Pain in left tooth after drinking?

[A195x]

Hi,
Noticed a odd pain sensation which has came on after drinking water, unsure if it will be sore drinking or things and food but assuming. What could cause this pain? Not a nice sensation and feeling it now not even drinking, what are the dark things? and is tongue looking ok?
Also in Scotland will dentists be returning to full services in November or not happening? Sorry for questions!

 

[honestdoc]

It seems that you have a lot of wear on the tops of your lower teeth. Cold sensitivity is very common. Without x-rays, I can't tell if you have cavities in between your teeth. Get it checked for any problems. Normal teeth can get sensitive to colds and it indicates that too much cold can damage the nerve of your teeth (root canal). Also consider a bite guard either Over-the-Counter store bought (cheaper) or custom made one to manage your grinding and clenching which can make your teeth very sensitive and causing damage.