Each of the four hindmost molars in humans, which usually appear at about the age of twenty.
- A wisdom tooth has been reported facing the second molar, crown to crown.
- People who have problems such as infection, cysts or tumours, tooth decay, or gum disease around a wisdom tooth should think about having it removed.
- Gum disease can affect the first and second molars and the bone surrounding the tooth, as well as the impacted wisdom tooth.
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