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Rational preparation of teeth



Rational preparation of natural teeth and the fabrication and relining of provisional restorations


The long-term success of a fixed prosthesis depends primarily on the proper execution of all clinical phases and techniques necessary for its fabrication and implementation. In this course, a few highlights of the clinical process will be analyzed: the preparation of the teeth and the relining of the provisional. The main purpose is to describe a routine and scientifically valid clinical practice which allows the participant to deal with these operational phases methodically and with confidence.
Preparing a tooth for the fabrication of a crown is not just a manual task. The reduction of a natural abutment, as a matter of fact, must be consequent to the evaluation of the relationship that the tooth has with the surrounding tissues, with the other teeth of the same arch, the opposite arch and the entire stomatognathic unit. It is in this overall vision that the speaker will illustrate in a detailed manner the step by step preparation of the abutment and the instruments used.
The preparation of the teeth should be followed by the application of proper temporary restorations. The temporary crowns and bridges are, in fact, an indispensable part of the prosthetic treatment to achieve a result of high quality in terms of both the esthetic appearance and the functional performance. The speakers will show how the temporaries should be manufactured so that they are easy to apply, promote tissue healing in the periodontal patients and help maintain the tissues healthy throughout the time that elapses until the cementation of the definitive prosthetic work.



  • The anatomical considerations that guide the preparation (the level of the gingival tissues, biologic width, level of the pulp).
  • The mechanical principles (retention and resistance form, path of insertion, partial vs full preparations).
  • The esthetic considerations (the thickness required for different dental restorations, the apico-coronal position of the prosthetic margin).
  • The types of preparation (shoulder, chamfer, knife-edged): indications, advantages and disadvantages of each.
  • The preparation technique.



  • The functions of the provisional
  • The materials that can be employed for the fabrication and intra-oral relining of the provisionals
  • The types of provisionals: immediate vs custom made, hand made vs cad-cam, full resin vs metal-reinforced.
  • The fabrication of a provisional shell: the step by step laboratory procedure and its application in the mouth.



  1. Preparation of prosthetic teeth on a dentoform: anterior and posterior teeth, chamfer and shoulder margins for metal-ceramic and all ceramic crowns.
  2. Fabrication of a temporary shell and its application and finishing.


Course duration
2 days
Theroretical-practical course
Maximum number of participants
Provided material
Detailed handout
Materials to bring
You will receive a detailed list of materials for hands-on exercises