A Recent Study: Equally good outcomes in the mandible as in the maxilla with TiUnite® implants using the All-on-4® treatment concept protocol.
(Balshi et al. J Prosthodont. 2013. [Epub]) on Dec 23 in Recent Findings.
By Nobel Biocare News

Sub-analyses by tilted vs. axial placement and by gender showed no difference or no significant difference. Implant failures were higher in smokers than non-smokers (6.1% vs. 2.1%); however, likely due to low failure rates overall, statistical significance was not reported. The authors discussed the improvements in CSR witnessed in the published literature over time with the All-on-4® treatment concept and attributed these successes to the introduction of TiUnite surface implants.