Which term describes the event when a new tooth comes in?

Which term describes the event when a new tooth comes in?

• A. Eruption
• B. Exfoliate
• C. Decalcification
• D. Crown

Answer: (A)

The event when a tooth comes into the mouth is called eruption. It describes the tooth moving from its development inside the jawbone, through the bone and gums, into its functional position in occlusion. As this happens, root formation often continues, and the tooth becomes visible in the mouth. Exfoliate refers to shedding or losing a tooth, typically a primary one being replaced—it's not about the initial emergence. Decalcification is enamel mineral loss from acids, not the tooth’s arrival. The crown is simply the visible portion of the tooth above the gum line, not the process of eruption. So eruption is the best term for this event.

The event when a tooth comes into the mouth is called eruption. It describes the tooth moving from its development inside the jawbone, through the bone and gums, into its functional position in occlusion. As this happens, root formation often continues, and the tooth becomes visible in the mouth. Exfoliate refers to shedding or losing a tooth, typically a primary one being replaced—it's not about the initial emergence. Decalcification is enamel mineral loss from acids, not the tooth’s arrival. The crown is simply the visible portion of the tooth above the gum line, not the process of eruption. So eruption is the best term for this event.