PMID- 25025558 OWN - NLM STAT- MEDLINE DCOM- 20141112 LR - 20211021 IS - 1678-7765 (Electronic) IS - 1678-7757 (Print) IS - 1678-7757 (Linking) VI - 22 IP - 3 DP - 2014 Jun TI - Effects of calcium hydroxide addition on the physical and chemical properties of a calcium silicate-based sealer. PG - 180-4 LID - S1678-77572014000300180 [pii] AB - Recently, various calcium silicate-based sealers have been introduced for use in root canal filling. The MTA Fillapex is one of these sealers, but some of its physicochemical properties are not in accordance with the ISO requirements. OBJECTIVE: The aim of this study was to evaluate the flowability, pH level and calcium release of pure MTA Fillapex (MTAF) or containing 5% (MTAF5) or 10% (MTAF10) calcium hydroxide (CH), in weight, in comparison with AH Plus sealer. MATERIAL AND METHODS: The flowability test was performed according to the ISO 6876:2001 requirements. For the pH level and calcium ion release analyses, the sealers were placed individually (n=10) in plastic tubes and immersed in deionized water. After 24 hours, 7 and 14 days, the water in which each specimen had been immersed was evaluated to determine the pH level changes and calcium released. Flowability, pH level and calcium release data were analyzed statistically by the ANOVA test (alpha=5%). RESULTS: In relation to flowability: MTAF>AH Plus>MTAF5>MTAF10. In relation to the pH level, for 24 h: MTAF5=MTAF10=MTAF>AH Plus; for 7 and 14 days: MTAF5=MTAF10>MTAF>AH Plus. For the calcium release, for all periods: MTAF>MTAF5=MTAF10>AH Plus. CONCLUSIONS: The addition of 5% CH to the MTA Fillapex (in weight) is an alternative to reduce the high flowability presented by the sealer, without interfering in its alkalization potential. FAU - Kuga, Milton Carlos AU - Kuga MC AD - Department of Restorative Dentistry, Araraquara Dental School, Univ. Estadual Paulista, Araraquara, SP, Brazil. FAU - Duarte, Marco Antonio Hungaro AU - Duarte MA AD - Department of Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of Sao Paulo, Bauru, SP, Brazil. FAU - Sant'anna-Junior, Arnaldo AU - Sant'anna-Junior A AD - Department of Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of Sao Paulo, Bauru, SP, Brazil. FAU - Keine, Katia Cristina AU - Keine KC AD - Department of Restorative Dentistry, Araraquara Dental School, Univ. Estadual Paulista, Araraquara, SP, Brazil. FAU - Faria, Gisele AU - Faria G AD - Department of Restorative Dentistry, Araraquara Dental School, Univ. Estadual Paulista, Araraquara, SP, Brazil. FAU - Dantas, Andrea Abi Rached AU - Dantas AA AD - Department of Restorative Dentistry, Araraquara Dental School, Univ. Estadual Paulista, Araraquara, SP, Brazil. FAU - Guiotti, Flavia Angelica AU - Guiotti FA AD - Department of Restorative Dentistry, Araraquara Dental School, Univ. Estadual Paulista, Araraquara, SP, Brazil. LA - eng PT - Comparative Study PT - Evaluation Study PT - Journal Article PL - Brazil TA - J Appl Oral Sci JT - Journal of applied oral science : revista FOB JID - 101189774 RN - 0 (Aluminum Compounds) RN - 0 (Calcium Compounds) RN - 0 (Drug Combinations) RN - 0 (Epoxy Resins) RN - 0 (Oxides) RN - 0 (Root Canal Filling Materials) RN - 0 (Silicates) RN - 0 (epoxy resin-based root canal sealer) RN - 0 (mineral trioxide aggregate) RN - 059QF0KO0R (Water) RN - PF5DZW74VN (Calcium Hydroxide) RN - SY7Q814VUP (Calcium) SB - IM MH - Aluminum Compounds/*chemistry MH - Analysis of Variance MH - Calcium/*chemistry MH - Calcium Compounds/*chemistry MH - Calcium Hydroxide/*chemistry MH - Drug Combinations MH - Epoxy Resins/*chemistry MH - Materials Testing MH - Oxides/*chemistry MH - Reference Values MH - Root Canal Filling Materials/*chemistry MH - Silicates/*chemistry MH - Time Factors MH - Viscosity MH - Water/chemistry PMC - PMC4072268 EDAT- 2014/07/16 06:00 MHDA- 2014/11/13 06:00 PMCR- 2014/05/01 CRDT- 2014/07/16 06:00 PHST- 2013/01/08 00:00 [received] PHST- 2014/02/19 00:00 [accepted] PHST- 2014/07/16 06:00 [entrez] PHST- 2014/07/16 06:00 [pubmed] PHST- 2014/11/13 06:00 [medline] PHST- 2014/05/01 00:00 [pmc-release] AID - S1678-77572014000300180 [pii] AID - 10.1590/1678-775720130032 [doi] PST - ppublish SO - J Appl Oral Sci. 2014 Jun;22(3):180-4. doi: 10.1590/1678-775720130032.