The patient consulted to improve her smile. She had a severe post-endodontic dyschromia on tooth 11, which had been slightly masked with composite a few years earlier.
As this solution no longer suited the patient aesthetically, she came asking for an aesthetic treatment, durable in the long term. Thus the realization of a ceramic veneer on this tooth 11 was proposed to her.
The OptiShade dental colorimeter (Smileline, Switzerland) was used to optimize the result and to limit the number of try-ins.
Fig.1
Two impressions were sent to the laboratory (DT Lionel Marslen) in order to obtain a wax-up to improve the shape of the provisional which was fabricated using a silicone key.
Fig.2
During the preparation session, a color assessment was made using the OptiShade connected to my smartphone. The OptiShade colorimeter is easy to use and makes color information extremely easy to share! This device makes it possible to communicate the shade measured in L*a*b* coordinates, universal values in the world of colorimetry.
Fig.3
The thickness of the preparation is validated using buccal and occlusal preparation keys.
Fig.4
The impression was taken using a two-paste silicone technique with a retraction cord before re-measuring color values using the OptiShade.
Fig.5
In the laboratory, the L*a*b* coordinates are exported to the Matisse® software.
Fig.6
This software calculates the recipes and mixtures of ceramic powders necessary to recreate the closest color match, allowing for optimum results and a very limited number of try-ins.
Fig.7
In order to test the result in the laboratory, a model was fabricated using specifically the detected color of the substrate.
Fig.8
Once color was validated, shape and surface condition were refined.
Fig.9
Mechanical polishing makes it possible to bring out all the details of the stratification.
Fig.10
The veneer was tried-in using a dedicated paste. Adaptation was checked and the patient validated the aesthetic aspect at the first fitting. The veneer was then bonded with warmed restorative composite UDI Hri (Micerium).
Fig.11
Intraoral result 7-day follow-up.
Fig.12
Intraoral result at 7-day follow-up. Polarized picture.
Fig.13
Final smile situation.
Fig.14
Final face situation.
Conclusions
It’s very interesting and convenient to use a dental colorimeter (OptiShade) in single-incisor restoration situations to optimize the result and limits the number of try-ins!
Bibliography
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3. Edelhoff D, Prandtner O, Saeidi Pour R, Liebermann A, Stimmelmayr M, Güth JF. Anterior restorations: The performance of ceramic veneers.Quintessence Int. 2018;49(2):89-101.
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