Cheek piercing is facial body piercing thru the cheek. A piercing that travels along the skin of the face and does not penetrate into the oral cavity would be a surface piercing, such as an anti eyebrow. They are often placed in symmetrical pairs and often in the dimples of the cheek, if the bearer has dimples to pierce. It is an uncommon piercing.

Health Issues
Healing times and issues for cheek piercings are similar to those for lip piercings or other piercings which penetrate from the outside of the body into the oral cavity. During the healing process both the exterior and interior of the mouth must be cared for. Proper jewelry is important to prevent gum erosion and damage to the teeth.

Jewelry
Cheek piericings are normally pierced with flat backed labret studs, a type of barbell jewelry. The flat back provides both comfort and lessens the chance of the jewelry damaging the teeth and gums of the bearer. The external end of the labret stud can be decorative in nature. Initial jewelry may be long, to allow for any swelling caused by the piercing. Proper length of jewelry in a healed piercing is important to protect the teeth and gums.

History and Culture
Permanent cheek piercing appears to be of primarily contemporary origin.

Ritual cheek piercings were and are common throughout the world in both primitive and modern cultures. Perhaps the most well known of these rituals is the annual vegetarian festivals in Phuket, Thailand where “mediums” (both lay people and monks) pierce their cheeks with a bewildering array of objects in varying sizes, while in an altered state.

source:wikipedia.org