Advances in the study of the closure of different root tube closure agents

Three-dimensional root canal filling is the basis for successful long-term root canal treatment.

As the main material of root canal filling, gutta-percha can not achieve the purpose of completely sealing the entire root canal system due to its poor sealing ability. Therefore, root canal sealer must be used. The sealant plays an important role in filling the gap between the root canal wall and the gutta-percha tip, the gap between the gutta-percha tip and the gutta-percha tip, and the irregular root canal structure. At present, there are many types of root canal sealants with different sealing properties. This article reviews the sealing properties of different root canal sealants.

The sealing effect of root canal sealer The root canal system is a tubular structure, the lumen is the root canal, the wall is the dentin, and the structure is complex. In addition to the main root canal, it also includes an anastomosis between the dentin tubules and side branches of the root canal Irregular parts such as the apical triangle. The main components of the gutta-percha tip are zinc oxide and gutta-percha, which have poor adaptability to the root canal wall and can only fill the main part of the lumen. Therefore, if gutta-percha is used alone for filling without root canal sealant, it cannot completely conform to the root canal shape. , To achieve a tight three-dimensional sealing effect. Therefore, the gaps between the root canal wall and the gutta-percha tip, the gaps between the gutta-percha tip and the gutta-percha tip, and the irregular root canal parts need to be filled with a sealant. Root canal sealer is distributed between the root canal wall and the gutta-percha tip, and between the gutta-percha tip and the gutta-percha tip. It is the "bridge" between the root canal wall and the gutta-percha tip, and the gutta-percha tip. Binder). The ideal sealant can not only be tightly combined with the gutta-percha tip, but also needs to be tightly combined with the root canal wall, that is, the sealant can form an infiltrating interface on the root canal wall and penetrate into the dentin tubules, lateral root canals and other structures It forms a tight connection with the peritubular and intertubular dentin. Whether a better sealing effect can be achieved depends on whether the root canal sealant, the root canal wall and the gutta-percha tip are tightly connected12.