Abstract: A device for use in attaching a dental prosthesis to a tooth, comprising cooperating male and female portions having a base and a head, respectively, for attachment to and between the dental prosthesis and the tooth, and a post assembly forming part of the male portion and comprising a base member adapted for attachment to the base of the male portion and having an aperture extending through central portions thereof, a stud extending through the aperture of the base member and having one end which is rotatingly associated with the base member, an engagement member attached to another end of the stud and adapted for engagement with a retention device associated with the female portion, and a resilient washer surrounding the stud and separating the base member from the engagement member. Also, a method for attaching a dental prosthesis to a tooth.