It's been researched for a while how conservative dentistry approaches the treatment of carious lesions. In order to preserve as much of the dentinal tubules and maintain pulp vitality, less invasive procedures have been adopted for both early dentin lesions, fillings or not, as well as for dentin lesions. Despite the difficulty in managing children, pediatric dentistry is even more in need of this. Additionally, since these treatments are simple to apply and frequently do not require the use of anesthetic, they speed up clinical work and promote professional behavior. The biological goal of the provisional caries removal is to foster an environment that will encourage dentin demineralization. This method entails removing the affected dentin and preserving the damaged dentin, which is then sealed with restorative material. In order to create the right circumstances for the pulp to respond to aggressive stimuli and activate a defense mechanism through dentin sclerosis and the creation of reparative dentin, this has been used in the treatment of severe deep fissures in dentin, in both the primary teeth and in permanent teeth. Since this procedure is only for teeth without clinical or radiographic manifestations of irreversible pulp pathology, certain criteria should be assessed before the PCR is carried out, such as the presence of a fistula or edoema, mobility that is inconsistent with the degree of root resorption, spontaneous or nighttime pain, a change in radiopacity in the furcation area or periapex, and external or internal radicular resorption. The following methods—indirect pulp therapy, atraumatic restorative treatment, and stepwise excavation—are the foundation of the practical use of PCR. The indirect pulp treatment keeps the decayed tissue near the pulp before covering it with a biocompatible substance. The carious tissue is then removed using hand instruments during ART, and the tooth is subsequently sealed with glass-ionomer cement. The two stages of the step-by-step excavation are focused on removing the necrotic dentin and sealing the cavity in preparation for reopening and further excavation in the future. The PCR is a technology that has promise because, when compared to TCR, both techniques produced outcomes that were comparable in terms of the lifespan of restorations and the cessation of the progression of carious lesions. Authors claimed that following PCR, it is possible to keep some carious tissue under fillings, yielding satisfactory outcomes in terms of clinical and radiographic success. However, because the material that is glued to the teeth dentin has a problem with adhesion, writers have questioned the durability of carious dentin that has been purposefully left in the pulp wall. Additionally, PCR might lessen the dental structure's resistance to fracture.

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