Immediate Dentin Sealing may Improve Adhesion and Restoration Durability in both healthy and eroded dentin: Study

A study was done to investigate the influence of immediate dentin sealing (IDS) on the shear bond strength (SBS) and wettability of both sound and eroded dentin. Dentin specimens were divided into four groups (n= 21): sound dentin with and without IDS and eroded dentin with and without IDS. Erosive cycling was performed using 1% citric acid solution, and lithium disilicate discs were cemented onto the dentin. The samples underwent thermocycling and SBS testing (n= 10), with failure modes analyzed by stereomicroscopy. Scanning electron microscopy (SEM) (n= 3) was used to examine the hybrid layer and resin tags, while wettability (n= 8) was measured by contact angle analysis. RESULTS: Erosion significantly reduced the SBS (P< 0.001), while IDS increased it for both sound and eroded dentin (P< 0.001). The most common failure mode was adhesive. SEM revealed a thicker hybrid layer and more resin tags in eroded dentin with IDS. Erosion did not affect wettability (P= 0.186), but IDS increased it (P< 0.001). IDS improved both SBS and wettability in sound and eroded dentin, suggesting it may be an effective technique for enhancing adhesion in restorative dentistry. Immediate dentin sealing (IDS) improves bond strength and wettability in both sound and eroded dentin, making it a valuable technique for enhancing adhesion in restorative procedures, especially in cases with compromised dentin. This could contribute to the durability and success of restorations.

Reference:

Dos Santos Neto, Otavio M., et al. "Effect of Immediate Dentin Sealing On Bond Strength and Wettability in Sound and Eroded Dentin: a Laboratory Study." American Journal of Dentistry, vol. 38, no. 3, 2025, pp. 129-134.

Keywords:

Immediate, Dentin, Sealing, Improve, Adhesion, Restoration, Durability, both, healthy, eroded dentin, Study, Dos Santos Neto, Otavio M.