Steps of root canal treatment
1. Pulp Opening: Remove decayed material, open the pulp chamber, and shape the cavity.

2. Root Canal Preparation: 2.1 Measure the working length using a root canal measuring instrument and confirm with X-ray. 2.2 Based on the measured working length, clean and enlarge the canal with a needle file. 2.3 Use a small syringe containing sodium hypochlorite, physiological saline, etc., to repeatedly flush away debris and infected material from the canal during preparation.
3. Root Canal Filling: 3.1 Cold Gutta-percha Filling: Select matching gutta-percha points, attach sealant, and use a lateral condenser to stack them layer by layer, compacting each layer. 3.2 Hot Gutta-percha Filling: Select matching gutta-percha points, attach sealant, use a heating system to vertically press and soften the gutta-percha, and remove the upper segment of gutta-percha. Then inject fluid gutta-percha into the root canal, filling precisely like 3D printing, taking care of the corners and possible branches of the root canal. Even irregular root canals can be filled well compared to cold gutta-percha.