Page 53 - COS-FOD2015

Ab Ghani et al.

Figure: 2A- Tooth preparation for Figure: 2B- Tooth preparation for bonded
bonded all-ceramic crown on 21 (Case all-ceramic crown on 21 with composite core
and fiber post (Case 2)

Figure: 3A- Crown 21 before and after characteristics staining (Case 1)

Figure: 3B- Crown 21 before and after characteristics staining (Case 2)

master impressions, face bow transfers and bite Direct chair-side staining of all-ceramic crowns.
registrations. The unique dental fluorosis char- The fabricated crowns were seated intra-orally

acteristics were not done in the laboratory and and the contacts and occlusion with adjacent
were planned clinically. Thus the finishing glaze and opposing teeth were checked. Once satis-
of the crowns did not include the labial surface fied, the crowns were removed from the tooth
to allow further characteristics to be done chair- preparations. Direct staining methods started
side. with the extra-oral application of a porcelain-
etching agent (hydrofluoric acid 7-9%) on the

labial surface of the crown for 10 to 15 seconds.

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