Presentation from Prof Paul A. Tipton, for Smile GB, on porcelain inlays & onlays

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Prepare LL6 for porcelain inlay
Tooth preparation

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Create 10-15
degrees mesial and
distal axial wall
preparations
(overall
convergance angle
of 20-30 degrees)
break the contact at
the gingival floor of
the boxes with the
adjacent tootheak the

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Porcelain/Composite Inlays
Porcelain/Composite Onlays
Tooth preparation

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Porcelain/Composite Onlays
When the cavity walls reach the
cusp tips or if the cusps are
undermined - they need capping
Tooth preparation

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Prepare 2mm off the
cusps to be capped
using depth cut burs

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Prepare 1.5mm wide deep
chamfer buccally 1mm
below the contact with the
opposing tooth

16. Dr. Paul A. Tipton
Ensure there are no steps
around the margin of the
preparations

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Cut an extra 0.5mm functional cusp bevel
off the lower buccal cusps – at 45
degrees to the long axis of the tooth

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Round off all cusps
so that there are
NO sharp edges
internally

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