A tooth is basically made up of two parts: the crown and the root. The crown is what you see when you smile or open your mouth. It's the part that sits above your gumline. The root is below the gumline. It makes up about 2/3rds of the tooth's total length. Four different tissues make up each tooth. More... |
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There are four different types of teeth in the mouth of an adult human. The complete dentition of an adult person has 32 teeth. The adult human teeth show a morphology mainly differentiated by the shape of their upper surface (crown) and the number of the tooth roots. Individual tooth morphology is associated with the purpose of each tooth type (cutting, shredding or grinding the food). More... |
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Although tooth eruption occurs at different times for different people, a general eruption timeline exists. Typically, humans have 20 primary teeth and 32 permanent teeth. More... |
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