Related Experiment Video
Updated: Sep 23, 2025

Author Spotlight: Enhancing Microinjection Needle Quality by Wet Beveling
Published on: September 27, 2024
Jet injection needle-free dental anaesthesia: Initial findings
Paul A Brunton1, Mitten McLean2, Senthilkumar Vedagiri2
1Division of Health Sciences, University of Otago, Dunedin 9054, New Zealand.
A new needle-free injection device for dental anesthesia was preferred by patients and reduced discomfort compared to traditional methods. While effective in 75% of cases, further trials are needed for broader application.
Area of Science:
- Dental Anesthesiology
- Minimally Invasive Procedures
Background:
- Dental anxiety and needle phobia are significant barriers to treatment.
- Conventional local anesthesia injections can cause patient discomfort and anxiety.
Purpose of the Study:
- To evaluate patient preference for a novel needle-free local anesthetic device versus conventional methods.
- To assess anxiety and discomfort levels associated with the needle-free device.
- To examine the efficacy and tissue healing following needle-free anesthesia for dental extractions.
Main Methods:
- A proof-of-principle study involving eight participants undergoing bilateral maxillary extractions.
- Randomized placement of needle-free and conventional anesthesia.
- Blinded assessment of extractions by a second operator.
Main Results:
- Most participants preferred the needle-free technique, reporting lower discomfort scores.
- Successful anesthesia was achieved in 75% of participants using the needle-free device.
- Normal healing of extraction sockets and surrounding tissues was observed for all participants.
Conclusions:
- The needle-free local anesthetic device shows promise for dental extractions, particularly for anxious patients.
- Further clinical trials are warranted to validate its efficacy and explore applications in restorative dentistry.
Related Concept Videos
Local Anesthetics: Clinical Application as Surface, Infiltration, and Conduction Block Anesthesia
Local Anesthetics: Clinical Application as Intravenous Regional Anesthesia
One of the advantages of...
Local Anesthetics: Common Agents and Their Applications
Cocaine is an ester of benzoic acid and methylecgogine. It is used to anesthetize and vasoconstrict locally. Currently, it is used primarily for topical applications. It is beneficial for surgeries on the upper respiratory tract, providing anesthesia and shrinking the mucosa. Cocaine in the form of cocaine hydrochloride is...
Local Anesthetics: Clinical Application as Epidural Anesthesia
Since epidural anesthetics can be infused through an epidural catheter, all types of drugs, including short-acting ones, can be administered. Chloroprocaine and lidocaine are examples of short and long-duration anesthetics, respectively. Bupivacaine...
Parenteral Anesthetics: Overview
Local Anesthetics: Clinical Application as Spinal Anesthesia

