| 3G Full-Coverage Crown |
Preparation
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Recommended tooth reduction is 1.0 mm axially and 1.5 - 2.0 mm incisally/occlusally. End the preparation in an extended shoulder (90o) with a rounded internal gingivoaxial line angle. Place the margin at the gingival crest. Round any sharp points or line angles. Remove undercuts to allow an uninterrupted direct path of insertion (fit should be passive)
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Cementation
An abbreviated technique follows.
Step 1: remove the provisional restoration. Clean and dry the site
Step 2: verify the fit of the restoration utilizing a try-in paste or glycerin
Step 3: isolate the prepared tooth with a rubber dam and retainer
Step 4: apply and light-cure the dental adhesive
Step 5: treat the internal aspects of the restoration with a silane coupling agent
Step 6: apply an aesthetic resin cement to the surface of the restoration
Step 7: seat the restoration and remove gross excess cement
Step 8: light-cure the entire restoration from all surfaces
Step 9: adjust and finish with fine diamonds and polishers
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