| pericardioperitoneal canal | The portion of the embryonic celom that joins the pericardial cavity to the peritoneal cavity, developing into the pleural cavities. Synonym: pleural canal. (05 Mar 2000) |
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| greater palatine canal | The canalis formed between the maxilla and palatine bones; it transmits the descending palatine artery and the greater palatine nerve. Synonym: canalis palatinus major, pterygopalatine canal. (05 Mar 2000) |
| persistent atrioventricular canal | A condition that is caused when the atrial and ventricular septa fail to meet, as in normal development, resulting in a low atrial and high ventricular septal defect or a common atrioventricular canal. Synonym: endocardial cushion defect. (05 Mar 2000) |
| gubernacular canal | A small canal located between the permanent tooth germ and the apex of the deciduous tooth, containing remnants of dental lamina and connective tissue. (05 Mar 2000) |
| gynecophoric canal | A ventral groove running the length of male schistosome flukes, into which the threadlike female worm fits. (05 Mar 2000) |
| root canal | <dentistry> A procedure where the nerve of a heavily decayed tooth is removed from the tooth replaced with a filling material (08 Jan 1998) |
| root canal file | A pointed, flexible, steel intracanal instrument used in rasping canal walls. (05 Mar 2000) |
| root canal filling materials | Materials placed inside a root canal for the purpose of obturating or sealing it. The materials may be gutta-percha, silver cones, paste mixtures, or other substances. (12 Dec 1998) |
| root canal irrigants | <chemical> Chemicals used mainly to disinfect root canals after pulpectomy and before obturation. The major ones are camphorated monochlorophenol, edta, formocresol, hydrogen peroxide, metacresylacetate, and sodium hypochlorite. Root canal irrigants include also rinsing solutions of distilled water, sodium chloride, etc. Pharmacological action: anti-infective agents, local. (12 Dec 1998) |
| root canal of tooth | The chamber of the dental pulp lying within the root portion of a tooth. Synonym: canalis radicis dentis, marrow canal, pulp canal. (05 Mar 2000) |
| root canal orifice | An opening in the pulp chamber leading to the root canal. (05 Mar 2000) |
| root canal plugger | Fine-tapered root canal instrument, blunt at the tip, used for pressing or forcing a gutta percha cone into a root canal. (05 Mar 2000) |
| root canal preparation | Preparatory activities in root canal therapy by partial or complete extirpation of diseased pulp, cleaning and sterilization of the empty canal, enlarging and shaping the canal to receive the sealing material. The cavity may be prepared by mechanical, sonic, chemical, or other means. (12 Dec 1998) |
| root canal restoration | A gutta-percha, silver, or plastic cone that has been carried into a root canal, either alone or in conjunction with a cement, paste, or solvent, for the purpose of obturating the canal space. (05 Mar 2000) |
| root canal therapy | A treatment modality in endodontics concerned with the therapy of diseases of the dental pulp. For preparatory procedures, root canal preparation is available. (12 Dec 1998) |