Veneers are one of the best advances in cosmetic dentistry. They are made at the lab from a thin layer of porcelain. They are then cemented directly over a slightly prepped tooth. They are best performed over a healthy, non-chewing surface or front tooth. They can cover stains, close spaces, cover chipped teeth and change the color of the teeth. They are very natural looking and resilient to wear. They will not discolor. If you are looking for very white teeth, porcelain veneers are the ultimate. The dental veneers procedure usually take 2 office visits.

FIRST VISIT-VENEERS

On the 1st visit, a small amount of tooth is reduced from the front (facial) to compensate for the thickness of the veneer. An impression is then taken of the patients prepped teeth and sent to the dental lab for custom fabrication. You are then fitted with a temporary facing for approximately 2 weeks.

SECOND VISIT-VENEERS

To cement the completed veneer, the dentist carefully prepares the tooth with acid gel, which creates small pores on the surface of the tooth. When the new veneer is pressed against the prepared tooth, the pores interlock and create a very strong bond. Because they are porcelain, the possibility of fractures are present, but rare. The veneers should last a lifetime with proper care. Ask if there is any guarantees against fracturing.

Below outlined is the detailed and step by step dental veneers procedure aesthetic try-in.

With a veneer set-up an aesthetic try-in needs to be performed on the patient. The objective is the verification of:

Shape, color and position

Lip volume

Occusal plane, provided that posterior teeth are involved

Movement function (dynamics)

Centric bite and

Speech

1. Abutments

A silicone precast is created from the set-up and a proper abutment is chosen. On top of the abutments primary telescope crowns and galvanically produced secondary parts are constructed along with a gingival mask for the verification of the gingival margin

2. Tertiary framework

The tertiary framework was produced with the model casting method. With the casted and finished tertiary structure, the optical verification with the veneers in the precast takes place. A transfer key for the abutments is mandatory as the absence of the rotation lock requires it in the dental veneers procedure.

3. Try-in and travel prosthesis

In the next step of the dental veneers procedure the abutments are placed and definitively screwed in with the transfer key. Non-rotation locked abutments can only be placed once and have to fit perfectly in the secondary construction in the mouth in other words: on the first try. The primary crowns are bonded to the abutments and the secondary crowns are placed on top followed by a try-in of the tertiary structure and tension-free cementing. Another impression over the tertiary structure is necessary because we have to produce a new model to finalize the work. The travel prosthesis is integrated and lined with a non-hardening material.

After the model is produced the same tooth shape of the veneers is placed on the tertiary structure without the patient requests changes. These are the advantages of travel prosthesis: the abutments and primary crowns are placed in the mouth quickly; the patient can leave with her first prosthesis. The patient is able to test the prosthesis in her daily life: is the speech as it was during the try-in? Is the aesthetic effect to her liking, how is the reaction of her social environment … all that without pressure and stress.

4. Finishing

The veneers are set-up in front of the tertiary framework and are ready to be cemented. The tertiary framework is blasted with AL2O3 110 μm and conditioned with metal primer, followed by the application and curing of the light cured opaquer. The with AL2O3 110 μm blasted veneers are conditioned with the primer viso.link and light cured.

The cementing of the veneers is done with combo.lign, the dual-hardening adhesive composite, which matches any selected dentine color.

The finishing of the veneering from the palatal region and the designing of the inter-dental areas is carried out with crea.lign. These composites can be used for the characterization of the veneer in the selected dentine and incisal shades.



Source by Thomas M Johanson

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