Evaluation of pulp tissue dissolution capacity through different sodium hypochlorite agitation protocols

• Published in: Journal of conservative dentistry 2024-06, Vol.27 (6), p.639-643
• Main Authors: Vilela, Diego Gomes, Campos, Gustavo Oliveira, Fontana, Carlos Eduardo, De Martin, Alexandre Sigrist, Bueno, Carlos Eduardo Da Silveira, Kato, Augusto Shoji
• Format: Article
• Language: English
• Subjects: Ethylenediaminetetraacetic acid; Original; Root canal therapy; Sodium hypochlorite
• ISSN: 2950-4716; 0972-0707; 2950-4708; 2950-4708
• DOI: 10.4103/JCDE.JCDE_73_24

This study aimed to assess the dissolving capacity of 2.5% sodium hypochlorite using eight agitation protocols within swine pulp tissue. Twelve lower first premolars were prepared and split into the fragments with a groove housing porcine dental pulp. Groups were assigned based on agitation systems: manual, passive ultrasonic, Easy Clean and XP-Endo Finisher. Two agitation time protocols were applied: One min (3 s × 20 s cycles) and 2 min (6 s × 20 s cycles). Wilcoxon Mann-Whitney test was used to compare the groups. Both time frames demonstrated superior results compared to manual group ( > 0.5). However, in the two min groups, no significant differences were observed among the other protocols ( < 0.5). Intriguingly, increasing cycle numbers significantly improved results within each group ( > 0.5). Extending the chemical agitation time during final irrigation enhances tissue removal, regardless of the irrigation protocol employed.