Akademik Veri Yönetim Sistemi
Acta Odontologica Turcica, cilt.43, sa.2, ss.99-104, 2026 (TRDizin)
OBJECTIVE: To compare the removability of calcium hydroxide (Ca(OH)2 ), n-acetylcysteine (NAC), and diclofenac sodium (DCF) from root canals and to assess the effectiveness of the EDDY sonic activation tip in facilitating their removal. MATERIALS AND METHODS: Sixty-six upper central incisors were instrumented using T-Endo Must files (#40.04) and divided into six groups (n = 11) on the basis of the root canal medicament (Ca(OH)2 , NAC or DCF) and medicament removal protocol (needle or EDDY). The residual medicament was evaluated under ×20 magnification using a stereomicroscope. The Kruskal– Wallis test was used to compare the different medicament groups, whereas the Mann–Whitney U-test was employed to compare the needle irrigation and EDDY groups. The statistical significance level was set at 0.05. RESULTS: The highest residual medicament was observed in the Ca(OH)2 group (p < 0.05), with no significant difference between the NAC and DCF groups in the needle irrigation group (p > 0.05). In the EDDY activation group, the DCF group presented the lowest residual medicament (p < 0.05), whereas no significant difference was observed between the Ca(OH)2 and NAC groups (p > 0.05). Compared with needle irrigation, EDDY activation significantly reduced the residual medicament for all the root canal medicaments (p < 0.05). CONCLUSION: EDDY activation significantly reduces residual medicament. DCF resulted in less residual medicament remaining in both the needle and EDDY groups