Receding gums and decay under crown

[Diane97]

Hello, I have noticed my gums receded about 1 inch from my crown and their is noticeable decay under the crown. How would a dentist go about fixing this?

 

[MattKW]

I can't tell if that is active decay or arrested decay with staining. It also might be root discolouration if that tooth has had a root canal therapy. If it is decay, thensometimes a simple filling is all that is needed. Go get it checked, with an Xray too.