you should visit a dentist near you get yourself evaluated by getting x-ray's done , if it's getting discolored then you have to get RCT done followed by capping.

Teeth become non vital due to trauma and become discolored over a period of time.Better option of the treatment will be root canal treatment of the discolored teeth followed by an all ceramic crown(zirconia ). Before the treatment some x rays will be required to evaluate the cause of the discoloration of the teeth.

hello, you need to visit a dentist and get it checked. if the discolouration is due to cavity, you need to get it filled. but if it is due to the filling material used i.e composite, you need to get it replaced.

Hi Sir , pls get X-ray done for the teeth which is discoloured, trauma might be a reason for ur tooth loss , this tooth might be involved then which is not noticed , so consult the Dentist he will examine the reason for tooth discolouration, suggest you proper treatment , zirconia is good choice of crowns, thank you , Dr.Venkat VDENTIS DENTAL CARE , Hyderabad

Crowns and bridges can be replaced ..u can opt for zirconia crowns for best esthetics

Hello, you need to get an x-ray done to check if there is proximal caries in the adjacent teeth.The discolouration could be due to the decay. Regards Dr Sumanmakam