http://www.dentistx.com/upload/forum/200701/20070127013006ww.jpg
1. Preparation for an anterior
crown is preformed with a coarse diamond bur; facial reduction of
0.8 mm to 1.5 mm must be achieved.
2. For the anterior all-ceramic crown, lingual
reduction of .8 mm to 1.5 mm must be performed with a
football-shaped bur.
http://www.dentistx.com/upload/forum/200701/20070127013111vu.jpg
3. Preparation of the
posterior all-ceramic crown requires at least 0.8 mm to 1.5 mm of
reduction on the buccal and lingual aspects.
4. require reduction of at least 1.5 mm from the
deepest occlusal pit.
http://www.dentistx.com/upload/forum/200701/200701270131573u.jpg
5. at least 0.8 mm to 1.5 mm
of reduction should be performed facially and lingually
6. The multiunit anterior bridge should also have
at least 1.5 mm of occlusal and incisal reduction, and it should
have rounded internal line angles
http://www.dentistx.com/upload/forum/200701/20070127013236nu.jpg
7. in the anterior and
posterior require a taper of at least 3 degrees.
8. also require at least 0.8 mm to 1.5 mm of
buccal and lingual reduction.
http://www.dentistx.com/upload/forum/200701/20070127013324k7.jpg
9. The clinician can utilize a
chamfer margin design when preparing abutment teeth for the
all-ceramic bridge.
10. A shoulder margin design can also be used to
prepare abutment teeth for the all-ceramic briddge
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