NHS dentist to think this isn't good enough?

[TiredMamOfTwo]

My ds7 is type one diabetic so obviously needs to be able to eat to keep his blood sugars at a healthy level & keep ketones away.
Yesterday he was at school and hurt his tooth, it wasn't till he got home (and dentist was shut) that I was made aware. He tried dinner and started screaming in pain.
As a result he's not eaten since yesterday lunchtime and I've had to stop his sugars going low with milkshakes as he's refusing to eat.

I ring the dentist the minute they open and they've told me they have no emergency appointments as the dentist has blocked off the appointments (and was the first one in the Qeue!) even though I've explained he's a diabetic and if there's an infection brewing it could put him in hospital if he's not treated straight away.
They're now saying to ring again tomorrow, he's had the day off school as he's in to much pain to go. He's refusing pain killers too.

AIBU to think this is bloody outrageous and that dentists should see children (specially medical complex children) the same day like GP surgeries do?
I've also tried 111 who are saying to keep trying with his dentist as there's not much they can do for him. 🙄🤬

People can be irrational when in pain. When I was in hospital with what turned out to be an ovarian torsion I had to be talked into accepting morphine for the pain - and I was definitely in a lot of pain, even after the IV paracetamol.

A diabetic with rising ketones is an emergency. It will kill them in a matter of days if left untreated.
Please educate yourself on diabetes type one.

I'm not overly surprised that the dentist's receptionist doesn't know this though. Which is why it's taken a call from an HCP to sort out. It sounds like once they've fully understood, they've made an exception.

Obviously this is an unusual situation, but once the immediate issue is dealt with, I wonder if it's possible to discuss having some sort of note on his record at the dentist, saying that he's a priority if he develops a dental issue that prevents eating? I doubt that it will guarantee an appointment but might make the process it a bit simpler if they have that info confirmed?