Sometimes your dentist needs to numb part of your mouth. He or she injects a loc

Question

Sometimes your dentist needs to numb part of your mouth. He or she injects a local anesthetic into your gum or inner check. Licocaine is the most common local anesthetic that dentists use. You are working with a dentist to design a self dispensing syringe to inject lidocaine in the gums of patients through a 31-gauge needle. The device needs to deliver 0.93 mL/min for 30 seconds.
- To achieve this flow rate through the needle, what pressure differential does the device need to supply to achieve this flow.
- If the pressure in the gum is 1 atm what is the pressure within the device needed.
- If the needle is 1 inch long, determine what impact the angle of the injection has on the needed pressure differential.

Explanation / Answer

Sometimes your dentist needs to numb part of your mouth. He or she injects a loc

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