At your initial visit, your dentist will evaluate the type and extent of the problem. They will often take X-rays of your face and teeth in order to further analyse the alignment or your teeth. Often, they will also ask to make impressions of your teeth using a soft material, in order to make an exact copy of your teeth to assist with treatment.
Usually, it is easy to tell if your teeth are stained, because you will notice the visible discoloration.
You may notice spaces between your teeth, or realize you have gaps while brushing or flossing. Also, your dentist or orthodontist will examine your mouth and be able to tell if you have or are developing a gap between your teeth. They may use X-rays to further understand and diagnose the structure of your teeth.
If you have lost a tooth, your dentist will want to see you immediately to try and re-implant your tooth if possible. If this is no longer possible, your dentist will examine your teeth and suggest another form of treatment.