PURPOSE. The aim of the present study was to evaluate the one-year post-loading clinical outcomes of extrasinus zygomatic implants placed in immediate function in patients with severe atrophy of the posterior maxilla. MATERIALS AND METHODS. Twenty-four fully edentulous patients, or with failing dentition in the maxilla and severe atrophy of the posterior maxilla (15 female and 9 male), ranging in age from 48 to 77 years (mean = 62.6 years) were treated with 48 zygomatic implants and 69 standard implants. Patients had less than 4 mm of available bone height and width in the premolar area. All patients received two zygomatic implants and two to four conventional implants. All zygomatic implants had a diameter of 3.9 mm. Eleven 45-degree abutments, thirty-one 52.5-degree abutments and six 60-degree abutments were con-nected to the zygomatic implants. Outcome measures were implant and prosthesis fai-lure, complications, modified plaque index (mPLI), modified bleeding index (mBI) and mu-cosal seal efficacy evaluation (MSEE) scores. RESULTS. No dropouts occurred up to one-year post-loading. Two anterior conventional implants failed in one patient after eight months. No zygomatic implant failed. Mechanical complications occurred in five patients (20.8%), and biological complications in seven patients (29.2%). All complications were successfully resolved. The median mPLI was 1, with no patient reaching a value of 3. In the majority of patients the mBI was 0, with no patient having values of 2 or 3. The incidence of MSEE >4 mm at 1-year follow-up was 12.5%. CONCLUSIONS. One-year results indicate that extrasinus zygomatic implants loaded immediately can be considered a viable option for fixed prosthetic rehabilitation in cases of extremely atrophic edentulous maxilla. © 2023, EDRA S.p.A. All rights reserved.
Immediate fixed rehabilitation of severe maxillary trophy using extrasinus zygomatic implants: one-year results from a prospective cohort study
Signorini, Luca
2023-01-01
Abstract
PURPOSE. The aim of the present study was to evaluate the one-year post-loading clinical outcomes of extrasinus zygomatic implants placed in immediate function in patients with severe atrophy of the posterior maxilla. MATERIALS AND METHODS. Twenty-four fully edentulous patients, or with failing dentition in the maxilla and severe atrophy of the posterior maxilla (15 female and 9 male), ranging in age from 48 to 77 years (mean = 62.6 years) were treated with 48 zygomatic implants and 69 standard implants. Patients had less than 4 mm of available bone height and width in the premolar area. All patients received two zygomatic implants and two to four conventional implants. All zygomatic implants had a diameter of 3.9 mm. Eleven 45-degree abutments, thirty-one 52.5-degree abutments and six 60-degree abutments were con-nected to the zygomatic implants. Outcome measures were implant and prosthesis fai-lure, complications, modified plaque index (mPLI), modified bleeding index (mBI) and mu-cosal seal efficacy evaluation (MSEE) scores. RESULTS. No dropouts occurred up to one-year post-loading. Two anterior conventional implants failed in one patient after eight months. No zygomatic implant failed. Mechanical complications occurred in five patients (20.8%), and biological complications in seven patients (29.2%). All complications were successfully resolved. The median mPLI was 1, with no patient reaching a value of 3. In the majority of patients the mBI was 0, with no patient having values of 2 or 3. The incidence of MSEE >4 mm at 1-year follow-up was 12.5%. CONCLUSIONS. One-year results indicate that extrasinus zygomatic implants loaded immediately can be considered a viable option for fixed prosthetic rehabilitation in cases of extremely atrophic edentulous maxilla. © 2023, EDRA S.p.A. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
