title: Tilted implants in the immediate loading rehabilitation of the maxilla: a systematic review.
abstract: Tilted implants have been proposed as an alternative to traditional protocols in the rehabilitation of edentulous maxillae. The aim of this meta-analysis was to evaluate the outcomes of upright and tilted implants supporting full-arch fixed dentures for the immediate rehabilitation of edentulous maxillae, after at least 1 year of function. An electronic search of databases and a hand search of relevant journals in oral implantology were performed according to PRISMA guidelines through August, 2011. The literature search yielded 1,069 articles. Eleven articles were available for analysis. A total of 1,623 implants (778 tilted, 845 upright) were inserted into the maxillae of 324 patients. Seventeen tilted (2.19%) and 16 upright implants (1.89%) failed during the first year. No significant difference in failure rate was found between tilted and upright implants (p value = 0.52). Marginal bone level results were obtained from 6 studies. A non-significant mean difference between tilted and upright implants was found with regard to bone loss. Tilted implants demonstrated a favorable short-term prognosis in full-arch immediate loading rehabilitations of the maxillae. Randomized long-term trials are needed to better elucidate long-term success of tilted vs. upright-positioned implants.
authors.affiliation: University of Genoa, L. Rosanna Benzi 10, Genova, 16132, Italy. maria.menini@unige.it
authors.forename: M
authors.initials: M
authors.lastname: Menini
authors.forename: A
authors.initials: A
authors.lastname: Signori
authors.forename: T
authors.initials: T
authors.lastname: Tealdo
authors.forename: M
authors.initials: M
authors.lastname: Bevilacqua
authors.forename: F
authors.initials: F
authors.lastname: Pera
authors.forename: G
authors.initials: G
authors.lastname: Ravera
authors.forename: P
authors.initials: P
authors.lastname: Pera
mesh_terms: D016301:Alveolar Bone Loss / Q000209:etiology; D003758:Dental Implantation, Endosseous / Q000379:methods*; D015921:Dental Implants / Q000009:adverse effects; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D006801:Humans; D057893:Immediate Dental Implant Loading; D007575:Jaw, Edentulous / Q000534:rehabilitation*; D016013:Likelihood Functions; D008437:Maxilla
chemical_list: D015921:Dental Implants