How much bone is needed around implants in the posterior (non-aesthetic) region? Is the rule of 1mm bone surrounding the implant neck scientifically based? Is the idea of stress concentration 3mm around the implant neck supported by anything other than finite element analysis?
How far can we go with extra-short, extra-narrow implants and their combined use? Can we safely use extra-short implants in the posterior region? Is there enough evidence for that?
How do we make the decision whether to use short/narrow implants or standard implants on a augmented ridge?