Why do they not heal back like a bone or soft tissue? We just have one pair and that’s it…
In: Biology
In adult teeth, outermost layer of enamel is unable to replenish, as the cells that form enamel undergo programmed cell death after the tooth erupts into the open. The layer underneath enamel, dentin, is able to be replenished by a different type of cell than what makes enamel.
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