I recently have seen an implant which has reverse coronal taper at the top of implant. These implants have a coronal portion narrower than the middle portion. This is supposed to decrease bone loss around the coronal portion after placement. With this type of system, how do you manage the space created around the coronal portion? Also, since this design features a decreased bone-to-implant contact in the coronal portion, will this be a problem? I would like to get your opinions about these implant designs with a reverse coronal taper.