Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology, 2004
Objective. The purpose of this study was to investigate the pulpal response of dogs' teeth after ... more Objective. The purpose of this study was to investigate the pulpal response of dogs' teeth after pulpotomy and direct pulp protection with MTA Angelus, ProRoot, Portland cement and white Portland cement. Study design. Seventy-six teeth were treated with these materials. One hundred twenty days after treatment, the animals were sacrificed and the specimens removed and prepared for histological analysis.
The aim of this study was to evaluate the influence of calcium chloride (CaCl 2 ) on the sealing ... more The aim of this study was to evaluate the influence of calcium chloride (CaCl 2 ) on the sealing ability of three Mineral Trioxide Aggregate (MTA) cements, ProRoot MTA, MTA-Angelus, and radiopaque White Portland cement (WPC), for retrograde root filling. Seventy roots of extracted single-rooted teeth were instrumented and obturated. After sectioning the samples at 2 mm from the apex, they received one layer of Araldite and two coats of nail enamel, except for the apical dentinal surface submitted to apicectomy. Standardized retrograde cavities were prepared, filled with one of the materials, and immersed in 0.2% Rhodamine B solution for 72 hours. Dye leakage was analyzed on a light microscope with ocular micrometer. Kruskal-Wallis and Miller tests were used to compare groups arranged in increasing order of leakage, according to mean rank of scores: WPCϩCaCl 2 , MTA-AngelusϩCaCl 2 , ProRoot MTAϩCaCl 2 , MTA-Angelus, ProRoot MTA, and WPC. CaCl 2 improved the sealing ability of all three MTA cements. (J Endod 2006;32:897-900)
This paper surveys gender and ethnic wage gaps in 18 Latin American countries, decomposing differ... more This paper surveys gender and ethnic wage gaps in 18 Latin American countries, decomposing differences using matching comparisons as a non-parametric alternative to the Blinder-Oaxaca (BO) decomposition. It is found that men earn 9-27 percent more than women, with high cross-country heterogeneity. The unexplained pay gap is higher among older, informal and self-employed workers and those in small firms. Ethnic wage differences are greater than gender differences, and educational attainment differentials play an important role in explaining the gap. Higher ethnic wage gaps are found among males, singleincome generators of households and full-time workers, and in rural areas. An important share of the ethnic wage gap is due to the scarcity of minorities in highpaid positions.
Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology, 2004
Objective. The purpose of this study was to investigate the pulpal response of dogs' teeth after ... more Objective. The purpose of this study was to investigate the pulpal response of dogs' teeth after pulpotomy and direct pulp protection with MTA Angelus, ProRoot, Portland cement and white Portland cement. Study design. Seventy-six teeth were treated with these materials. One hundred twenty days after treatment, the animals were sacrificed and the specimens removed and prepared for histological analysis.
The aim of this study was to evaluate the influence of calcium chloride (CaCl 2 ) on the sealing ... more The aim of this study was to evaluate the influence of calcium chloride (CaCl 2 ) on the sealing ability of three Mineral Trioxide Aggregate (MTA) cements, ProRoot MTA, MTA-Angelus, and radiopaque White Portland cement (WPC), for retrograde root filling. Seventy roots of extracted single-rooted teeth were instrumented and obturated. After sectioning the samples at 2 mm from the apex, they received one layer of Araldite and two coats of nail enamel, except for the apical dentinal surface submitted to apicectomy. Standardized retrograde cavities were prepared, filled with one of the materials, and immersed in 0.2% Rhodamine B solution for 72 hours. Dye leakage was analyzed on a light microscope with ocular micrometer. Kruskal-Wallis and Miller tests were used to compare groups arranged in increasing order of leakage, according to mean rank of scores: WPCϩCaCl 2 , MTA-AngelusϩCaCl 2 , ProRoot MTAϩCaCl 2 , MTA-Angelus, ProRoot MTA, and WPC. CaCl 2 improved the sealing ability of all three MTA cements. (J Endod 2006;32:897-900)
This paper surveys gender and ethnic wage gaps in 18 Latin American countries, decomposing differ... more This paper surveys gender and ethnic wage gaps in 18 Latin American countries, decomposing differences using matching comparisons as a non-parametric alternative to the Blinder-Oaxaca (BO) decomposition. It is found that men earn 9-27 percent more than women, with high cross-country heterogeneity. The unexplained pay gap is higher among older, informal and self-employed workers and those in small firms. Ethnic wage differences are greater than gender differences, and educational attainment differentials play an important role in explaining the gap. Higher ethnic wage gaps are found among males, singleincome generators of households and full-time workers, and in rural areas. An important share of the ethnic wage gap is due to the scarcity of minorities in highpaid positions.
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