Posterior Approximal, part 2

-this blog may be dedicated to the amalgam bunny but it continues to smite me
- posterior approx cavity prep: make sure the whole contact area is cleared but at the same time try to keep margin as small as possible
- line with Vitrebond- perio probe it! and use the perio probe to remove vitrebond off the vertical walls.
- Tofflemayer matrix: open end to gingiva, small circumference to gingiva
- place wedge with flat surface at bottom (remember that it's an isoceles triangle)
- make sure small screw is tight so that tightening of the large screw doesnt pull matrix band out.
- mix amalgam for 7 secs (8 secs= over mixed, 6 sec= dry)
- use carrier to condense the first increment (very, very important!)
- condense increment with sides and tip of your condenser
- push the amalgam towards the marginal ridge to get more bulk there
- marginal ridges cant be too low or too high, must have dip in the middle to be just right
- make sure amalgam capsule is discarded immediately
- scrap amalgam goes in amalgam container
- use meth spirits to wipe down
- place amaglam in small increments to have best condensation but also do this quickly so that it doesnt dry out and harden
- the amalgam in the cavity stays plastic for a lot longer than that in the amalgam cup
- condense like the wind! (with the smallest condenser...)
- use a burnisher to give shine
- carve back the excess mercury amalgam at surface
- make sure you know the shape of your cavity design: and dont leave flash
- carve back with carver along tooth contour so you dont over carve or under carve
- beware of overhangs! (use matrix and wedge properly)
- marginal ridges are a BUGGER. redoing the same cavity 4 times= no fun

NV: finish post approx restorations, amalgamate!