Bizopen Diamond Bur Chamfer 862-016 Fine Grit

The Bizopen Diamond Bur Chamfer 862-016 Fine Grit is the definitive margin refinement instrument in crown preparation sequences where chamfer finish line precision and smoothness directly determine impression accuracy and ceramic restoration fit. The chamfer-specific geometry — a modified tapered cylinder with a chamfer-producing end profile — is designed to place the preparation finish line at consistent depth and with a consistent internal margin angle in a single sweeping motion along the preparation margin. Bizopen’s fine 220 grit diamond coating delivers the reduced surface roughness that final margin preparation requires — the smooth preparation surface produced by the 862-016 fine chamfer bur requires minimal additional finishing before impression taking and provides the accurate margin reproduction that both conventional polyvinyl siloxane and digital intraoral scanner impression systems demand. At 1.6 mm maximum working diameter, the chamfer bur provides the radial extent needed for complete posterior crown margin preparation without requiring multiple overlapping strokes that can produce an uneven margin depth profile. The fine grit specification cuts more slowly than standard grit equivalents but provides the precision and surface quality control that finish line preparation requires — the 862-016 is indicated as the final instrument in a three-instrument crown preparation sequence following coarse and standard grit reduction. FG shank. ISO 806 314 168 524 016. Maximum working diameter: 1.6 mm. Working length: 5.5 mm.