of finishing and shaping and results in a reduction or elimination of subsequent gingival irritation in addition to the above described techniques it will be appreciated that a conventionally manufactured prosthesis e g porcelain could be fit onto the composite resin abutment 4 as desired by the particular patient and or practitioner referring to fig1 a c an interfitting arrangement between a pre manufactured tooth prosthesis 78 and abutment 40 may include a snap fit feature in which the abutment 40 may have one or more circumferentially disposed projections 72 and recesses 70 configured to mechanically couple to corresponding projections 74 and recesses 76 of the replacement tooth prosthesis 78 the projections and recesses of the abutment 40 may be located just above the smooth surface region 80 such that when the replacement tooth prosthesis 78 is fully engaged with the abutment 40 the smooth surface region 42 remains adjacent the patient 39 s gum line the projections may be configured to create a positive seat and seal when the tooth prosthesis 78 is fully engaged with the abutment 40 the positive sealing enables excess resin to be expressed out from between the prosthesis and abutment for easy cleanup as shown in fig1 a the replacement tooth prosthesis 78 may be aligned with the abutment 40 such that the recess 90 of the prosthesis 78 is aligned with the tooth prosthesis engaging.