Veneers are thin, custom-made shells crafted of tooth-coloured materials designed to cover the front side of teeth to improve the overall appearance of teeth.

Veneers are thin, custom-made shells crafted of tooth-coloured materials designed to cover the front side of teeth to improve the overall appearance of teeth. 
They are made of either thin plastic resin or porcelain and can be placed to:

correct poorly formed or mildly mal-positioned teeth
close gaps between teeth
mask internal stains
restore partially broken-down teeth
Tooth preparation is minimal and confined to the enamel structure. The veneer is bonded to the tooth structure with  tooth-coloured resin cement. Several visits are necessary to complete treatment.
Patients should be aware that this is usually an irreversible process because it’s necessary to remove a small amount of enamel from your teeth to accommodate the shell.

Dental veneers have long been used to create the ultimate smile makeover. With this treatment, it’s possible to transform crooked, stained, damaged or badly worn teeth into a brand new, straight, white smile, as seen on many of the Hollywood greats.

Veneers come in porcelain, ceramic or composite bonding substance, are coloured like teeth and are as thin as a shell. They are “cemented” to the front surface of teeth to improve their cosmetic appearance. Many dentists use the analogy that dental veneers are for your teeth what false fingernails are for your hands.

There are a wide variety of reasons why patients opt for treatment with dental veneers:

Stained teeth Badly stained teeth that cannot be improved by teeth whitening treatments can be greatly improved by dental veneers, which function to cover any existing stains on your teeth.
Damaged teeth Teeth that have become badly worn through excessive grinding or by carbonated drinks, as well as those that have been chipped or broken, can benefit from veneers. A small chip on a tooth can quickly be repaired with composite bonding, also knows as “composite veneers”. A single damaged tooth can easily be repaired with a porcelain veneer that has the same characteristics and colour as you natural teeth.
Gaps Spaces or gaps (diastimas) between your teeth can easily be closed using dental veneers, giving you a more uniform-looking smile.

Crooked teeth Veneers are not the ideal treatment for crooked teeth, and from the point of view of preserving your natural teeth structure, orthodontics would probably a better solution. However, such treatments can take up to a year or longer. For teeth that are not severely crooked, veneers placed over their front surface will give a straight and perfectly aligned-looking smile. For this type of treatment, many people refer to veneers as “instant orthodontics”, as you get a similar end result in a fraction of the time.