6533b7d6fe1ef96bd1267092

RESEARCH PRODUCT

An up to 7-Year Retrospective Analysis of Biologic and Technical Complication With the All-on-4 Concept

Miguel Peñarrocha-diagoMarco TallaricoSilvio Mario MeloniLuigi CanulloDavid Peñarrocha-oltraMilena Pisano

subject

AdultMalemedicine.medical_specialtymedicine.medical_treatmentRadiographyAlveolar Bone LossDentistryProspective data02 engineering and technologyProsthesis03 medical and health sciencesimplant complications0302 clinical medicinetilted implantsAll-on-4 complete edentulism dental implants complete-arch prosthesis tilted implants implant complicationsdental implantsRetrospective analysisHumansJaw EdentulousMedicineDental Restoration FailureProspective StudiesAgedRetrospective StudiesBiological ProductsAll-on-4business.industrycomplete-arch prosthesisSignificant differencecomplete edentulism030206 dentistryMiddle Aged021001 nanoscience & nanotechnologySurgeryTreatment OutcomeAll-on-4FemaleDental Prosthesis Implant-SupportedImplantOral Surgery0210 nano-technologybusinessComplicationFollow-Up Studies

description

The aim of this study was to evaluate retrospectively biologic and technical complications as well as clinical and radiographic outcomes of patients treated with 4 implants according to the All-on-4 protocol and followed up to 7 years of function. Data from 56 consecutive patients presenting complete edentulous jaw, aged 18 years or older, treated between January 2008 and December 2013, were evaluated. The outcomes were implant and prosthetic survival and success rates, any complications, and marginal bone loss (MBL). Two-hundred twenty-four implants were placed in 56 patients. During the entire follow-up, 1 maxillary implant but no prosthesis failed during the healing process. Fourteen patients experienced 1 complication each (10 technical, 4 biologic). The overall implant and prosthetic success rate was 98.2% and 82.1%, respectively. All complications were considered as minor and successfully resolved chairside. A mean MBL of 1.30 ± 0.63 mm was observed at the last follow-up. Statistically significant difference was found for postextractive implants (0.79 ± 0.26) vs implants placed in healed sites (1.03 ± 0.46; P = 0.024). Within the limits of the present study, the All-on-4 concept may be a valuable surgical and prosthetic option for the treatment of complete edentulous jaws. However, minor technical and biologic complications can occur. Further long-term prospective data with primary outcomes focused on success rates are needed.

yearjournalcountryeditionlanguage
2016-06-01Journal of Oral Implantology
https://doi.org/10.1563/aaid-joi-d-15-00098