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Related Experiment Videos

Effective topical anesthetic agents and techniques.

John G Meechan1

  • 1Department of Oral and Maxillofacial Surgery, Dental School, Framlington Place, Newcastle upon Tyne, NE2 4BW, United Kingdom. J.G.Meechan@ncl.ac.uk

Dental Clinics of North America
|November 20, 2002
PubMed
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Intraoral topical anesthesia effectiveness varies by agent, concentration, and application time. Lidocaine and benzocaine show efficacy, but palatal mucosa is resistant, and deep block injections are not improved.

Area of Science:

  • Dentistry
  • Pharmacology
  • Anesthesiology

Background:

  • Intraoral topical anesthesia is crucial for dental procedures.
  • Optimizing anesthetic efficacy requires understanding agent properties, application timing, and site-specific factors.

Purpose of the Study:

  • To evaluate the effectiveness of various intraoral topical anesthetic agents.
  • To determine the impact of application time and site on anesthetic efficacy.

Main Methods:

  • Review of studies on lidocaine, benzocaine, and lidocaine-prilocaine combinations.
  • Analysis of application times ranging from 1 to 5 minutes.
  • Comparison of anesthetic effects across different intraoral sites, including palatal mucosa.

Main Results:

Related Experiment Videos

  • Lidocaine (5-20%) and benzocaine (20%) are effective topical agents.
  • A 5-minute application in the buccal fold ensures effectiveness, while shorter times show variable results.
  • Palatal mucosa demonstrates higher resistance to topical anesthesia compared to other intraoral sites.

Conclusions:

  • Topical anesthetic efficacy depends on agent, concentration, application duration, and anatomical site.
  • Topical anesthetics are not effective for reducing discomfort during deep regional blocks like inferior alveolar nerve blocks.