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Notre clinique de Morges – Saint-Louis déménage le 2 mai à Morges – Gare : Rue Centrale 27, 1110 Morges

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.

BISCHOF Mark, NEDIR Rabah, ABI NAJM Simon, SZMUCKLER-MONCLER Serge, SAMSON Jacky

Keywords

ITI implants, medium term, posterior mandible, posterior maxilla, private practice, prosthetic complications, radiographical evaluation, short implants, single molar crown, SLA, wide implants

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% rehabilitated the molar area. Implants in the mandible and in the maxilla were 61.2% and 38.8%, respectively; the mean implant length was 9.7 and 8.9 mm, respectively. Eighty-nine percent sites had both vestibular and buccal bone lamellae ≤ 1 mm, 9.1% had one of them o1 mm and 1.9% had both lamellae o1 mm. Sinus perforation during surgery occured in 52% 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 five 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 41 and 42 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.

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