The maintenance time after filling ranges from 5 to 15 years, which is related to the oral care situation, the severity of tooth damage, and the individual’s physical condition. 1. Dental fillings can generally be maintained for 5 to 15 years, the specific time and personal maintenance situation is more related. 2. If you pay more attention to oral hygiene, caries itself is not serious, diet to avoid hard food on the teeth wear, the teeth themselves are of good quality, you can reach 15 years of service life, or even longer. 3. In addition, the materials used for dental fillings are alloy, composite resin, etc. According to the quality of the selected materials, the service life can be different. After filling the teeth should pay attention to personal oral hygiene, timely cleaning of food debris in the mouth, to prevent recurrence of dental caries.