Effect of Citric Acid on Color Changes of Calcium Silicate-Based Cements an In Vitro Study

The aim of the present in vitro study was to investigate effects 10% and 40% citric acid (CA) on color calcium silicate–based cements (CSCs) comparison common root canal irrigants. Samples six CSCs (n = 6)—ProRoot MTA (Dentsply, Tulsa, OK, USA), Biodentine (Septodont, Saint-Maur-des-Fossés, France), Plus (Avalon Biomed Inc, by Prevest Denpro Limited, Jammu, India), Repair HP (Angelus, Londrina, PR, Brazil), Ortho (BioMTA, Seoul, Korea), Retro Korea)—were immersed CA as well 15% EDTA, 2% NaOCl, CHX, 0.9% NaCl for 15 min, 1 h, 24 h. ΔE values, representing difference between final baseline values components, were then determined using a VITA Easyshade Compact 5.0 spectrophotometer. Naked-eye evaluation changes structures materials performed our own scale. Upon immersion both CA, there statistically significant differences spectrophotometric measurement results all (P < 0.05). However, does not cause dark discoloration, observable with naked eye, any materials, such NaOCl CHX. Significant statistical also found terms submersion duration which could be an alternative EDTA use, caused greater discoloration changed some their structures. Unless required therapeutic procedure, clinicians should pay attention fact that irrigant may affect minimize contact time CSCs.