giugno 27, 2017 9:00 am

What materials are used in cosmetic dentistry?

The natural teeth whitening procedures include the use of chemicals such as hydrogen peroxide and carbamide, which, applied to specific concentrations on the surface of the teeth release oxygen disintegrating pigmentations.
An excessively long and accidental exposure time with the gum can lead temporary complications such as increased sensitivity or superficial burns of the gingiva that is still resolved within a few days.

What materials are used in aesthetic dentistry?

One of the key elements that have contributed to the evolution of the reconstructive dental therapy is the introduction of new metal-free ceramic materials characterized by a high level of aesthetics and biocompatibility.
These materials are mainly represented by zirconia and lithium silicate.
The zirconia presents a very high resistance level and is particularly suitable for the production of bridges on both teeth on implants. Among the advantages of this material are the absence of gray typical of traditional metal-ceramic restorations and high biocompatibility, thanks also to the limited bacterial adhesion to the surface.
The total or partial restoration of a single tooth located instead ideal indication in the use of lithium disilicate, a reinforced glass ceramic which combines a good mechanical resistance to a very good level of aesthetics. The main advantage of this material is the ability to create a restoration that can be “glued” to the remaining structure of the damaged tooth restoring its normal anatomy. In this way the dentist-dental technician team can re-create the form and aesthetics of the dental elements in extremely conservative manner avoiding, in many cases, to further polish the tooth to be able to occupy, as was done with the traditional metal-ceramic crowns.
Since this is a the glass-ceramic material is inert, does not create allergies, it presents a limited surface to bacterial adhesion and is therefore very biocompatible.
The lithium disilicate can be worked with both traditional pressing methods, starting from a wax model, it is, with the CAD-CAM techniques innovative (Computer Aided Design-Computer Aided Manufacturing), and can be used to restore full thickness (monolithic ) or as a supporting structure for the ceramic laminated or partially laminated restorations, favoring in the first case the robustness, in the second case the yield aesthetic.

It ‘important that the management of new ceramic materials is entrusted to competent professionals to ensure the long term success of the reconstructions. Both the dentist and the dental technician must thoroughly know how they are processed in the laboratory and application of patient’s mouth in order to achieve an aesthetic work and durable.

Regarding the lithium disilicate are of extreme importance for the duration in time:

– The correct execution of the procedures of “filing” of the tooth, with the respect of the minimum and maximum thicknesses (essential for this purpose the study of the case by a waxing and a correct temporary restoration, especially in the esthetic zone).

– The choice of the cementation material and the strict respect of procedures, in fact one of the disilicate strengths is the ability to be “glued”, and since the adhesive procedures are extremely delicate and sensitive non-compliance with the instructions and rules could lead to premature failure, particularly in case of partial restorations.

In conclusion we can state that the lithium disilicate is a material that combines aesthetic characteristics and resistance that make it usable in cosmetic dentistry not only in the anterior region but also in the posterior lateral areas of the mouth. It ‘a material that allows, adhesively cemented, to optimize the function and aesthetics even in very thin layers with a considerable saving of tooth structure thanks to very conservative preparations.

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