They are restorative dental technic, of very thin shells produced in the laboratory and cemented to the anterior teeth that did not undergo root canal treatment. A few decades ago, thanks to improvements in the materials and techniques of the laboratory, a very conservative aesthetic solution has emerged, which offers a solution to a number of different situations in the area of smile, with an excellent aesthetic result and without changes over many years. 
Advantage:can be made on living teeth (without root canal treatment), color, size, shape, abrasion, closure of interdental spaces can be corrected. minimum removal of dental material approximately 0.5 mm on the front face of the tooth and not as on the crown that all surfaces of the tooth are shaped. The aesthetic is excellent without changes for years, and without stain, in the smile line area of the anterior teeth, does not cause damage to the gums and prevents their retraction.
Disadvantages: Very high cost at least 50% more than a crown. Requires 4-6-8 teeth to be performed at the same time
, a delicate and complex application technique that requires great skill both for the dentist and for the laboratory technician. Use of expensive and unique adhesives for this purpose only.
work process
1) shape the anterior part of the teeth under anesthesia, taken impression and sent to the laboratory, placement of temporary veneers.
2) After receiving and measuring the veneers these are cemented
Different types of veneers
Porcelain veneers: most commonly used more than 95%. Its effectiveness has been demonstrated for decades. The article above refers to these veneers.
Lumineers: A few years ago, appeared a derivative of the old technique of porcelain veneers called Lumineers that proposed veneers of a thickness of 0.2 mm without the need of shaping the dental tissue that was developed in the USA
Advantage: Excellent aesthetic result with minimal or no shaping of dental material. No need to anesthetize. The thickness of the shell is approximately 0.2 mm. A simple technique for application in the clinic
Disadvantages: cost up to three times more than a crown or twice to porcelain veneers. Need to send impressions to the US to carry out the work in the world’s only laboratory because of this the costs are similar to those of the United States. It requires unique adhesives from the same company. It requires the inclusion of all teeth and not just those of the smile line. Complex adhesive technique, need for an intermediary agent in the country of origin that needs to send the work to USA. Dentists trained to perform it are only those who participated in the course of the company which is very expensive therefore it has not spread unlike as porcelain veneers. Due to the system without shaping of dental material the aesthetic result is not always suitable for all cases.
