal and lingual bone walls. The prefabricated provisional restorations showed excellent fit. Nine implants failed within 8 weeks of loading, resulting in a cumulative survival rate of 91% after 10 years of loading. The survival rates were 94% for implants supporting partial prostheses and 81% for implants supporting single restorations. Average marginal bone resorption was 1 mm during the first year, 0.4 mm during the second year, and 0.1 mm during the third year and after 10 years.
Conclusions: The unchanged survival rate and the low average bone loss after 10 years confirm the feasibility of an immediate loading treatment protocol in the maxilla that included flapless surgery.

Schlagwörter: dental implants, flapless surgery, immediate loading, machined surfaces, poor bone quality
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