Result optimization for central incisor single veneer with OptiShade

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.

style italiano styleitaliano intraoral picture showing dyschromic tooth

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.

style italiano styleitaliano OptiShade colorimeter color detection

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.

banner optishade colorimeter app style italiano styleitaliano
banner optishade colorimeter app style italiano styleitaliano
style italiano styleitaliano index for preparation thickness

Fig.3
The thickness of the preparation is validated using buccal and occlusal preparation keys.

style italiano styleitaliano silicone precision impression

Fig.4
The impression was taken using a two-paste silicone technique with a retraction cord before re-measuring color values using the OptiShade.

style italiano styleitaliano matisse software screenshot

Fig.5
In the laboratory, the L*a*b* coordinates are exported to the Matisse® software.

style italiano styleitaliano matisse software screenshot with different color mix solutions

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.

style italiano styleitaliano veneer preparation

Fig.7
In order to test the result in the laboratory, a model was fabricated using specifically the detected color of the substrate.

style italiano styleitaliano veneer preparation

Fig.8
Once color was validated, shape and surface condition were refined.

style italiano styleitaliano ceramic veneer on model

Fig.9
Mechanical polishing makes it possible to bring out all the details of the stratification.

style italiano styleitaliano steps of veneer cementation

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).

style italiano styleitaliano cemented ceramic veneer

Fig.11
Intraoral result 7-day follow-up.

style italiano styleitaliano polarized picture of cemented veneer

Fig.12
Intraoral result at 7-day follow-up. Polarized picture.

style italiano styleitaliano smile with single incisor veneer

Fig.13
Final smile situation.

style italiano styleitaliano smile with single incisor veneer restoration

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

1. Clary JA, Ontiveros JC, Cron SG, Paravina RD. Influence of light source, polarization, education, and training on shade matching quality. J Prosthet Dent. 2016 Jul;116(1):91-7.
2. Moussa C, Hardan L, Kassis C, Bourgi R, Devoto W, Jorquera G, Panda S, Abou Fadel R, Cuevas-Suárez CE, Lukomska-Szymanska M. Accuracy of Dental Photography: Professional vs. Smartphone’s Camera. Biomed Res Int. 2021 Dec 15;2021:3910291.
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.
4. Gurel G. The science and art of porcelain laminate veneer. Chicago: Quintessence publishing 2003

style italiano styleitaliano Essential Dentistry kit online on demand course
style italiano styleitaliano Essential Dentistry kit online on demand course

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