Cumulative Success Rate of Short and Ultrashort Implants Supporting Single Crowns in the Posterior Maxilla: A 3-Year Retrospective Study

Aim. To determine cumulative success rate (CSR) of short and ultrashort implants in the posterior maxilla restored with single crowns. Patients and Methods. We performed a retrospective study in 65 patients with 139 implants. 46 were ultrashort and 93 short. Implants were placed with a staged approa...

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Published inInternational Journal of Dentistry Vol. 2017; no. 2017; pp. 1 - 10-078
Main Authors Lombardo, Giorgio, Pighi, Jacopo, Marincola, Mauro, Corrocher, Giovanni, Simancas-Pallares, Miguel, Nocini, Pier Francesco
Format Journal Article
LanguageEnglish
Published Cairo, Egypt Hindawi Limiteds 01.01.2017
Hindawi Publishing Corporation
Hindawi
Hindawi Limited
Wiley
Subjects
Biomechanics
Clinical Study
Dentistry
Gynecology
Prostheses
Sinuses
Stress concentration
Studies
Success
Transplants & implants
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Summary:Aim. To determine cumulative success rate (CSR) of short and ultrashort implants in the posterior maxilla restored with single crowns. Patients and Methods. We performed a retrospective study in 65 patients with 139 implants. 46 were ultrashort and 93 short. Implants were placed with a staged approach and restored with single crowns. Success rate, clinical and radiographic outcomes, and crown-to-implant ratio (CIR) were assessed after three years. Statistical analysis was performed by descriptive and inferential statistics. A log-binomial regression model where the main outcome was implant success was achieved. Coefficients and 95% confidence intervals were reported. Analyses were performed with Stata 13.2 for Windows. Results. 61.54% of patients were female and mean overall age was 51.9±11.08 years old. Overall CSR was 97.1% (95% CI: 92.4–98.9): 97.9 and 95.1% for short and ultrashort, respectively (P value: 0.33). Four implants failed. Covariates were not associated with CSR (P value > 0.05). Regression model showed coefficients correlated with implant success for ultrashort implants (0.87) and most of covariates but none were statistically significant (P values > 0.05). Conclusions. Our results suggest that short and ultrashort implants may be successfully placed and restored with single crowns in the resorbed maxillary molar region.
Bibliography:ObjectType-Article-1
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Academic Editor: Luigi Canullo
ISSN:1687-8728
1687-8736
DOI:10.1155/2017/8434281