Root canal therapy is a very important work of oral cavity restoration, and the position of fillings is one of the key factors affecting the therapeutic effect. This paper will introduce the standard of filling position in detail, as well as the situation of insufficient filling and excessive filling.

Filling position standard

Ideally, root canal fillings should closely fill the whole root canal, and the distance from the root tip should be kept within the range of 0.5 ~ 2.0 mm, only in this way can the maximum therapeutic effect be ensured.

Underfilling situation

If the filling in the root canal is more than 2mm away from the root tip, or there is a transmission image in the root canal at the root tip, it indicates that there is a problem of insufficient filling. Underfilling will lead to residual bacteria and substances in the root canal, which will affect the therapeutic effect.

Overfilling situation

If the filling in the root canal exceeds the apical foramen, it is overfilled. Overfilling will lead to inflammatory reaction of periapical tissues, causing pain and discomfort, and even affecting the normal function of teeth.