Authors
Bischof M., Nedir R., Abi Najm S., Szmukler-Moncler S., Samson J.
Title
A 5-year Life Table Analysis from a prospective study on Wide Neck ITI implants with prosthetic evaluation and radiographic analysis. Results from a private practice.
Journal
Clinical Oral Implants Research 17:512-520, 2006
Abstract
Abstract This paper reports a 5-year life table analysis on Wide Neck (WN) ITI implants placed in a private practice. In 212 patients, 263 implants were placed in the posterior region, 97.0% rehabilitated the molar area. Implants in the mandible and in the maxilla were 61.2% and 38.8%, respectively; mean implant length was 9.7 and 8.9 mm, respectively. 89.0% sites had both vestibular and buccal bone lamellae ≥ 1 mm, 9.1% had one of them < 1 mm and 1.9% had both lamellae < 1 mm. Sinus perforation during surgery happened for 52.0% of the maxillary implants. Prosthetic information was available for 249 implants; implants were involved in 157 single crowns (SC) and 80 fixed partial dentures (FPD). Radiographic analysis was performed on 102 implants that reached the 2 year-control and crestal bone loss (CBL) was measured. Results showed that 5 implants failed; the 5-year cumulative survival rate was 97.89%. The 1-year survival rate based on 259 implants was 98.8% and the 2-year survival rate based on 174 implants was 97.7%. In this 5-year timeframe, 94.3% of the SCs and 96.2% of the FPDs were free of complication. The mean CBL at the mesial and distal sides was 0.71 and 0.60 mm respectively; bone losses > 1.0 mm and > 2 mm were recorded for 29.7% and 2.5% of the sides, respectively. This mid-term study showed that the WN ITI implants were highly predictable in private practice and that prosthetic complication in the molar area was an infrequent event.
