Tooth preparation paste for porcelain crowns

Operational processing of teeth when restoring their destroyed crowns and when replacing defects in the dentition with fixed prostheses injures the pulp. Compliance with the rules of the preparation technique of hard dental tissues, as well as cooling the prepared tooth with water and air, to a certain extent, allow avoiding an undesirable reaction from the tooth pulp. However, these methods are effective only for teeth to be restored with stamped metal crowns and plastic crowns. When replacing crown defects of non-pulped teeth and dentition with fixed prostheses made of porcelain and metal-ceramic, when a significant layer of enamel and dentine has to be excised, these preventive measures are no longer able to prevent traumatic damage to the tooth pulp. The preparation of teeth in such cases is accompanied by severe pain. Application anesthesia, as a rule, does not achieve the goal, and injection or general anesthesia, eliminating only pain, does not prevent traumatic damage to the dental pulp, its inflammation or necrosis.