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COMT, MAOA, and SLC6A4 Polymorphisms and Inferior Alveolar Nerve Block Success

5. juli 2026 opdateret af: Marmara University

The Relationship Between COMT, MAOA, and SLC6A4 Polymorphisms and the Success of Inferior Alveolar Nerve Block

The purpose of this study was to evaluate the association between COMT, MAOA, and SLC6A4 genetic polymorphisms and the success of inferior alveolar nerve block (IANB) in patients with symptomatic irreversible pulpitis in mandibular molars. Patients presenting with moderate to severe pain were enrolled. Before anesthesia, pain intensity was assessed using the Heft-Parker Visual Analog Scale (HP-VAS), and pulpal vitality was evaluated using cold and electric pulp tests. All participants received a standardized inferior alveolar nerve block with 4% articaine containing epinephrine. Fifteen minutes after injection, pulpal anesthesia was reassessed using cold and electric pulp tests. Patients who continued to respond to these tests were considered to have unsuccessful pulpal anesthesia and were excluded from the study. Patients with no response to either test were included in the study, and root canal treatment was initiated. Pain experienced during the procedure was assessed using the HP-VAS. Buccal swab samples were collected for genomic DNA isolation, and COMT, MAOA, and SLC6A4 polymorphisms were analyzed using a Real-Time PCR-based TaqMan genotyping assay. The association between genetic polymorphisms and the success of inferior alveolar nerve block was statistically evaluated.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

95

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Tyrkiet (Türkiye)
    • Istanbul
      • Istanbul, Istanbul, Tyrkiet (Türkiye), 34854
        • Faculty of Dentistry, Marmara University

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Barn
  • Voksen

Tager imod sunde frivillige

Ja

Beskrivelse

Inclusion Criteria:

Age between 15 and 60 years. American Society of Anesthesiologists (ASA) Physical Status I. Positive response to both the cold test and electric pulp test before treatment.

Presence of pulpal bleeding upon access cavity preparation, confirming pulp vitality.

Periodontal probing depth ≤3 mm. Sufficient coronal tooth structure to allow rubber dam isolation. No use of nonsteroidal anti-inflammatory drugs (NSAIDs) within 12 hours before enrollment.

No known allergy or hypersensitivity to articaine. No history of systemic or genetic diseases. Ability and willingness to provide written informed consent

Exclusion Criteria:

Use of nonsteroidal anti-inflammatory drugs (NSAIDs) within 12 hours before enrollment.

Known allergy or hypersensitivity to articaine. Presence of any systemic or genetic disease. Teeth with previous endodontic treatment. Teeth with extensive coronal destruction preventing rubber dam isolation. Presence of internal or external root resorption.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Grundvidenskab
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Standard Inferior Alveolar Nerve Block
Procedure: Inferior Alveolar Nerve Block with 4% Articaine
A standardized inferior alveolar nerve block was administered using 4% articaine with epinephrine to patients with symptomatic irreversible pulpitis in mandibular molars. Fifteen minutes after injection, pulpal anesthesia was evaluated using cold and electric pulp tests. Participants who continued to respond to either test were considered to have unsuccessful pulpal anesthesia and were excluded from the study. Root canal treatment was initiated in participants who showed no response to both tests. Pain experienced during treatment was assessed using the Heft-Parker Visual Analog Scale (HP-VAS). Anesthetic success was defined as an HP-VAS score of less than 54 mm, whereas an HP-VAS score of 54 mm or greater was considered anesthetic failure.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Success of Inferior Alveolar Nerve Block Anesthesia
Tidsramme: During root canal treatment.
Anesthetic success was defined as an HP-VAS score of less than 54 mm during access cavity preparation and root canal treatment in patients with symptomatic irreversible pulpitis. An HP-VAS score of 54 mm or greater was considered anesthetic failure.
During root canal treatment.

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Marmara University

Efterforskere

  • Ledende efterforsker: Nevin kartal, Prof.Dr, Marmara University Faculty of Dentistry

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

12. november 2025

Primær færdiggørelse (Faktiske)

2. april 2026

Studieafslutning (Faktiske)

28. april 2026

Datoer for studieregistrering

Først indsendt

5. juli 2026

Først indsendt, der opfyldte QC-kriterier

5. juli 2026

Først opslået (Faktiske)

13. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

13. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

5. juli 2026

Sidst verificeret

1. juli 2026

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 25.09.2025/2025-66

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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Kliniske forsøg med Symptomatisk irreversibel Pulpitis (SIP)

Kliniske forsøg med Inferior Alveolar Nerve Block with 4% Articaine

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Betingelser

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Placeringer

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