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

Overview

Journal Int J Dent

Publisher Wiley

Specialty Dentistry

Date 2017 Jul 29

PMID 28751913

Citations 14

Authors

Giorgio Lombardo

Jacopo Pighi

Mauro Marincola

Giovanni Corrocher

Miguel Simancas-Pallares

Pier Francesco Nocini

Affiliations

Soon will be listed here.

Abstract

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 ( value: 0.33). Four implants failed. Covariates were not associated with CSR ( 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 ( 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.

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