title: In vitro study on the softening of gutta-percha cones in endodontic retreatment.
abstract: Softening time of gutta-percha cones was studied in vitro using five chemical solvents: xylol, chloroform, turpentine, eucalyptol, and orange oil. An apparatus which reproduces the penetration force of an endodontic file was used on the sectioned roots of previously filled teeth. The most rapid chemical solvent of gutta-percha cones was chloroform and the slowest was eucalyptol.
authors.affiliation: Departamento de Odontologia Restauradora, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Brazil.
authors.forename: J D
authors.initials: JD
authors.lastname: Pécora
authors.forename: J C
authors.initials: JC
authors.lastname: Spanó
authors.forename: E L
authors.initials: EL
authors.lastname: Barbin
mesh_terms: D000704:Analysis of Variance; D002725:Chloroform; D003511:Cyclohexanols; D000077591:Eucalyptol; D006171:Gutta-Percha / Q000737:chemistry*; D006801:Humans; D008610:Menthol / Q000031:analogs & derivatives; D039821:Monoterpenes; D010938:Plant Oils; D012086:Reoperation; D012390:Root Canal Therapy / Q000379:methods*; D012997:Solvents; D013729:Terpenes; D013997:Time Factors; D014425:Turpentine; D014992:Xylenes
chemical_list: D003511:Cyclohexanols; D039821:Monoterpenes; D010938:Plant Oils; D012997:Solvents; D013729:Terpenes; D014992:Xylenes; D008610:Menthol; D002725:Chloroform; D006171:Gutta-Percha; C087245:orange oil; D000077591:Eucalyptol; D014425:Turpentine