نتایج جستجو برای: pulp exposure

تعداد نتایج: 326917  

2006
Jennifer A. Fentress Stacy L. Steele Henry L. Bart Ann Oliver Cheek

Worldwide, wild fish living in rivers receiving municipal and industrial discharges may experience endocrine disruption as a result of exposure to anthropogenic pollutants. The purpose of this study was to evaluate the hormonal status of wild fish in a U.S. river receiving unbleached kraft and recycled pulp mill effluent (Pearl River at Bogalusa, LA). We evaluated two alternative hypotheses: th...

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2010
Masoud Fallahinejad Ghajari Tahereh Asgharian Jeddi Sonay Iri Saeed Asgary

INTRODUCTION The aim of this trial was to compare clinical and radiographic success rates of direct pulp capping (DPC) using a novel biomaterial called Calcium Enriched Mixture (CEM) cement versus Mineral Trioxide Aggregate (MTA) in primary molar teeth. MATERIALS AND METHODS In this randomized clinical trial 42 deciduous molars in 21 patients who had at least two teeth requiring DPC, were tre...

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2009
Saeed Asgary Sara Ehsani

The aim of this case series was to determine the clinical and radiographic success rate of pulpotomy, with new endodontic cement (NEC), in human mature permanent molar teeth. Twelve molars with established irreversible pulpitis were selected from patients 14 - 62 years old. The selection criteria included carious pulp exposure with a positive history of lingering pain. After isolation, caries r...

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2006
David McLean Neil Pearce Hilde Langseth Paavo Jäppinen Irena Szadkowska-Stanczyk Bodil Persson Pascal Wild Reiko Kishi Elsebeth Lynge Paul Henneberger Maria Sala Kay Teschke Timo Kauppinen Didier Colin Manolis Kogevinas Paolo Boffetta

The objective of this study was to evaluate cancer mortality in pulp and paper industry workers exposed to chlorinated organic compounds. We assembled a multinational cohort of workers employed between 1920 and 1996 in 11 countries. Exposure to both volatile and nonvolatile organochlorine compounds was estimated at the department level using an exposure matrix. We conducted a standardized morta...

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Journal: :British journal of industrial medicine 1989
P K Henneberger B G Ferris R R Monson

Cause specific mortality was analysed among 883 white male workers from a paper company in Berlin, New Hampshire. Subjects were assigned to different exposure groups on the basis of their having worked in the pulp mill, the paper mill, or elsewhere in the paper company. A standardised mortality ratio (SMR) analysis was used to compare death rates for each of the exposure groups with United Stat...

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Journal: :Environmental toxicology and chemistry 2002
L Mark Hewitt Shirley Anne M Smyth Monique G Dubé Christine I Gilman Deborah L MacLatchy

Previous studies have identified chemical recovery condensates as a primary source of hormonally active substances within a Canadian bleached kraft pulp mill. Although reverse osmosis treatment of condensates raises the exposure threshold that alters circulating levels of testosterone in mummichog (Fundulus heteroclitus), the responsible chemicals have not been characterized. In this study, a s...

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2003
J. D. WAKEFIELD G. J. THORBECKE

Active germinal centers are recognized as areas of rapidly proliferating blast cells in the white pulp of the spleen and in the cortex of lymph nodes. The origin and life history of these cells, their relationship to the surrounding mantle zone of small lymphocytes and, in particular, the functional significance of these two groups of cells is still unknown. Flemming (1) has proposed that germi...

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Journal: :Occupational and Environmental Medicine 1964

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Journal: :Journal of Endodontics 2020

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Journal: :Journal of Dental Research 2015

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