General Dent istry RDA Written State B oard Exam Study and possible Questions with Verified Solutions Rated A. Cavity varnish does NOT: ✔✔*stimulate secondary dentin *Have properties for thermal insulation What is most commonly used to apply cavity varnish: ✔✔Cotten pellets What is not a procedure for applying copal varnish: ✔✔*apply only on exposed walls *Apply all coats and then dry area The most irritating of the dental cements is: ✔✔Zinc phosphate *Zinc oxide -eugenol w/ additives is least irritating Prior to placement of an amalgam restoration, a base may be placed in the cavity as a thermal insulator: ✔✔Zinc oxide eugenol additives and zinc phosphate What type of base CANNOT be used with acrylic or composite restorations: ✔✔*zinc -oxide eugenol *zinc phosphate Zinc oxide eugenol with additives is used as a: ✔✔*thermal insulator *Sedative base *Temporary restoration *Luting agent If zinc -oxide eugenol w/ additives is mixed too thin it: ✔✔Becomes weak When applying zinc phosphate cement as a base to restore a deep preparation floor: ✔✔*apply calcium hydroxide as a liner prior to placing the base *Apply varnish before & after the zinc phosphate base calcium hydroxide is used primarily to: ✔✔Promote secondary dentin formation Advantages of calcium hydroxide are: ✔✔*ease of manipulation *The ability to stimulate the production of secondary dentin *Compatibility w/all restorative materials A cavity varnish is applied to the: ✔✔*Walls & margins of a cavity prep. *Floor of the cavity prep. *Dentinal tubules *Enamel walls Calcium hydroxide is used because it: ✔✔*seals dentinal tubules *Compatible with all dentinal restorative materials *Stimulates the formation of secondary dentin If there is a very deep preparation, choose the sequence of application starting with the material that is closest to the pupal floor: ✔✔#1 calcium hydroxide #2 varnish #3 zinc phosphate #4 varnish #6 amalgam Characteristics of glass ionomer, as an insulating base are: ✔✔*fluoride releasing product *excellent bond between the restoration and dentin Charactetistics of light cured urethane diemethacrylate include: ✔✔*ideal under a composite restoration *fluoride releasing properties *radiopaque *ease of application
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