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1 mm depth
cutters can be used to ensure correct anatomical preparation for the recommended
minimum reduction of 1.22 mm for buccal and lingual surfaces and 1.88 mm
to 2.0 mm for incisal areas (ISO shape 072,size 76). Additional water cooling
required. |
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Depth
marking can be made with the 1 mm depth cutters and the 1.4 mm torpedo bur
to ensure correct anatomical preparation also in the case of posterior teeth
for the recommended minimum reduction of 1.22 mm for buccal and lingual
surfaces and 1.88 mm to 2.0 mm for occlusal areas (ISO shape 072, size 036
(additional water cooling required!) and ISO shape 289 [illustrated]/290,
size 014). |
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| Incisal
reduction and proximal preparation tending to an approximal chamfer using
a torpedo bur (ISO shape 289 [illustrated]/290, size 014). Matrix bands
may be needed to protect adjacent teeth. |
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| Occlusal
reduction of hard tooth enamel (ISO shape 277, size 023), and proximal preparation
tending to an approximal chamfer are carried out using the torpedo bur.
( ISO shape 289, size 014). Matrix bands may be needed to protect adjacent
teeth. |
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014 torpedo bur is used to produce a slightly tapered preparation and to
form a circular chamfer. For sufficient reduction or oral occlusial surfaces
and rounding edges use the ISO shape 277, size 023. |
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| The 014 torpedo
bur is used to produce a slightly tapered preparation and to form a circular
chamfer. |
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| Final check
and finishing:ensure anatomical chamfer preparation without edges or undercuts.
Produce a smooth surface of the preparation by using identically shaped
carbide finishing burs (ISO version 072) at a speed of 15,000-max. 40,000
rpm. or identically shaped extra -fine diamond finishing burs (ISO version
504). |
Final check
and finishing: ensure anatomical chamfer preparation without edges or undercuts.
Produce a smooth surface of the preparation using identically shaped carbide
finishing burs (ISO version 072) at a speed of 15,000-max. 40,000 rpm, or
identically shaped extra fine-diamond finishing burs (ISO version 504). |
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