Melba Fernanda Chávez Barreto & Aurealuz Morales–Guevara
Summary
The application of cryotherapy in endodontics consists of irrigation with saline solution at low temperatures with the aim of reducing post-operative pain in root canal treatment. The objective of this study was to compare the thermal reduction of the external root surface through intracanal cryotherapy according to temperature and time. Materials and methods: Cleaning and disinfection was carried out with 4 % sodium hypochlorite (NaOCl), proceeded with chamber opening, biomechanical preparation and final irrigation with 2.5 % sodium hypochlorite (NaOCl) and 17 % EDTA, activating it manually with a gutta-percha cone No. 40 to 100 cycles in 1 minute. The thirty single-root premolars were divided into 3 different irrigation interventions using saline solution at room temperature for the control group (CG), saline solution at a temperature of 1.5 C° for group 1 (G1), and saline solution at a temperature of 4 C° for group 2 (G2) with temperature recording at 0, 1, 2 and 3 minutes after final irrigation. Results: Significant thermal reduction was found in the external root surface of all groups compared at different cryogenic times and temperatures.
KEY WORDS: cryotherapy, endodontics, postoperative pain.
How to cite this article
CHÁVEZ BARRETO, M. F. & MORALES–GUEVARA, A. Intracanal cryotherapy for thermal reduction of the external root surface. In vitro study. Int. J. Odontostomat., 18(2):255-259, 2024.