i put this implant 6 years ago, biohorizons laser-lok diameter 4,5mm with color code green, the patient come back yesterday with loose crown, so i open the acces hole while pray its not a fracture screw, and thanks God its just a loose abutment screw
But when i blow the implant with air, something came out from the implant, it like a very small nuts
For the mean time i just re-screw the crown, and try to find out what is the small nuts, should i just reuse the old abutment and crown or redo all the restoration?
You lost the engaging portion of the hex so will have to completely remake the abutment/crown. I imagine that the fixture mount/impression coping/abutment (MPA) was used as the final abutment and had been stressed out during insertion at high torque. I have sheared off a handful of the Zimmer fixture mounts during high insertion torque so I can only imagine how many of them were near their breaking point and could have suffered this same fate had I elected to utilize the mount as the final abutment in the manner that Bio Horizons and Implant Direct has marketed with their product.
i cant believe this happening, i thought the abutment is one solid structure that cant be broken a little dissapointed with biohorizons
i hope the inner hex part of the implant still in good shape
Even though it is one solid piece it is still a hollowed out hex with thin walls and was never intended to be used with rotational torque. This fixture mount/abutment is being used as a hollow Allen/hex wrench to insert the fixture into dense bone and depending on the density can be placed under significant rotational stress/strain. Quality Allen/hex wrenches are made of solid hardened metal to withstand such stress and strain but these mounts are weak and then per the manufacturer expected to be utilized as the final foundation which saves money but doesn’t pass code. I originally thought it was a good concept but after seeing a few of my Zimmer mounts shear off during high torque insertion I realized the inherit weakness in this concept. I have a similar fear regarding how history might judge the new narrow conical stuff that emerges like a toadstool form a tiny little 3.0-3.5mm connection…