Veneers can only be installed on the front teeth, and this is a popular option to improve the appearance of teeth and give them a brighter and more attractive aesthetic appearance.

Veneers are usually installed on the front teeth to cover problems that affect the appearance of the front teeth, such as:

1. Tooth discoloration: Teeth can become discolored due to smoking or regular consumption of coffee or tea, and veneers are usually used to cover discoloration and improve the color of the teeth.

2. Spaces between teeth: A space can occur between the front teeth due to mismatched tooth size or due to missing teeth, and veneers can be used to cover these spaces and achieve a more attractive and proportionate appearance.

3. Dental deformities: These can include deformities of the front teeth, such as deviation, curvature, and cracks, and veneers can be used to improve the appearance of the teeth and cover deformities.

4. Worn teeth: Excessive wear on the teeth can lead to a change in their shape and size, and veneers can be used to correct this problem and improve the appearance of the teeth.

A dentist should be consulted to determine whether cosmetic veneers can be placed on the front teeth only according to the patient's condition and desired cosmetic goals.