Selamento dentinário imediato: uma revisão da literatura

Abstract

During tooth preparation for indirect restorations, it is common for significant dentin exposure to occur, making sealing the newly cut dentin surface essential. For many years, Delayed Dentin Sealing (DDS) has been traditionally practiced in the treatment of indirect restorations. Using this technique, the sealing of the dentin surface occurs after the provisional phase, during the cementation consultation for the definitive restoration. However, studies indicate that this temporal sequence does not provide ideal conditions for adhesion procedures, since temporary sealing materials, such as temporary cements, often have low sealing capacity and may infiltrate or dislodge before the next appointment. As a result, there may be compromised adhesion, exposure of dentin to external contamination and, consequently, may cause sensitivity to the patient. Faced with this reality, a new approach known as Immediate Dentin Sealing (IDS) was developed, in which the dentin is sealed by an adhesive agent immediately after tooth preparation. The objective of this work was to review the scientific literature regarding the benefits of the IDS technique, its indications, adhesive systems used and the association between IDS and Resin Coating (RC). A review of the scientific literature was carried out using articles in English available in the PubMed database, published between 2003 and 2023. The literature review highlights that the IDS technique is a reliable and wellestablished clinical practice in dentistry. Its main advantages include improved bond strength between dentin and adhesive material, protection against external contamination, reduced dentin sensitivity and increased durability of indirect adhesive restorations. However, due to the lack of standardization of the technique, more studies are necessary in order to clarify doubts about the ideal conduction of the technique, such as, for example, cleaning methods before cementation. These investigations are essential not only to clarify doubts, but also to provide a more in-depth understanding of the performance of the IDS technique in the clinical success of indirect restorations in dentin substrate, both in the short and long term