How long does it take for the taste sensation to fully recover?

It all depends on the reason for the loss of taste. We may not taste it due to some factors. This can be a burn of the oral cavity, when the receptors are simply destroyed. Then it takes 3-5 days to restore the receptors. This is quite fast, since the tongue has the best regeneration in our body. Taste senses can be lost due to a common cold, since we taste not only with the help of receptors on the tongue, but also with the help of receptors on the nasal mucosa. Then the taste will recover after the treatment of the common cold.