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OpenTrials
Completed

NCT Number: NCT06874244

Clinical Evaluation of no Needle Dental Anesthesia Compared to Syringe Anesthesia Delivery

The purpose of the study is to evaluate two different ways to administer the numbing solution. One is with a conventional needle and syringe the other method iontophoresis is a machine that supplies a weak current through electrodes that touch your teeth. Both methods use an anesthesia solution to make your teeth numb but the iontophoresis system contains no needle and the delivery device does not penetrate the gum.

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Early Phase 1

Primary location

LSUHSC School of Dentistry

New Orleans, Louisiana, 70119, United States

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Subject is at least 18 years of age at the time of consent

Subject is able to provide their own informed consent

Subject has a minimum 24 teeth/subject and 6 teeth per quadrant

Subject has an Approximal Plaque Index score ≤ 40% as assessed via explorer and without the use of plaque-disclosing agents

Subject must be able to speak and understand English

Subject is able and willing to return for all scheduled study visits

Subject to able to make dental appointments

Subject should not be a pregnant female

Subject meets the Level-I or Level-II classification criteria of the American

Society of Anesthesiologists (ASA) Physical Status Classification System For Dental Patient Care

Exclusion criteria

  • Subject has any of the following:
  • rampant caries
  • chronic periodontitis
  • salivary gland dysfunction

Subject is unable, for any reason, to tolerate the procedure time required to place the restorations

Subject has unacceptable oral hygiene (e.g., chronic moderate to heavy plaque accumulation along the gumline)

Subject is planned to be enrolled in another investigational trial that requires additional interventions at any time during the study

Subject is using a whitening agent at any time during this study.

Subject has history of allergic reaction to anesthetic medications

Subject with uncontrolled systemic disease or conditions

Subject is having acute or chronic myofascial pain or neuropathic conditions

Subject taking long-term analgesics for their systemic conditions

Subject presenting with acute dental pain

Subject requiring IV sedation or nitrous oxide sedation or oral sedation for anxiety

Treatment and study plan

Local Anesthesia (lidocaine hydrochloride)

Drug

Injection of lidocaine as local anesthesia

Iontophoresis of Tetracaine and oxymetazoline

Drug

Injecting Tetracaine Hydrochloride 4% with 0.5% Oxymetazoline to the oral tissue using iontophoresis technique

Primary outcomes

  1. Pain response in the gingiva

    Time frame: Up to 1 hour

    Pain response in the gingiva will be recorded as a yes/no after a painful stimulus is applied using a probe on the buccal and palatal soft tissues.

  2. Cold pulp test

    Time frame: Up to 1 hour

    The pulpal response will be assessed using a cold pulp test as yes/ no response.

Secondary outcomes

  1. Pain scale: Visual analog scale

    Time frame: Baseline and 2 minutes after delivery of anesthesia.

  2. Beck's anxiety scale

    Time frame: Baseline and 2 minutes after delivery of anesthesia.

Sponsors and collaborators

Lead sponsor

Louisiana State University Health Sciences Center in New Orleans

Other

Collaborators

  • Henley Ion

Registry information

Official study title

Randomized Prospective Split Mouth Clinical Evaluation of no Needle Dental Anesthesia Compared to Syringe Anesthesia Delivery

Important dates

Study start
2024
Primary completion
2025
Study completion
2025
First posted
Mar 13, 2025
Registry last updated
Nov 19, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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