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Quantitative chemical study of root canal preparations with calcium hydroxide
Author(s) -
Cohen Florence,
Lasfargues JeanJacques
Publication year - 1988
Publication title -
dental traumatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.82
H-Index - 81
eISSN - 1600-9657
pISSN - 1600-4469
DOI - 10.1111/j.1600-9657.1988.tb00306.x
Subject(s) - calcium hydroxide , calcium carbonate , chemistry , titration , root canal , carbonatation , carbonate , carbonation , mineralogy , nuclear chemistry , dentistry , inorganic chemistry , medicine , organic chemistry
Chemical tests were carried out in order to determine the rate of carbonatation of different samples of calcium hydroxide used in intracanal therapeutics. The methods were based either on direct measurement of the kinetics of CO 2 fixation by dry powder or on analytical titration of the carbonate content of fresh and aged samples. Dry powder preserved in closed flasks and paste preparations packed in screw syringes were free from carbonate even after several years. When samples were exposed to open air the rate of carbonatation was extremely slow. The carbonate formation in normal clinical conditions of calcium hydroxide utilization seemed not to be responsible for the variability sometimes observed in clinical results.