Which type of glass ionomer cement is specifically designed for restoring areas of erosion near the gingiva?

Type II glass ionomer cement is specifically designed for restoring areas of erosion near the gingiva due to its enhanced properties that make it suitable for use in areas subject to moisture and wear. This type of glass ionomer cement is formulated with a higher viscosity and is ideal for use in areas where additional strength is needed, such as in class V restorations where erosive forces are likely.

Type II is known for its adhesive qualities to both enamel and dentin, which is crucial when dealing with gingival erosion, as it helps in sealing the restoration and prevents further degradation of the tooth structure. Additionally, type II glass ionomers release fluoride, offering a preventive measure against caries in the surrounding areas, which is particularly beneficial for patients who may have predispositions to dental decay.

In contrast, other types of glass ionomer cements have different applications. Type I is typically used as a luting cement for crowns and bridges, while Type III is intended for use in liners and bases for cavity preparations, and Type IV is designed for specific applications like orthodontics or temporary restorations. Thus, Type II's formulation makes it the most appropriate choice for managing erosion near the gingiva.