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The Long‐Term Use of Zygomatic Implants: A 10‐Year Clinical and Radiographic Report
Author(s) -
Aparicio Carlos,
Manresa Carolina,
Francisco Karen,
Ouazzani Wafaa,
Claros Pedro,
Potau Josep M.,
Aparicio Arnau
Publication year - 2014
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.12007
Subject(s) - medicine , radiography , implant , dentistry , maxilla , alveolar ridge , head and neck , orthodontics , surgery
Background The zygoma implant has been an effective option in the short‐term management of the atrophic edentulous maxilla. Purpose To report on long‐term outcomes in the rehabilitation of the atrophic maxilla using zygomatic ( ZI ) and regular implants ( RI ). Material and Methods 22 consecutive zygomatic patients in a maintenance program were included. Cumulative survival rate ( CSR ) of ZI , RI , prostheses, and complications were recorded during, at least, 10 years of loading. Implant mobility was tested using P eriotest®. Sinus health was radiographically and clinically assessed according to L und– M ackay ( L – M ) score and L anza and K ennedy survey, respectively. A satisfaction questionnaire and anatomical measurements were also performed. Results Patients received 22 prostheses, anchored on 172 implants. Forty‐one were ZI . Three RI failed (10 years CSR = 97.71%). Two ZI were partly removed due to perimplant infection (10 years CSR = 95.12%). All patients maintained functional prostheses. One patient fractured framework twice. Loosening or fracturing screws happened in 11 patients. Seven patients fractured occlusal material. Four ZI abutments in two patients were disconnected because of uncomfortable prostheses. Alveolar height at the ZI head level on the right and left sides was 2.64 mm and 2.25 mm, respectively. Mean distance of ZI head center to ridge center, on the right and left sides was 4.54 mm and 5.67 mm, respectively. Mean P eriotest values ( PTv ) of ZI were −4.375 PT v and −4.941 PT v before prostheses placement and after 10 years, respectively. Six patients experienced sinusitis 14–127 months postoperatively. 54.55% of the L – M scores did not present opacification ( L – M = 0) in any sinus. Osteomeatal obstruction happened in eight patients (two bilateral). Two (9.09%) were diagnosed with sinusitis. Eighty‐four percent reported satisfaction levels above 80%. 31.81% reported maximum satisfaction score (100%). Conclusions The long‐term rehabilitation of the severely atrophic maxillae using ZI is a predictable procedure.