Scope of application: all ceramic, resin and plastic restorations made by the bonding technician center and immediately made by the clinic, such as inlay, hyperinlay, full crown, non-metallic fixed bridge, veneer, post and core, etc. Contraindications: if the patient is allergic to certain components, use it cautiously. Do not use it when the working face is not moisture proof. Do not use it when the operation is not in accordance with the instructions. Do not use side effects: no adverse side effects are found on the human body. If it is used in cavities with medium or deep caries, it may stimulate the pulp. Therefore, for cavities with medium or deep caries, use hole lining or bottom pad first, and then use Variolink II Interference and inhibition factors: containing eugenol or clove oil materials will hinder the polymerization of resin, should avoid using at the same time.