PubMed · 5230570
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1967. Wiped out.. https://pubmed.ncbi.nlm.nih.gov/5230570/
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In this study, I explore the relationship between medicine and dentistry in Ontario between 1868 and 1918. Examination of the rise of dentistry and medical-dental relations reveals that medicine never came to dominate dentistry to the extent it did other health care occupations. The combination of four factors enabled dentistry to avoid outright medical dominance in Ontario. First, dentistry organized and professionalized at approximately the same time as did medicine in Ontario. Second, dentistry's jurisdiction remained somewhat separate from medicine's. Third, unlike other health care occupations, the dental profession never challenged medicine's claims to knowledge or expertise. Fourth, dental and medical leaders shared gender and class backgrounds, identities, and goals that discouraged conflict between them. The importance of these four factors and their implications for future research into inter-professional relations and medical dominance are discussed.
The mercury (Hg) content of dental-operatory wastewater has become an issue in many localities, and Hg removal is rapidly becoming a matter of concern for all dental clinics. This preliminary study tested the efficacy of polymers for the removal of Hg contaminants from the dental-unit wastewater stream. Two commercially available polymers were used to treat dental-operatory wastewater. Used separately, each polymer removed from 74.9% to 88.4% of the Hg from dental-wastewater supernatant. The polymers used in combination, within the recommended pH range, removed up to 99.9% of the total Hg from dental-wastewater supernatant. The estimated optimal concentration of the two polymers is approximately 2.33 ml of each per liter of waste, and more than 90% of the Hg may be removed with 0.13 ml/l. Results indicate that a combination of the two polymers may sufficiently reduce Hg levels to allow discharge of clarified supernatants into public sewer systems.