BURS AND DIAMONDS

# 2 Bur
1. a countersink for the Shooshan pins on the pinledge preparations.
2. a countersink for Shooshan pins where additional retention is needed in conservative preparations.
3. defining lingual extension of OL maxillary molar preparation at gingival.

# 4 or 6 Bur
1. removal of amalgam and caries.
2. removal of composite 'block-out'.
3. relief on a full gold crown preparation which uses a vent pin
4. tooth reduction on the lingual of anterior teeth for pin retained castings.
5. a countersink for larger pin holes.

# 35 Bur
1. Jacobson retention undercuts for amalgam buildups.
2. retentive undercuts for composite 'block-out' material.
3. removal of existing restorative material.

# 56 Bur
1. initial cavity preparation on all premolars for one, two and three surface inlays and onlays.
2. formation of the lingual dovetail on two surface cuspid inlays.
3. cusp reduction for all premolar onlays.
4. placing of the occlusal cavosurface bevel on all premolar inlay preparations.
5. placing of the lingual cavosurface bevel on the dovetail of cuspid inlay preparations.
6 proximal box form on some pinledge preparations.

# 57 Bur
1. initial cavity preparation on all molars for one, two and three surface inlays and onlays.
2. cusp reduction for all molar onlays.
3. placing of the occlusal cavosurface bevel on all molar inlay preparations.
4. reduction of the occlusal surface on all crown preparations.

# 558 Bur - used to smooth pulpal floor

# 168-008 Bur
1. forming the vent hole in a full crown wax pattern.
2. milling the vent hole in a cast gold full crown.

# 169 Bur
1. initial cavity preparation for the slot preparation on the distal of cuspids.
2. placing of the lingual cavosurface bevel on all slot preparations.
3. pulpal wall pin retention where occlusal retention is minimal.
4. proximal box form on some pinledge preparations.
5. enlarging a pin hole for a pinledge restoration which uses a plastic tapered #700 pin in the wax pattern.
6. gingival retention pin hole for hollow ground preparations on the distals of cuspids.

# 171 Bur
1. Occlusal inlay preparations
2. Buccal or lingual inlay preparations

# 7404 Bur
1. placing of the counterbevel on the working cusp of all premolar and molar onlay preparations.
2. formation of the proximal portion of a two-surface cuspid inlay.
3. formation of the buccal and lingual cavosurface margins on all supragingival full crown preparations.
4. supplemental retentive pits placed in the composite 'block-out' material.
5. buccal and lingual finger extensions.
6. marginal ridge overlaying where no adjacent tooth is present.

# 860-012 Diamond (course)
1. reduction of the proximal surfaces for crown preparations where the interproximal space is restricted.
2. hollow ground, proximal reduction for supragingival full crown preparations.
3. proximal reduction on pinledge preparations.

# 860-014 Diamond (course)
1. reduction of the buccal, lingual and proximal walls of full crown preparations.
2. establishing of the subgingival margin on full crown preparations.
3. reduction for æ and 7/8 crown preparations in a similar manner as for a full crown.

# 860-016 Diamond (fine)

#862EF

#379EF-023

finishing fine grooves and concave areas of castings on seating.

.024 in Twist Drill - placement of pin holes for a pinledge restoration.

.7 mm Twist Drill

Heatless Stone - smoothing the lingual concave surface on anterior teeth.