Clinical influence of calcium hydroxide and N-acetylcysteine on the levels of resolvins E1 and D2 in apical periodontitis

Author(s)

Corazza, B. J. M. ^[1] ; Martinho, F. C. ^[2] ; Khoury, R. D. ^[1] ; Toia, C. C. ^[1] ; Orozco, E. I. F. ^[1] ; Prado, R. F. ^[1] ; Machado, F. P. ^[1] ; Valera, M. C. ^[1]

Affiliation

^[1] Sao Paulo State Univ UNESP, Inst Sci & Technol, Endodont Div, Dept Restorat Dent, Eng Francisco Jose Longo 777, BR-12245000 Sao Jose Dos Campos, SP - Brazil

^[2] Univ Maryland, Sch Dent, Dept Adv Oral Sci & Therapeut, Baltimore, MD 21201 - USA

• Document type: Journal article
• Source: International Endodontic Journal; v. 54, n. 1, p. 61-73, JAN 2021.
• Web of Science Citations: 0

Abstract

Aim To investigate the presence of resolvins E1 (RvE1) and D2 (RvD2) in teeth with primary endodontic infections and apical periodontitis, and to assess the influence of calcium hydroxide medication {[}Ca(OH)(2)], in association with 2% chlorhexidine gel (2% CHX gel), and N-acetylcysteine (NAC) on the levels of RvE1 and RvD2 in periapical tissues. Methodology Thirty-six single-rooted teeth with primary endodontic infections and apical periodontitis were selected and randomly divided into three groups according to the medication: {[}Ca(OH)(2)] + saline solution (SSL) {[}Ca(OH)(2) + SSL group] (n = 12), Ca(OH)(2) + 2% chlorhexidine gel {[}Ca(OH)(2) + 2% CHX gel group] (n = 12) and NAC {[}NAC group] (n = 12). Samples were collected from the periapical interstitial fluid at two different sampling times: before (S1) and after 14 days of intracanal medications(S2). Resolvins were measured using the enzyme-linked immunosorbent assay. Data were analysed using paired t-test, Wilcoxon test and Kruskal-Wallis test, followed by Dunn'spost hoctest; all statistical tests were performed at a significance level of 5%. Results RvE1 and RvD2 were detected in 100% of the samples (36/36) at S1 and S2. Ca(OH)(2)medication did not increase the levels of RvE1 or RvD2 (bothP > 0.05); however, NAC significantly increased the levels of RvE1 and RvD2 after 14 days of treatment (P < 0.05). Conclusions RvE1 and RvD2 were detected in periapical tissues from teeth with root canal infections. Moreover, calcium hydroxide medication did not increase the levels of resolvins in apical periodontitis. In contrast, the use of NAC intracanal medication significantly increased the levels of RvE1 and RvD2 after 14 days of treatment. (AU)

• FAPESP's process: 16/26012-3 - Clinical evaluation of different intracanal medications on the periapical levels of resolvins and lipoxin - new endodontic perspectives
• Grantee: Bruna Jordão Motta Corazza
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 18/01703-9 - Primary versus secondary endodontic infection: inflammatory and lipidic profile, microbial load, endotoxin and lipoteichoic acid levels before and during the root canal therapy and success after 18 months follow-up.
• Grantee: Marcia Carneiro Valera Garakis
• Support Opportunities: Regular Research Grants