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Gordon
Administrator
Staff member
Verified dentist
- Joined
- Oct 25, 2005
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- 6,745
Good for you.
Assuming you're a normal adult the dentist would need to repeat that feat around forty times.
Assuming you're a normal adult the dentist would need to repeat that feat around forty times.
A
Andybonse
Junior member
I read that 1 Carpule has 34mg of lidocaine in and toxic dose in my weight is 400mg, but isn’t that when it’s not injected straight into an artery?
A
Andybonse
Junior member
not allergic just read that it can be injected into a blood vessel and cause toxicity and death so made me so anxious? The Adrenalin I know is fine just makes your heart race but the lidocaine or articaine or whatever can cause toxicity and stop the heart and stuff so I panic!
Gordon
Administrator
Staff member
Verified dentist
- Joined
- Oct 25, 2005
- Messages
- 6,745
Like most phobias yours is totally without logic, it's what makes them such "fun" to have to deal with. Bit like my fish phobia 
It simply is not possible to inject sufficient local anaesthetic solution into a vein, simply impossible, the veins in the area where the injection goes are so small and delicate they would be utterly destroyed within the first 2 or 3 attempts.
Remember too, the murderous dentist would be aiming for a structure about 1mm in diameter which is 3cm buried inside the tissues and completely invisible.
Injecting into an artery with a dental needle is simply impossible, the arterial wall is far too thick and the fine dental needle won't penetrate it.
If the solution contains adrenaline then the toxic dose is higher, 5mg/kg roughly. Even at excess of this dose, death isn't likely.
It simply is not possible to inject sufficient local anaesthetic solution into a vein, simply impossible, the veins in the area where the injection goes are so small and delicate they would be utterly destroyed within the first 2 or 3 attempts.
Remember too, the murderous dentist would be aiming for a structure about 1mm in diameter which is 3cm buried inside the tissues and completely invisible.
Injecting into an artery with a dental needle is simply impossible, the arterial wall is far too thick and the fine dental needle won't penetrate it.
If the solution contains adrenaline then the toxic dose is higher, 5mg/kg roughly. Even at excess of this dose, death isn't likely.