An in-vitro evaluation of mechanical and esthetic properties of orthodontic sealants

Abstract

Objective:To evaluate mechanical and esthetic Properties of two commercially available orthodontic sealants: Opal®Seal (OS) and L.E.D. Pro Seal (PS).Materials and Methods:Discs of each sealant were prepared to test the following properties: Micro hardness, wear resistance and color stability. Samples were randomly selected after the wear test for SEM imaging to analyze surface morphology.Results:OS was significantly harder than PS (P < 0.001). PS was significantly more wear resistant than OS (P < 0.05). PS showed a greater ∆E*ab (increased staining) when placed in wine or coffee showing a significant difference (P < 0.05). SEM showed particle size, shape and distribution were different for PS and OS reflecting the pattern seen on wear surfaces.Conclusion:Both orthodontic sealants are beneficial for protecting enamel. However with better wear properties PS was superior in resisting mechanical stresses. OS was more color stable.

Effects of staining and bleaching on a nanohybrid composite with or without surface sealant

“…Application of surface sealant, unfilled low-viscosity resin, after polishing, may be an advanced method to ensure resin composite surfaces are smooth. [ 5 6 ] Recently, a liquid polishing system (BisCover LV, Bisco Inc., Schaumburg, IL, USA) has been introduced to reduce or eliminate the need for clinical polishing of restorations. BisCover LV is a light-curing resin used to seal restorations and is claimed to form a smooth polished surface without a sticky air-inhibited layer.…”

In vitro evaluation of surface properties of Pro Seal® and Opal® SealTM in preventing white spot lesions

“…Previously, we reported the microhardness, resistance to wear and colour stability of these two sealants and they exhibited differences in wear abrasion resistance, hardness and discoloration . Our study demonstrated discoloration with food and drink was significantly higher with the PS, even though the efficacy of PS in reducing enamel demineralization was found to be 92% .…”

“…The sealants PS and OS have different amount of filler loading, OS with 38% and PS with 20%. The filler size was also different as observed under SEM in our previous study . Desired properties of orthodontic sealants include wear abrasion resistance, adequate hardness, colour stability, adequate F release, prevention of biofilm formation and resistance to acid penetration.…”

Boron Nitride Nanotubes as Filler for Resin-Based Dental Sealants

“…Considering such a value for a in vivo scenario, the results of ΔE1 obtained in this study can be considered within the limits of tolerance. Thus, the white-grey color of BNNTs seems to have no influence on the color of RBSs and the materials tested in this study had the ability to mask the white aspect of demineralized enamel 27 . As color remained similar to the sound enamel after sealing treatment, it is possible to use this material in aesthetic areas without compromising aesthetics.…”