Difficult case. Exo of remaining upper teeth, urq sinus augmentation and placement of implant. 14 slanted implant, 12/22 placed into exo sockets. 24 placed and 26 placed in a slanted fashion to avoid the sinus. 12/22 torqued out > 70Ncm. 26-14 torqued out about 30Ncm. 24 torqued out around 30ncm and then became loose after application of the temporary cylinder. Removed from appliance. DEnture converted to temporary fixed prosthesis attached to 14/12/22/26 implants. Multi-unit abutments used.