The materials presented in the paper are dedicated to the surgical treatment of dental pulp in the dog. The interventions were performed at the Surgical Clinic of the Faculty of Veterinary Medicine. Was used dental installation with turbine, photopolymer lamp LED ENERGY, dental instrument kit, special dental filling materials and composition materials. The stages of endodontic therapy in the dental pulpitis are as follows: mechanically preparing the cavity chamber cavity and opening it; cleaning the chamber with hydrogen peroxide; instrumental processing of channels with pulp extractor; aseptisation channels with 3% Belodez solution using the Miller needle; degreasing and drying the channel with Endoji and channel obturation with Endofil. The final filling of the channel was performed with the Herculite complex and the photopolymer lamp LED ENERGY.