The problem of technical complications in implants and implant-supported restorations has existed for decades. The most frequent complication is the loosening of the fixing screw which, although is not catastrophic, if it occurs repeatedly, it may affect the success of the implant therapy and the patient satisfaction. Factors that affect the frequency of prosthetic complications include: the implant-abutment connection, para-functional habits, cantilevers and the type of restoration. The treatment options for the clinician are limited but certain preventing measures during construction of the restoration may be helpful to overcome this clinical problem.
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