Dental post and core are types of a fixed prosthetic treatment appliance by which a part or a complete dental crown is replaced. The main prerequisite for a dental post and core is a lack of tooth vitality. There are various types of dental post and cores on the market that we use today. The main classification of dental post and cores is according to the way they are made. They can be custom made or prefabricated. When making a individual post and core, a collaboration with dental laboratory is needed, which makes the procedure last longer and increases the cost of a treatment. Prefabricated posts allow tooth consolidation in one visit but are also strictly indicated and conditioned by the pressence of a certain amount of dental tissue in the gingival part of a tooth. When preparing a tooth for a dental post and core, one must take care of an endodonthic filling. The apical third of the root canal must remain intact. The width of the preparation can be up to 1/3 of the total width of the dental root. The preparation is oval in order to prevent the rotation of the dental post and core within the canal. By following these postulates, we prevent the release of the sealing or a root fracture. Cementing the posts is an extremly important procedure. There is a large number of cements on the market. The most important thing about cements is for them to act bacteriostatically, to be stable and to firmly tie the dental post and core with the surrounding dental structures. To build up a quality post and core, a dentist should possess a great knowledge and skills.