Condensation And Carving Of Amalgam Restorations Flashcards Quizlet All amalgam increments are condensed in the following manner: a. condensation is started in the middle of the cavity preparation and directed toward the vertical walls in a "stepping" motion. (fig 2.) i. "stepping" is the overlapping of condenser nib impressions in the amalgam to assure complete condensation. b. 1. triturate amalgam for 8 seconds 2. condensation time= 3.5 mins or less 3. condense in proximal box (use smaller end of condenser first 4. condense to excess and start burnishing 5. carving starts when there is resistance to carver by amalgam (not when amalgam is soft) 6. do not carve deep grooves occlusally 7.
Condensation And Carving Of Amalgam Restorations Flashcards Quizlet Operators should have a mental image of outline form of preparation before condensing amalgam to aid in locating cavosurface margins during carving procedure. condensation squeezes unreacted mercury out of the increments building up the restoration.(3mins). Proportioning, trituration, condensation, carving, and finishing and polishing of the restoration are essential steps. selection of alloy. spherical amalgam provides soft consistency, requiring light condensation force, and is recommended for restoring pulp capped teeth and adapting around pins. The matrix band should be removed after condensation of the amalgam but prior to the final carving of the restoration. this is because the wedge compensates for the thickness of the matrix band • both the statement and the reason are correct and related • both the statement and the reason are correct but not related. Q. low copper amalgam vs high copper amalgam: study these flashcards. a. low <12% cu, has y2 phase (weakest, corrosion prone phase), more vulnerable to marginal breakdown and creep. high >12% cu, sufficient cu to prevent y2 phase (stronger, more corrosion resistant), minimized marginal breakdown and creep. 41.
Class I And V Amalgam Restorations Flashcards Quizlet The matrix band should be removed after condensation of the amalgam but prior to the final carving of the restoration. this is because the wedge compensates for the thickness of the matrix band • both the statement and the reason are correct and related • both the statement and the reason are correct but not related. Q. low copper amalgam vs high copper amalgam: study these flashcards. a. low <12% cu, has y2 phase (weakest, corrosion prone phase), more vulnerable to marginal breakdown and creep. high >12% cu, sufficient cu to prevent y2 phase (stronger, more corrosion resistant), minimized marginal breakdown and creep. 41. Condensation and carving instruments to develop proper tooth anatomy. you can smooth the surface of a restoration by wiping over the amalgam with a cotton ball or cotton roll saturated with water (assuming the amalgam is partially set). p.s.: newly placed amalgam restorations may fracture at the marginal ridge because of the following reasons:. List two indications for finishing and polishing amalgams. 6. discuss the possible results of poor amalgam placement and carving. 7. assess an amalgam restoration to determine whether it needs replacement or finishing and polishing. 8. differentiate between the procedures of amalgam finishing and amalgam polishing. 9.
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