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.
There is also a bus that runs to Playa del Carmen from Cancun. The other great way to get to Cozumel is via a Cozumel Tour. You can do an on-your own tour of Cozumel for only the cost of the transportation-just $46.00 per person-it's a great deal. If you're going over for the day, see Cozumel Tours.