Abnormal tooth color is not the same as the darkening or yellowing of teeth that occurs as people grow older or expose their teeth to staining substances, such as coffee, tea, and cigarette smoke. Graying of a tooth may be a symptom of a previous infection within the tooth that has seriously damaged the pulp, which is the living center of the tooth.
Isla Cozumel, Mexico's largest island is located in the western Caribbean, 12 miles off the coastline of the Yucatan Peninsula, about 45 miles south of Cancun.
COZUMEL FERRY INFORMATION. The primary gateway between Cozumel and the mainland of the Yucatan Peninsula, including Cancun and the Riviera Maya, is the passenger ferry from Playa del Carmen. Thousands of tourists and locals every day take the 45 minute ride to or from Cozumel. It's very easy, and runs nearly every hour.