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Zinc-Based Cements Research Paper

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ZINC BASED WASTES
A study by Leirskar and Helgeland reveals that zinc based cements can be cytotoxic and damaging to the animal cells although zinc is required for the optimal growth and development of all living organisms from micro-organisms to man.Zinc exists in dentistry in the form of used/unused (leftovers) of:Base material (Zinc oxyphosphate,Zinc polycarboxylate,Zinc oxide eugenol), Temporary cements (Zinc oxideeugenol, Zinc polycarboxylate), Permanent restorative cement (Zinc oxide eugenol Type II, Zinc Oxyphosphate, Zinc Polycarboxylate), Impression materials etc.11,18,19
Management includes:
The used/unused zinc based products should not be put down the drain or sewer system to avoid aquatic toxicity rather it should be treated as soiled waste and handed over to CWC for proper management.

GYPSUM BASED WASTES
Gypsum products consist of calcium sulfate dihydrate (CaSO4.2H2O). In dental clinics/hospitals it is used in fabrication of dies (casts) from the dental …show more content…

Infected plastic waste from dental clinic may be such as plastic part of syringe, gloves, riles tube, drip set, blood bag, plastic glucose bottles, impression trays etc. Non-infected plastic waste includes used water bottles, disposable tea cups, polythene bags, wrapper of gloves and other materials etc.26
Management includes:
Infected plastic waste should be collected separately in different color coded bin than non-infected plastic waste which should be collected in bin of general non-infected waste. Plastic should never be burn in open or closed chamber because it produces dioxinand furans which isbio-accumulative as well as carcinogenic so, infected plastic waste should be autoclaved, shred and then can be given to local vendor to recycle. Non-infected plastic waste can be handed over to municipality and then can be separated manually and recycle. 26

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