Distribution of metal compounds in the tissues of the root of the tooth with apex-foreses (iontophoresis of copper and silver )
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Author(s)
Distribution of metal compounds in the tissues of the root of the tooth with apex-foreses (iontophoresis of copper and silver ) Tatiana Budina
We studied the effect of the degree of patency of the root canal on the distribution of metal compounds in the root canal system and hard tissues of the tooth root after apex-phoresis. The study showed that during apex-phoresis, copper and silver ions enter the sound tooth tissues as a result of anodic dissolution of working-active part of the silver-copper electrode. Moreover, the anode in the electrode space formed acids were formed in perielectode zone which may cause the dissolution of calcium hydroxyapatite Ca5
(PO4) 3 (OH) in the adjacent dentine, causing the release of calcium ions. As a result of electrochemical and chemical processes occurring during apex-phoreses, soluble, poorly soluble and sparingly soluble compounds of silver copper, and calcium are formed. The metal salts are chlorides, sulphides, sulphates, phosphates, as well as a number of complex compounds of copper and silver. These salts line the walls of the root canal
and fill accessory canals, penetrate dentin.
These processes are strictly local taking place only in the area, where the working-active part of the silver-copper electrode is located during the procedure. Therefore, to ensure the saturation of the apical portion of the canal and apical delta with silver and copper, the root canal must be enlarged for at least half of the working length.
The problem of deep disinfection of dentin, deltas of root canals of teeth and obliterations, including complete ones, can be solved only by using the transport of drugs into the root system using direct current. Improvement of the method of electrophoresis of the root system of teeth for this purpose is of great importance for dentistry.
DOI: https://ysmu.am/v2/wp-content/uploads/2023/05/f2b4d8a7-2.pdf The New Armenian Medical Journal Vol.15 (2021), Nо 1 59-66
