Types of root canal filling materials

We usually see many types of root canals, and most people may not be able to distinguish their material composition. In fact, there are three main types of materials: solid, paste and liquid. Of course, different types have different uses and effects, and people who are not professionals may not understand them. Here is a detailed introduction to the types of root canal filling materials.

Solid root canal filling materials

1. gutta-percha points

It has a certain degree of compressibility (3% to 6% of volume). It softens when heated, and its volume increases as the temperature increases, making it easy to take out. The gutta-percha tip has a certain tissue affinity and is suitable for various pulpitis, pulp necrosis, gangrene, various apical periodontitis, and permanent filling of the root canals of teeth that have failed vital pulp preservation treatment after pulp removal. It has X-ray blocking properties, making it easy to detect and observe. Soluble in solvents such as chloroform and ether. It is often used in conjunction with root canal filling paste to tightly fill the root canal.

2. Silver cones

It has high mechanical properties, certain bactericidal and antibacterial effects, X-ray blocking properties, and can be used for curved root canals. However, its corrosion resistance is poor.

3. Plastic points

It is a root canal sealing material usually composed of polypropylene or polystyrene. It is elastic, easy to apply and has good tissue affinity. However, X-ray transmittance is poor, which is not conducive to detection.

Paste root canal filling materials

Paste-type root canal filling materials are usually used together with solid root filling materials. They are made by mixing powder and liquid into a paste, which can harden after filling. It is mainly used to bond solid materials to the root canal wall and fill the gap between the solid material and the root canal wall. As a lubricant, it can improve the position of solid materials; it can also be used as a bactericidal agent to act on accessory root canals, tooth resorption, root fractures and other gaps that solid materials cannot enter.

Liquid root canal filling materials

Phenolic resin

The main components are resorcinol and formaldehyde, which quickly polymerize into phenolic resin.

It has high fluidity, good permeability and antibacterial effect. After polymerization, it is less irritating to the periapical tissues. The reddish brown color can penetrate into the dentinal tubules and discolor the dentin. It does not block X-rays and the filling effect cannot be checked. It is highly irritating to mucous membranes and other tissues. It is used in cases of curved root canals, narrow root canals or accidental instrument breakage in posterior teeth.

The above is a detailed introduction to the types of root canal filling materials. Through the above introduction, you may have some knowledge about root canal filling materials. You can also learn that root canals are closely related to our lives and can be used in many aspects. We hope our introduction will help you understand this knowledge.