Dental Implants Research Today is a free monthly online journal that collates and summarizes the latest research about Dental Implants, including details on dentistry, surgery, tooth implants.

Implant placement immediately after the lateral approach of the trap door window procedure to create a maxillary sinus lift without bone grafting: a 2-year retrospective evaluation of 47 implants in 33 patients.

Chen TW, Chang HS, Leung KW, Lai YL, Kao SY

Oral and Maxillofacial Surgery, Kaoshiung-Veterans General Hospital, Kaoshiung, Taiwan.

PURPOSE: The present study was undertaken to retrospectively evaluate the status of implants in patients subjected to a maxillary sinus lift and immediate implant placement without bone grafting. PATIENTS AND METHODS: Seventy-five implants were placed in 47 patients from 2000 to 2006. Lateral approach for the trap-door, open-window method for sinus lifting without placement of either autogenous bone grafts or allogeneic bone substitute was carried out. A 5-mm of the bone level was required in the alveolar ridge for all. All implants were placed synchronously with sinus lifting procedure. Patients underwent strict oral hygiene instruction, periodontal charting, presurgical/postsurgical panoramic radiographs, and postsurgical computed tomographic scan during the follow-up. The implant survival was defined when the prosthesis had been delivered and followed for 2 years without infection, pain, or more than 2-mm peri-implant bone loss. RESULTS: Thirty-three patients (23 males, 10 females) having an average age of 55 years old, with a total of 47 fixtures were followed for more than 2 years after prosthesis delivery. No patients developed sinusitis or other complications leading to loss of an implant subsequent to performance of the sinus lifting-combined immediate implant surgery. The 2-year survival of fixture was 100%. Increases in lifted sinus bone height ranged from 3 mm to 9 mm with an average of 4.5 mm. The peri-implant health was judged to be good with a peri-implant sulcus depth of 2.7 +/- 0.5 mm at 2-year follow-up. CONCLUSIONS: A good survival rate was observed in the immediate implant placement synchronously with the lateral approach for maxillary sinus lift without bone grafting.

Published 23 October 2007 in J Oral Maxillofac Surg, 65(11): 2324-8.
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