The materials used for filling are: 1.Clove oil zinc oxide is a temporary sealant, which can play a pacifying and analgesic role when the cavity is deeper, and after 1-2 weeks the sensitive symptoms disappear, then replace with permanent filling materials. 2.Calcium hydroxide can be used as pulp guard or cushion, which can promote the formation of restorative dentin. 3.Silver amalgam has higher wear resistance, and is mostly used for filling the posterior cavity, with a service life of about 10 years, due to the pollution of mercury to the environment, it is basically eliminated now. 4.Composite resin has stronger bonding and is close to the color of teeth, and is mostly used for the repair of anterior teeth. 4.Composite resin has strong adhesive properties and is close to the color of teeth, and is used for the repair of anterior teeth. 5.Glass ionomer is a widely used filling material in clinical practice, and the fluorine it contains can promote the remineralization of enamel.