Dental implant

A dental implant for installation in the maxillary comprised of a body and a head, said body is provided with a threaded end for attaching a dental prosthesis, said threaded end is connected to a first cylindrical portion which is connected to a first truncated conical portion, which in turn is connected to a second cylindrical portion having a diameter smaller than the smallest diameter of said truncated conical portion, said second cylindrical portion is further connected to a second truncated conical portion having the same conicity as said first truncated conical portion and said first and second truncated conical portions being coaxially disposed such that their conical surfaces will mate with the internal surface of a prepared maxillary cavity, said second truncated conical portion is further connected to a third cylindrical portion which has a diameter smaller than the smallest diameter of second truncated conical portion, said third cylindrical portion is further connected to a fourth cylindrical portion coaxial with said first and second truncated conical portions, said fourth cylindrical portion having a base at the side connected to said third cylindrical portion and having a diameter equal to the diameter of the conical projection, onto said base of the fourth cylindrical portion, of a cone defined by the first and second truncated conical portions, said fourth cylindrical portion is further connected to a third conical portion having an inclination of thirty degrees which in turn is connected to a fifth cylindrical portion, said fifth cylindrical portion is provided with threads for receiving said head, said fifth cylindrical portion having a split portion forming two legs which can be bent into slots formed on said head, whereby said head is prevented from rotation to lock the head against unthreading.