EFDA study cards Test Questions and
Answers
Polycarboxylate Cement - ANSWER One of the first cements to provide an
adhesive bond to teeth
When mixing cement, mix liquid into powder or powder into liquid? - ANSWER
Powder into liquid-in small amounts
To remove cement interproximally when ceme...
EFDA study cards Test Questions and Answers Polycarboxylate Cement - ANSWER One of the first cements to provide an adhesive bond to teeth When mixing cement, mix liquid into powder or powder into liqu id? - ANSWER Powder into liquid -in small amounts To remove cement interproximally when cementing a permanent restoration, what should you do? - ANSWER Tie a knot in the floss & pass it through the contact What type of ZOE lacks strength & long term durability? - ANSWER Type 1 -Temp cement This type of cement is a hybrid of silicate and polycarboxilate cement. - ANSWER Glass ionomer What material is supplied as a paste/paste sys and also in cartridges? - ANSWER Polyether What does elastomeric mean? - ANSWER Having elastic o r rubber -like qualities An alginate absorbing excess water is called what? - ANSWER Imbibition What is a final impression used for? - ANSWER An accurate reproduction of teeth & surrounding tissue What is a negative reproduction of dental arc hes & surrounding tissues? - ANSWER Impression At what point in a procedure is a Mylar matrix placed? - ANSWER Before etching Tofflemire is positioned from what surface? - ANSWER Buccal/facial Where is the wedge inserted to position th e matrix band firmly against the gingival margin? - ANSWER Lingual What inst are used to contour a matrix band? - ANSWER Burnisher or mirror handle What is a matrix band made of? - ANSWER Thin flexible steel Material most commonly used for provisional coverage - ANSWER Self-curing acrylic Most common type of temp coverage for a crown & bridge. - ANSWER Custom provisional Why only intermittent pressure on a tooth when polishing? - ANSWER Heat dissipates between strokes Course, extra course, medium, fine & extrafine are different ___ of polishing paste? - ANSWER Grits Removal of calculus, debris, stain & plaque from teeth - ANSWER Oraly Prophy Where on the tooth do you begin to use the Prophy cup? - ANSWER Gingival third What is the diff between catalyst & base? - ANSWER Base -basic ingredient of material Catalyst -increases the rate of chem re action(makes it set) Would you use a polymer crown on an anterior tooth? Why? - ANSWER Yes! Cause it's tooth colored What will alter the consistency of cement? - ANSWER Amount of powder Three sets that alginate comes in - ANSWER Regula r, slow & fast What are two parts of a model? - ANSWER Base & art Most common intermediate restorative material - ANSWER IRM has sedative effect to pulp w/eugenol To dissipate the heat from zinc phosphate while mixing, what should you do? - ANSWER Spatulate over a wide area on a cool glass slab ZOE for temp cement should look like this after mixing in how much time? - ANSWER Smooth & creamy in 20 -30 sec What type of ZOE has reinforcing agents that have been added for strength? - ANSWER Type 2 Glass ionomer - ANSWER Type 1 -cementation of metal restoration Type 2 -restoring erosion near gingiva
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