The “Prosthetic Orthodontic Approach”: An Application of the Biologically Oriented Preparation Technique Protocol

Figure 3

Mesialisation of the abutment tooth using the biologically oriented preparation technique (BOPT): (a) tooth; (b) the tooth is prepared without a finish line (BOPT), equally on the distal and mesial sides, such that the tooth axis remains unchanged; (c) the tooth is prepared without a finish line (BOPT), more on the distal than on the mesial side: this allows the mesialisation of the crown axis.

(a)

(b)

(c)