wedge and tofflemire

usually 5-6 mm

length of wedge

→ adapted AT OR SLIGHTLY GINGIVAL to the gingival floor

location of wedge

prevents overhang of the amalgam restoration

purpose of wedge

wedge

space created by the wedge COMPENSATE for the space created by the THICKNESS OF THE MATRIX BAND (0.0015 in)

1. According to size

2. According to shape (triangular, round, etc.)

3. According to material (wooden, plastic, rubber)

classification of wedge

round wedge

shape of wedge to use for ideal tooth prep

round wedge

→ usually the wedge of choice with CONSERVATIVE PROXIMAL BOX

more occlusal

round wedge creates a wedging action that is {?]

wedge should be positioned as NEAR TO THE GINGIVAL MARGIN without being occlusal to it

how does a round wedge become effective

1. Break off approximately ½ in (1.2 cm) of a round toothpick

2. Grasp the BROKEN END of the wedge with a PLIER

3. Insert the POINTED TIP from the LINGUAL OR FACIAL EMBRASURES, slightly gingival to the gingival margin

4. Gingival aspect of the wedge may be LIGHTLY LUBRICATED to facilitate its placement

insertion of round wedge

a second (smaller) wedge may be placed on top of the first wedge

solution if a round wedge becomes too apical

triangular wedge

wedge recommended for preparations with a deep gingival margin

preparations with deep gingival margins

triangular wedge is recommended for?

tofflemire and matrix band

the use of triangular wedge is indicated with?

1. The triangular wedge is positioned similarly to the round wedge

2. Base of the triangular wedge will engage the tooth GINGIVAL to the margin WITHOUT EXCESSIVE TISSUE DISPLACEMENT

insertion of triangular wedge

hollenback carver

FOR DIFFICULT DEEP GINGIVAL RESTORATIONS: Supporting the matrix material with a [?] during insertion may be helpful

1. Slotted guide (head)

2. Sliding Body/ Car Pin (pointed spindle) Slot

3. Adjusting/Inner knob (Larger knurled nut)

4. Locking/Outer knob (Smaller knurled nut, locking vise)

parts of a tofflemire