title: Volumetric expansion of gutta-percha in contact with eugenol.
abstract: The aim of this study was to compare the volumetric expansion of gutta-percha in the presence of eugenol or physiologic saline over time. Sections of gutta-percha cones were scanned to determine their total volume and surface area. They were then placed in sealed test tubes with either 2 microL eugenol or 2 microL saline and allowed to soak for 24 hours, 7 days, or 30 days. The results were scanned again to determine the volumetric changes in the material after placement in the test solutions. The results were statistically analyzed by using t tests and analysis of variance. Specimens soaked in eugenol showed a dramatic increase in volumetric expansion versus the saline group at all time periods. Sealers that incorporate eugenol could be attributed to gutta-percha volumetric expansion over time, thereby creating a better seal of the obturation material.
authors.affiliation: Department of Endodontics, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
authors.forename: Rick A
authors.initials: RA
authors.lastname: Michaud
authors.forename: John
authors.initials: J
authors.lastname: Burgess
authors.forename: Robert D
authors.initials: RD
authors.lastname: Barfield
authors.forename: Deniz
authors.initials: D
authors.lastname: Cakir
authors.forename: Sandre F
authors.initials: SF
authors.lastname: McNeal
authors.forename: Paul D
authors.initials: PD
authors.lastname: Eleazer
mesh_terms: D005054:Eugenol / Q000737:chemistry*; D006171:Gutta-Percha / Q000737:chemistry*; D006801:Humans; D021621:Imaging, Three-Dimensional; D007101:Immersion; D008422:Materials Testing; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012965:Sodium Chloride; D013499:Surface Properties; D013997:Time Factors
chemical_list: D012387:Root Canal Filling Materials; D005054:Eugenol; D012965:Sodium Chloride; D006171:Gutta-Percha