Chairside - Glidewell Dental Labs

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Figure 6: Cord is placed prior to the preparation to accelerate the
procedure.
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Figure 7: Finished preparations. Note that tetracycline teeth usually
become darker when they are prepared. The bonded lingual retainer
obviously eliminates interproximal extensions.
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Figures 8, 9: Areas of preparations not to be masked with opaquer are covered with resin blockout material. Only dark stained areas need to be masked.
Resin blockout material keeps etchant and adhesive off stained areas.
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Figure 10: Opaquer has been applied to dark stained areas after
etching and adhesive application. Even though the preparations are
relatively aggressive, mandibular teeth cannot be reduced to the extent
possible for larger maxillary siblings. Therefore, the opaquer must be
kept quite thin.
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Figure 11: Resin blockout has been removed. Note that only darkstained
areas are covered by the opaquer.
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