FPD Flashcards
330 pear bur
depth cuts
699 bur
interproximal cuts
8856.014 diamond
smothing chamfer margins and general finishing
8847.016KR and 8847.012 diamond
smoothing shoulder margins and general finishing
margin deisng: chamfer ideal width: 0.5mm
maximum width: less than or equal to 1.0 mm at any point on margin circumference
margin design
margin design: chamfer
ideal margin location: .5mm above stimulated gingiva
margin design
occlusal reduction ideally 1.5mm
range: +/- 0.5mm beyond ideal
margin design
occlusal convergence: range: 6-16 degrees
margin design
buccal reduction:
reduce functional cusp 2 planes
margin design - 28
buccal margin design:
shoulder is formed as the negaive image of a flat-ended shoulder diamond
using a shoulder bur will create a nearly right angle margin beginning at the axial wall and extending to the cavosurface of the tooth
ideal width: 1 mm, range: +/- 0.5 mm beyond ideal
width: the shoulder margin should be no wider than the width of 847.016 KR bur tip
margin design - 28
lingual margin design: chamfer
same as 30
856.016 chamfer diamond
margin design - 28
occlusal reduction ideally 2mm
range: +/- 0.5 mm beyond ideal
margin design - 28
occlusal convergence: 6 - 16 degrees
interproximal bur
850 012 contact diamond bur