Scanning electron microscope evaluation of hydrophobic and hydrophilic sealants under different humidity conditions: An in vitro study
DOI:
https://doi.org/10.47990/alop.v8i1.144Keywords:
Tag formation, hydrophilic sealants, relative humidity, scanning electron microscopeAbstract
Objective: Evaluates the effectiveness of different brands of hydrophobic and hydrophilic pit and fissure sealants in scanning electron microscopy (SEM) exposed to relative humidity. Materials and Methods: 40 premolars extracted for orthodontic purposes were randomly divided into 8 groups: Group 1: Clinpro® sealant (dry environment), Group 2: Clinpro® sealant (wet environment), Group 3: Embrace WetBond® sealant (dry environment), Group 4: Embrace WetBond® sealant (wet environment), Group 5: UltraSeal XT Hydro® sealant (dry environment), Group 6: UltraSeal XT Hydro® (wet environment) sealant, Group 7: UltraSeal XT Plus sealant® (dry environment) and Group 8 UltraSeal XT Plus® sealant (wet environment). Results: Group 1 (Clinpro® / dry environment) showed higher values of adhesion to the enamel statistically significant, in relation to the other groups. It also showed better quality in the formation of “tags” in comparison with the other groups, independently if the atmosphere was dry or damp. Conclusions: Clinpro 3M® sealants, used in dry or relative humid conditions, proved to have good results. The UltraSeal XT Plus® fluid resin used in wet conditions did not provide good results with little tag formation; the hydrophilic sealants (Embrace Wetbond® and UltraSeal XT Hydro®) used in a humid environment had a capacity of adaptation, observing good formation of tags; Hydrophilic sealants used in dry environments do not adapt to the surface and have a tendency to fail with regard to adhesion.
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