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Five‐Year Follow‐Up of Immediate Fixed Restorations of Maxillary Implants Inserted in Both Fresh Extraction and Healed Sites Using the N obel G uide™ System
Author(s) -
Polizzi Giovanni,
Cantoni Tommaso
Publication year - 2015
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.12102
Subject(s) - medicine , dentistry , implant , prosthesis , dentition , radiography , soft tissue , orthodontics , surgery
Background Transition from a hopeless dentition to an implant prosthesis, without wearing a removable denture, requires adaptation with guided surgery in postextraction cases. Purpose The study aims to evaluate mid‐term follow‐up of patients with compromised dentition treated with immediate fixed restorations on maxillary implants inserted in fresh extraction and healed sites by using N obel G uide™ (Nobel Biocare AB, Gothenburg, Sweden) in combination with a specially designed radiographic stent. Materials and Methods Twenty‐seven patients (females 20, males 7) aged 34 to 71 years (mean 55.8) were treated with flapless surgery. Immediate full‐arch ( n = 19) or partial ( n = 10) restorations were delivered. Patients were followed both clinically (mean 61.3 months, 48–77) and radiologically for up to 5 years (mean 46.5 months, 12–61). C umulative survival rate ( CSR ) was assessed. Marginal bone remodeling was evaluated at implant insertion, after 2 and 4/5 years. Soft tissue parameters as well as biological and mechanical complications were also recorded. Results One‐hundred sixty implants were assessed. Four implants in two patients failed and were removed (overall CSR 97.33%), and two were replaced. All final prostheses were stable and in good function throughout the study. Bone loss from insertion to 2 years, for implants placed in both extraction and healed sites, was 0.85 mm ( SD 1.28, n = 130); from insertion to last radiological control (4–5 years), 1.39 mm ( SD 1.88, n = 127); and between 2 years and last control, 0.64 mm ( SD 1.66, n = 111). No bone loss difference was found between extraction and healed sites at any time ( p > .05). At the last visit, most implants showed normal mucosa. No other complications occurred. Conclusions This 5‐year retrospective study demonstrated a good outcome with regard to implant survival, marginal bone changes, and soft tissue conditions.