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Effect of calcium hydroxide on pH changes of the external medium after intracoronal bleaching
(2011-05-01)
Aim: This in vitro study evaluated the effect of calcium hydroxide on pH changes of the external medium after intracoronal bleaching. Materials and methods: A total of 50 extracted human premolars were prepared and filled ...
Effect of calcium hydroxide on pH changes of the external medium after intracoronal bleaching
(2011-05-01)
Aim: This in vitro study evaluated the effect of calcium hydroxide on pH changes of the external medium after intracoronal bleaching. Materials and methods: A total of 50 extracted human premolars were prepared and filled ...
Evaluation of pulp and paper properties produced from two new bleaching sequences
(2022-01-01)
The pulp and paper industry is increasingly seeking a sustainable and conscientious development, minimizing the environmental impacts caused by it. Therefore, reducing efficiently the number of stages used in the bleaching ...
SUGARCANE BAGASSE PULPING and BLEACHING: THERMAL and CHEMICAL CHARACTERIZATION
(North Carolina State Univ Dept Wood & Paper Sci, 2011-01-01)
Cellulose fibers were isolated from sugarcane bagasse in three stages. Initially sugarcane bagasse was subjected to a pre-treatment process with hydrolyzed acid to eliminate hemicellulose. Whole cellulosic fibers thus ...
SUGARCANE BAGASSE PULPING and BLEACHING: THERMAL and CHEMICAL CHARACTERIZATION
(North Carolina State Univ Dept Wood & Paper Sci, 2011-01-01)
Cellulose fibers were isolated from sugarcane bagasse in three stages. Initially sugarcane bagasse was subjected to a pre-treatment process with hydrolyzed acid to eliminate hemicellulose. Whole cellulosic fibers thus ...
Sugarcane bagasse pulping and bleaching: Thermal and chemical characterization
(2011-08-01)
Cellulose fibers were isolated from sugarcane bagasse in three stages. Initially sugarcane bagasse was subjected to a pre-treatment process with hydrolyzed acid to eliminate hemicellulose. Whole cellulosic fibers thus ...
Analysis of the effect of wash water reduction on bleached pulp characteristics
(Taylor &francis Ltd, 2015-03-04)
The main objective of this study was to analyse cost reduction by reducing the use of fresh water in the cellulose bleaching process and to make it easier to obtain water in a closed circuit. Eucalyptus oxygen delignified ...
The Number of Bleaching Sessions Influences Pulp Tissue Damage in Rat Teeth
(2013-09-23)
Introduction: Hydrogen peroxide tooth bleaching is claimed to cause alterations in dental tissue structures. This study investigated the influence of the number of bleaching sessions on pulp tissue in rats. Methods: Male ...
Ultrasonic activation of internal bleaching agents
(2013-01-01)
Aim: To evaluate the effectiveness of ultrasonic activation of bleaching agents during ex vivo internal bleaching. Methodology: Fifty canine human teeth were artificially stained, root filled and divided into five groups ...
The Number of Bleaching Sessions Influences Pulp Tissue Damage in Rat Teeth
(2013-09-23)
Introduction: Hydrogen peroxide tooth bleaching is claimed to cause alterations in dental tissue structures. This study investigated the influence of the number of bleaching sessions on pulp tissue in rats. Methods: Male ...