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Takahashi CM, Cunha RS, de Martin AS, Fontana CE, Silveira CF, da Silveira Bueno CE.Takahashi CM, et al.J Endod. 2009 Nov;35(11):1580-3. doi: 10.1016/j.joen.2009.07.015.J Endod. 2009.PMID: 19840652Clinical Trial.