An investigation into the ability of a solvent containing cement to produce a homogenous mass of gutta percha
Marshall, Michael J.
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The purpose of this study was to determine if the eucalyptol content of Wach's paste, in conjunction with the pressures of lateral condensation, was sufficient to produce a homogenous mass of gutta percha. Twenty anterior teeth were cleaned and shaped according to a standard technique. The samples were obturated with laterally condensed gutta percha, employing Wach's paste as the sealer. The teeth were divided into two groups. The six samples in Group 1 were sectioned with a diamond saw, while the fourteen samples in Group 2 were decalcified and sectioned with a razor blade. The cross sections were observed, at 25X magnification, with a light microscope. The samples were visualized before and after the application of Pelikan ink. The results of the study were as follows: Observation of the samples in Group 1, in which a rotary diamond saw had been employed to cut the dentin of natural hardness, suggested that a solid mass of gutta percha had been produced. However, observation of the samples in Group 2, in which the teeth were first decalcified and then easily sectioned with a sharp razor blade, demonstrate explicitly that a homogenous mass of gutta percha was not produced, at any level. The following conclusions were drawn: (1) The solvent containing cement, Wach's paste, in conjunction with the pressures of lateral condensation, does not produce a homogenous mass of gutta percha. (2) The method of sectioning the teeth is critical to the reliability of results. (3) Wach's paste has a similar color to dental gutta percha, which may add to the false impression of a homogenous mass. (4) Eucalyptol may not be present in sufficient quantities in Wach's paste to produce a homogenous mass of gutta percha, in combination with the pressures of lateral condensation.
PLEASE NOTE: This work is protected by copyright. Downloading is restricted to the BU community: please click Download and log in with a valid BU account to access. If you are the author of this work and would like to make it publicly available, please contact firstname.lastname@example.org.Contains colored photographs.Thesis (M.Sc.D.)--Boston University, Henry M. Goldman School of Graduate Dentistry, 1985 (Endodontics)Bibliography : leaves 80-95.
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