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Anesthetic Efficacy of Articaine and Lidocaine in Lower Molars With Irreversible Pulpits

Information source: University of Campinas, Brazil
ClinicalTrials.gov processed this data on August 23, 2015
Link to the current ClinicalTrials.gov record.

Condition(s) targeted: Irreversible Pulpitis; Pain

Intervention: 4% articaine with 1:100,000 epinephrine (Drug); 2% lidocaine with 1:100,000 epinephrine (Drug)

Phase: Phase 4

Status: Completed

Sponsored by: University of Campinas, Brazil

Official(s) and/or principal investigator(s):
José FA Almeida, DDS, PhD, Study Chair, Affiliation: Endodontics Area - FOP-UNICAMP
Maria RF Monteiro, DDS, MSc, Principal Investigator, Affiliation: Endodontics Area - FOP-UNICAMP


The aim of this study was to verify the effectiveness of an anesthetic called articaine for dental treatment, comparing it with an anesthetic commonly used in dental clinic: lidocaine. Two types of local anesthesia (oral injection) in accordance with the solution used were performed. For patients anesthetized with articaine, an injection of anesthesia close to the tooth to be treated was used. For the anesthetic lidocaine an injection on the cheek at the bottom of the mouth was made. Differences between both techniques are mainly regarding the area of numbness. In the injection with articaine only a small part of the lip and the tooth was anesthetized. With lidocaine injection, the lower region of the entire side of the tooth and half of the tongue on the same side was numbed. The treatment was electronic randomized and there was equal chance to one or another treatment. The investigators are studying this new form of anesthesia (near the tooth that was treated) to see if it can numb the tooth to an emergency treatment, if it really decreases the feeling of numbness and discomfort during the service. Patients receiving articaine were submitted to cone beam exam at no cost.

Clinical Details

Official title: Anesthetic Efficacy of 4% Articaine (Mandibular Infiltration) and 2% Lidocaine (Alveolar Nerve Block), Associated With 1:100.000 Epinephrine, in Lower Molars With Irreversible Pulpits

Study design: Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Primary outcome: Pain perception 3

Secondary outcome:

Buccal cortical bone thickness

Root distance to the bone

Basal pain perception

Pain perception 2

Detailed description: Aim: This randomized clinical trial compared the anesthetic efficacy of buccal infiltration (BI) with 4% articaine (AR) and inferior alveolar nerve block (IANB) with 2% lidocaine (LI), both with 1: 100,000 epinephrine, in symptomatic mandibular molars with irreversible pulpitis. Likewise, we compared the efficacy of the primary infiltration (BI or IANB) with one supplemental injection (intraligamentary infiltration with articaine for AR and BI with articaine for LI). The influences of buccal cortical bone thickness and root distances to buccal cortical bone on articaine performance (AR) were also evaluated using cone-beam tomography. methodology: Volunteers presenting symptomatic mandibular molars with irreversible pulpitis were randomly divided into two groups (30 for AR and 20 for LI). Success was recorded when complete pain-free treatment was achieved after primary injection or when one supplemental injection was needed for emergency endodontic procedures.


Minimum age: 18 Years. Maximum age: N/A. Gender(s): Both.


Inclusion Criteria:

- long-lasting moderate to severe pain during cold test

- absence of periapical radiolucency except for a widened periodontal ligament

(evaluated in periapical radiographs)

- vital coronal pulp on access opening

Exclusion Criteria:

- Previous history of allergy to local anesthetics

- Subjects with systemic diseases

- Pregnancy and lactation

- Subjects taking any kind of medication that could change or influence the outcome of

this research

- Subjects without painful symptoms

- Negative thermal testing, periapical lesion, incomplete root formation, presence of

fistula or abscess, cracks or fractures

Locations and Contacts

Piracicaba Dental School - UNICAMP, Piracicaba, SP 13414-903, Brazil
Additional Information

Related publications:

Aggarwal V, Jain A, Kabi D. Anesthetic efficacy of supplemental buccal and lingual infiltrations of articaine and lidocaine after an inferior alveolar nerve block in patients with irreversible pulpitis. J Endod. 2009 Jul;35(7):925-9. doi: 10.1016/j.joen.2009.04.012.

Ashraf H, Kazem M, Dianat O, Noghrehkar F. Efficacy of articaine versus lidocaine in block and infiltration anesthesia administered in teeth with irreversible pulpitis: a prospective, randomized, double-blind study. J Endod. 2013 Jan;39(1):6-10. doi: 10.1016/j.joen.2012.10.012. Epub 2012 Nov 13.

Berlin J, Nusstein J, Reader A, Beck M, Weaver J. Efficacy of articaine and lidocaine in a primary intraligamentary injection administered with a computer-controlled local anesthetic delivery system. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2005 Mar;99(3):361-6.

Starting date: February 2010
Last updated: July 29, 2013

Page last updated: August 23, 2015

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