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Implant‐Supported Immediately Loaded Fixed Full‐Arch Dentures: Evaluation of Implant Survival Rates in a Case Cohort of up to 7 Years
Author(s) -
Niedermaier Robert,
Stelzle Florian,
Riemann Max,
Bolz Wolfgang,
Schuh Paul,
Wachtel Hannes
Publication year - 2017
Publication title -
clinical implant dentistry and related research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.338
H-Index - 85
eISSN - 1708-8208
pISSN - 1523-0899
DOI - 10.1111/cid.12421
Subject(s) - medicine , implant , dentistry , dentures , maxilla , survival rate , dental implant , retrospective cohort study , osseointegration , dental prosthesis , orthodontics , surgery
Background The treatment of severely atrophied and edentulous jaws by means of fixed implant supported solutions is a challenging procedure. Purpose The immediate loading of four to six axial and tilted implants offers the possibility to overcome elaborate hard tissue augmentation procedures but lacks implant and patient related data on implant survival rates. Materials and Methods This retrospective 7‐years clinical trial investigated the implant survival rates of 2,081 implants (380 patients, 482 jaws) using an immediate loading protocol with either 4, 5, or 6 implants per restoration. Survival rates were calculated concerning implantation related factors (jaws/number of supporting implants/angulations/diameters/lengths) and patient related factors (medical status/smoking). Results Overall survival of 2,081 implants was 97.0% on implant level. Survival rates of implantation related factors did not yield significant differences. Significant differences were yield between healthy patients and patients with osteoporosis ( p = .002) and the medical status group “other” ( p = .032), respectively. Smokers yielded a significantly higher survival than nonsmokers ( p = .002). Conclusions It is assumed that four implants per jaw serve as a sufficient implant number for full arch restorations in both, the mandible and the maxilla. Osteoporosis under the medication with bisphosphonates seems to be a risk factor for implant survival. The authors suggest that the effect of smoking on ISRs remains controversial within this treatment concept.