Yes, you have to add custom token.....

You will need to input the Dentacoin "contract" address, decimal places, and the ticker.... Information can be found here : Etherscan/Dentacoin

Always test it out first by sending the minimum to your wallet address after you set it up..... Just to be on the safe side.... If you're transferring from an exchange, that kinda sucks, but if you wanna roll the dice, that's on you.