Dimensional alterations and solubility of new endodontic sealers.
This study evaluated the dimensional alterations and the solubility of two experimental endodontic sealers based on Copaifera multijuga oil-resin (Biosealer) and castor oil bean cement (Poliquil), maintained in different storage solutions. Twenty specimens (3 mm diameter and 2 mm height) of each sealer were assigned to 2 groups (n=10) according to the storage solution: simulated tissue fluid (STF) or distilled water (DW). The specimens were stored in these solutions during 90 days, being removed every 30 days for weighting. The solutions were renewed every 15 days. The results were subjected to statistical analysis by Dunn's and Mann-Whitney tests (a=0.05). The solubility of Poliquil was higher in STF (38.4 ± 36.0) than in DW (28.4 ± 15.0), while Biosealer showed higher solubility in DW (34.61 ± 6.0) than in STF (18.59 ± 8.0). The storage solution influenced the behavior of sealers in relation to the weight variation (p=0.0001). Poliquil presented higher variation of weight independent of the solution (p=0.239). Biosealer also presented higher variation of weight regardless of the solution (p=0.0001). The solubility of Biosealer was different from that of Poliquil, but both sealers showed low solubility in STF. Under the tested conditions, neither of the materials were according to the ADA'S specification.
Rosa
Patrícia Campos Ferreira da
PC
Dental School, São Paulo State University, São José dos Campos, Santana de Parnaíba, SP, Brazil. patycfr@gmail.com
Mancini
Maria Nadir Gasparoto
MN
Camargo
Samira Esteves Afonso
SE
Garrido
Angela Delfina Bittencourt
AD
Camargo
Carlos Henrique Ribeiro
CH
Rode
Sigmar de Mello
Sde M
D002367:Ricinus communis; D003738:Dental Cements / Q000737:chemistry*; D003763:Dental Leakage / Q000517:prevention & control; D018772:Dental Marginal Adaptation; D007887:Fabaceae; D008422:Materials Testing; D010938:Plant Oils / Q000737:chemistry*; D012116:Resins, Plant / Q000737:chemistry*; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012995:Solubility; D018709:Statistics, Nonparametric; D013997:Time Factors
D003738:Dental Cements; D010938:Plant Oils; D012116:Resins, Plant; D012387:Root Canal Filling Materials; C509865:poliquil