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Dental Materials - 3 Questions
What is the main advantage of using glass ionomer cements in dentistry?1) High compressive strength2) Chemical bonding to tooth structure3) Low cost4) High aesthetic appeal
Glass ionomer cements are known for their ability to chemically bond to tooth structure, particularly dentin and enamel.
What is the general source of the substance used in irreversible hydrocolloid impression material?1) Synthetic polymer2) Plant resin3) Brown seaweed4) Petroleum by-product
The material is derived from the structural formula of anhydro-?-d-mannuronic acid, which is extracted from certain types of brown seaweed.
What is the function of ZnO in Gutta Percha?1) To increase flexibility2) To improve thermal insulation3) To enhance radio-opaque properties4) To form the matrix of Gutta Percha
ZnO is a filler in Gutta Percha, and it improves the strength and flexibility of the material.
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