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.
1 Beaches: Cozumel has some great beaches to choose from in and around the city of San Miguel de Cozumel. 2  While not the most beautiful beaches in the Caribbean, they are plentiful and make great options for beach days. 3  Most of the well-known beaches are within 10-15 minutes of where Royal Caribbean docks via taxi. Most excursions, both from Royal Caribbean or via third party, are within a 15 minute taxi ride of the dock, with a few excursions across the Yucatan Channel in nearby Playa del Carmen. 2  Favorite excursion: Tulum Mayan Ruins Excursion. 3  Diving: Cozumel is well known around the world for its scuba diving and snorkeling.