title: A five-year life-table analysis on wide neck ITI implants with prosthetic evaluation and radiographic analysis: results from a private practice.
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 > or =1 mm, 9.1% had one of them <1 mm and 1.9% had both lamellae <1 mm. Sinus perforation during surgery occurred 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 >1 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.
authors.affiliation: Swiss Dental Clinics Group, Clinique Dentaire de Chauderon, Place Chauderon 16, 1003 Lausanne, Switzerland. markbischof@bluewin.ch
authors.forename: Mark
authors.initials: M
authors.lastname: Bischof
authors.forename: Rabah
authors.initials: R
authors.lastname: Nedir
authors.forename: Simon
authors.initials: S
authors.lastname: Abi Najm
authors.forename: Serge
authors.initials: S
authors.lastname: Szmukler-Moncler
authors.forename: Jacky
authors.initials: J
authors.lastname: Samson
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging; D001641:Bicuspid; D015519:Bone Density; D003442:Crowns / Q000706:statistics & numerical data; D015921:Dental Implants / Q000009:adverse effects / Q000706:statistics & numerical data; D017267:Dental Prosthesis Design; D019232:Dental Restoration Failure; D003830:Denture, Partial, Fixed / Q000706:statistics & numerical data; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015993:Life Tables; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging / Q000601:surgery; D008437:Maxilla / Q000000981:diagnostic imaging / Q000601:surgery; D008443:Maxillary Sinus / Q000293:injuries; D008875:Middle Aged; D008963:Molar; D011859:Radiography; D013499:Surface Properties; D016019:Survival Analysis
chemical_list: D015921:Dental Implants